Wallis Cat 08 Pt1 Singles.

qxp 10/12/08 12:42 Page 12

EARTHING INTRODUCTION

A well designed earthing system is essential to ensure Earth Terminations &

protection of personnel and equipment from danger Networks
associated with fault currents.
An earth electrode should be
connected to each down
Earthing System Design
conductor of a lightning protection
Considerations
system (LPS). Earth rods need an
To achieve an efficient earthing earth inspection housing for
system it is essential that a low periodic testing of earth
electrical resistance to earth is resistance.
achieved, using good quality
Earth rods are used in most applications and are driven into
conductors with sufficient cross
the ground as close as is practicable to the structure and the
sectional area to carry the expected current flow. The
down conductor. They are normally spaced at specified
conductors must also have a high corrosion resistance and
intervals corresponding to the
must meet internationally recognised European and British
spacing on the down conductors.
earthing standards.
The information contained in this section primarily refers to Resistance to Earth
Lightning Protection Earthing Systems (LPS) and does not
For an LPS the earth termination
detail all earthing requirements for electrical wiring, although
network as a whole should have a
there are some similarities. Please refer to the IEE 16th
combined resistance of not more
edition wiring regulations for more details.
than ten ohms, before bonding to building metalwork.
Other factors to consider when designing an earthing However, the maximum resistance value for earthing systems
system are: is application specific.
A survey is required to A single earth rod may not achieve the required resistance
determine ground figure and several may be need to be fitted to achieve this;
resistivity. their combined resistance is proportional to the reciprocal of
the individual rod resistances to earth. This rule holds true as
Soil moisture content:
long as each rod is situated outside the resistance area of
more moisture always
any other. To ensure this is the case, it is generally accepted
reduces soil resistance.
that the minimum spacing between rods should not be less
Chemical composition of than their driven length.
soil: certain salts and
The expected number of rods required to obtain a particular
minerals affect soil
resistance value, e.g. ten ohms, can be roughly calculated.
resistivity.
To do this the soil resistivity needs to be taken into
Temperature: if the ground consideration. A soil resistivity test will need to be performed.
is frozen its resistance
There are several methods used to obtain a lower
becomes much higher.
resistance value:
The extent of any buried services which could affect
More rods can be driven.
the earth termination networks.
Rods can be driven deeper.
Details of metallic service pipes, rails, tanks etc. which
may need bonding into the earth system to prevent the Ring conductors connecting rods
danger of side flashing. together underground can
be used.
The area available to place earth electrodes, this may
be limited. Rods of a larger diameter can
be used.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 13

EARTHING INTRODUCTION

Where deep driving is not possible shorter rods with a larger The information contained in this
diameter can be used; copper earth mats and earth plates section is intended as a guide and
can be used in place of earth rods. should not be used to perform
designs. A.N.Wallis does not
A “crow’s foot” configuration can be used where parallel
accept responsibility for errors or
connection is not possible.
omissions. Detailed information on
Where high resistance soil conditions are a problem soil earthing design is contained in
conditioning agents can be used to internationally recognised
backfill rod holes. Conductive concrete European and British earthing
can be used to backfill an earth mat. Both standards.
effectively increase an electrodes cross
sectional area and therefore reduce its
resistance to earth.
The international standards also specify
the recommended materials used for all
earthing conductors and their dimensions.

Equipotential Bonding
It is common practice to use the buildings natural structural
steelwork and bonding it to the LPS to further improve its
ability to conduct lightning and fault currents to earth; prior
permission may be required.

Joints
Joints should be
mechanically effective,
all joints other than
welded ones are a
potential discontinuity,
and care should be
taken to ensure
contact surfaces are
clean and that fixing
clamps are tight and well protected from corrosion, which
can occur if dissimilar metals are joined. Ideally there should
be as few joints as possible in an earthing design.

Maintenance & Life of an Earth System

It is important to properly maintain an earth circuit to ensure
it retains its ability to conduct the same current carrying
capacity as it did when it was originally installed. Earth rod
resistances should be regularly checked. Corrosion and fault
currents can cause high resistance joints leading to
overheating. However, if an earth system is correctly installed
and maintained it should last for many years.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 14

EARTHING EARTH RODS & ACCESSORIES

Copperbond Earth Rods

Wallis copperbond earth rods offer installers the most economical
method of achieving a low earth resistance.
1/2"
Each rod has a high tensile strength, low carbon steel core. 99.95%
pure copper is applied electrolytically and forms a metallurgical bond
between the steel core and the copper. This combination makes the rod
ideal for deep driving whilst also provides lasting resistance to corrosion.
The threads are formed by a cold rolling process which ensures strength
and maintains the molecularly bonded copper covering along the full
length of the threads. Cold-rolled threads are stronger than cut-threads.
5/8"
The standard copper thickness is 0.25mm. Greater copper thicknesses
are also available. Please contact our sales office for further information.
Threaded
Nominal L Thread Size Shank L1 Unit Pack Part
Size mm (UNC-2A) D mm Weight Quantity Number
mm kg

3/4" 1200 1.18 ERB 412

1500 1.55 ERB 415
1 /2 ” 9/16” 12.7 30 5
1800 1.76 ERB 418
2400 2.36 ERB 424
1200 1.53 ERB 112
1500 1.88 ERB 115
3/8" 5 /8 ” 1800 5 /8 ” 14.2 30 2.29 5 ERB 118
2400 3.00 ERB 124
3000 3.79 ERB 130
1200 2.19 ERB 212
1500 2.73 ERB 215
3 /4 ” 1800 3 /4 ” 17.2 35 3.27 5 ERB 218
2400 4.35 ERB 224
3000 5.44 ERB 230

Material: Pure copper molecularly bonded onto a steel core.

Unthreaded

Nominal L Shank Unit Pack Part

Size mm D Weight Quantity Number
mm kg
3 /8 ” 1200 9.5 0.62 5 ERB 012

Material: Pure copper molecularly bonded onto a steel core.

L1 D L1

Thread
Size

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 15

EARTHING EARTH RODS & ACCESSORIES

Threaded Couplings
These Wallis high-strength couplings are used for joining copperbond
threaded earth rods together. They facilitate deep driving and ensure
continual contact between the rods both during and after installation.
The coupling also protects the earth rod threads during installation with the
threaded driving head. There is a lead-in for ease of assembly and a hex on the
outside for grip and keeping the coupling tight when driving into the ground.
All Wallis couplings are manufactured from a high copper content alloy 3/4"
ensuring excellent corrosion resistance.
5/8"
Type L D Unit Pack Part
mm mm Weight Quantity Number
kg
1 /2 ” 70 20 0.07 ERBO 12
5 /8 ” 70 20 0.09 25 ERBO 16
3 /4 ” 80 24 0.14 ERBO 20

Material: Aluminium Bronze.

Threaded Driving Heads

These Wallis re-usable threaded driving heads are suitable for driving
copperbond threaded earth rods by hand or with a power hammer.
The driving head screws into the threaded coupling to allow deep
driving of the earth rods.
Type L D Unit Pack Part
mm mm Weight Quantity Number
kg
3/4"
1 /2 ” 50 20 0.05 ERBD 12
5 /8 ” 55 22 0.08 25 ERBD 16
5/8"
3 /4 ” 60 25 0.13 ERBD 20

Material: Steel.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 16

EARTHING EARTH RODS & ACCESSORIES

Solid Copper Earth Rods

These earth rods are designed for use where extremely high corrosion
15 resistance and exceptionally long life are required. Solid copper earth
rods are produced from solid copper bar and are internally threaded
for jointing. When deep driving a solid copper earth rod the usual
practice is to insert the rod into a bore hole and backfill with either
Low-Resistance Earthing Compound or Bentonite, (see page 26 for
further details).
16
Shank L Thread L1 Unit Pack Part
D mm Size mm Weight Quantity Number
mm kg
15 1200 M10 20 1.88 5 ERC 112
1500 2.66 ERC 115
1800 3.20 ERC 118
20 16 M10 20 5
2400 4.28 ERC 124
3000 5.36 ERC 130
1200 3.34 ERC 212
1500 4.18 ERC 215
20 1800 M10 20 5.03 5 ERC 218
2400 6.71 ERC 224
25
3000 8.40 ERC 230
1200 5.23 ERC 312
1500 6.54 ERC 315
25 1800 M12 25 7.86 1 ERC 318
2400 10.5 ERC 324
3000 13.1 ERC 330

Material: Copper to BS EN 13601.

D Thread
Size

L1 L1

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 17

EARTHING EARTH RODS & ACCESSORIES

Driving Heads
The driving head protects the internal thread and the top of the solid
copper earth rod from damage when being driven into the ground.

D L Thread L1 Unit Pack Part

mm mm Size mm Weight Quantity Number
kg
16 38 M10 20 0.03 ERCD 16
20 41 M10 20 0.06 25 ERCD 20 ERCD 16

25 45 M12 25 0.10 ERCD 25

Material: Steel.
L

Thread
Size D

L1

Driving Spikes
These driving spikes enable solid copper earth rods to be driven easily
into the ground.
D L Thread L1 Unit Pack Part
mm mm Size mm Weight Quantity Number
kg
16 42 M10 20 0.03 ERCS 16
20 51 M10 20 0.06 25 ERCS 20
25 60 M12 25 0.10 ERCS 25

Material: Steel. ERCS 16

L

Thread D
Size

L1

Coupling Dowels
The phosphor bronze coupling dowel is used for joining solid copper
earth rods together.

Thread L Unit Pack Part

Size mm Weight Quantity Number
kg
M10 40 0.02 ERD 01
25 ERD 01
M12 50 0.04 ERD 02

Material: Phosphor Bronze.

Thread
Size

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 18

EARTHING EARTH RODS & ACCESSORIES

Stainless Steel Earth Rods

These earth rods are designed for use where problems may be caused
by galvanic corrosion due to dissimilar metals being buried in close
16
proximity. They are produced from stainless steel rod and are internally
threaded for jointing. They are highly resistant to corrosion.

Shank L Thread L1 Unit Pack Part

D mm Size mm Weight Quantity Number
mm kg
1200 1.87 ERZ 112
20
1500 2.35 ERZ 115
16 1800 M10 20 2.83 5 ERZ 118
2400 3.79 ERZ 124
3000 4.75 ERZ 130
1200 2.95 ERZ 212
25
1500 3.71 ERZ 215
20 1800 M10 20 4.46 5 ERZ 218
2400 5.96 ERZ 224
3000 7.46 ERZ 230
1200 4.64 ERZ 312
1500 5.81 ERZ 315
25 1800 M12 25 6.99 1 ERZ 318
2400 9.34 ERZ 324
3000 11.69 ERZ 330

Material: Stainless Steel to BS EN 10088.

D Thread
Size

L1 L1

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 19

EARTHING EARTH RODS & ACCESSORIES

Driving Heads
The driving head protects the internal thread and the top of the stainless
steel earth rod from damage when being driven into the ground.

D L Thread L1 Unit Pack Part

mm mm Size mm Weight Quantity Number
kg
16 38 M10 20 0.03 ERCD 16
20 41 M10 20 0.06 25 ERCD 20
25 45 M12 25 0.10 ERCD 25 ERCD 16

Material: Steel. L

Thread
Size D

L1

Driving Spikes
These driving spikes enable stainless steel earth rods to be driven easily
into the ground.

D L Thread L1 Unit Pack Part

mm mm Size mm Weight Quantity Number
kg
16 42 M10 20 0.03 ERCS 16
20 51 M10 20 0.06 25 ERCS 20
25 60 M12 25 0.10 ERCD 25

Material: Steel. L
ERCS 16

Thread D
Size

L1

Coupling Dowels
The stainless steel coupling dowel is used for joining stainless steel
earth rods together.

Thread L Unit Pack Part

Size mm Weight Quantity Number
kg
M10 40 0.02 ERD 16
25
M12 50 0.04 ERD 25
Material: Stainless Steel.
ERD 16

Thread
Size

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 20

EARTHING EARTH RODS & ACCESSORIES

Galvanised Steel Earth Rod Set

This galvanised steel earth rod has a male thread at the top and a female
thread at the bottom enabling rods to be joined together.
After machining, the rod is hot-dip galvanised with a coating of zinc not
less than 610 g/m2. The rod is supplied as a standard set complete with
toughened steel driving head, hardened steel driving spike and
galvanised steel wire rope grip.

Nominal L Thread D L1 L2 Unit Pack Part

Size mm Size mm mm mm Weight Quantity Number
(BSF) kg
5 /8 ” 1200 3 /8 ” 16.5 - 17.0 30 25 2.10 5 ERG 112

Material: Mild Steel galvanised to BS EN ISO 1461.

D Thread
Size
Thread
Size

L1 L2

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 21

EARTHING EARTH RODS & ACCESSORIES

Cross Profile Galvanised Steel Earth Rods

Wallis cross profile galvanised steel earth rods are ideally suited for
installation in earth termination systems of temporary structures such as
antennas or distribution boards on construction sites.
These x-shaped rods are manufactured in steel with a minimum average
zinc coating of 70μm. Each earth rod has a splice plate with three
connecting holes.

Section L Splice Plate Unit Pack Part

mm mm Holes Weight Quantity Number
No. x Ø kg
mm
1000 2.34 ERX 310
1500 3.51 ERX 315
50 x 50 x 3 2000 3 x 11 4.61 5 ERX 320
2500 5.85 ERX 325
3000 7.03 ERX 330
1000 3.90 ERX 510
1500 5.85 ERX 515
50 x 50 x 5 2000 3 x 11 7.80 5 ERX 520
2500 9.75 ERX 525
3000 11.75 ERX 530

Material: Carbon steel galvanised to BS EN ISO 1461.

3 or 5

50 3 or 5

50

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 22

EARTHING EARTHING PRODUCTS

Earth Rod to Tape ‘A’ Clamps

These clamps are used for joining earth rods to different sizes of copper
tape. The clamps have a high resistance to corrosion and are
mechanically strong to ensure a lasting connection.

Earth Rod Maximum L W H Unit Pack Part

Shank Ø Tape Size mm mm mm Weight Quantity Number
mm mm kg
ERA 1625 26 x 15 43 37 17 0.10 50 ERA 1625
12.7 32 x 15 43 45 18 0.20 25 ERA 1631
39 x 15 44 51 22 0.25 25 ERA 1638
26 x 14 43 37 17 0.10 50 ERA 1625
32 x 14 43 45 18 0.20 25 ERA 1631
ERA 2525 14.2
39 x 14 44 51 22 0.25 25 ERA 1638
51 x 16 47 64 20 0.21 25 ERA 1650
26 x 13 43 37 17 0.10 50 ERA 1625

ERA 1631 32 x 13 43 45 18 0.20 25 ERA 1631

15.0
39 x 13 44 51 22 0.25 25 ERA 1638
51 x 15 47 64 20 0.21 25 ERA 1650
26 x 12 43 37 17 0.10 50 ERA 1625
32 x 12 43 45 18 0.20 25 ERA 1631
16.0
39 x 12 44 51 22 0.25 25 ERA 1638
ERA 1650
51 x 14 47 64 20 0.21 25 ERA 1650
26 x 11 43 37 17 0.10 50 ERA 1625
32 x 11 43 45 18 0.20 25 ERA 1631
17.2 39 x 11 44 51 22 0.25 25 ERA 1638
51 x 13 47 64 20 0.21 25 ERA 1650
26 x 18 55 40 25 0.20 10 ERA 2525
26 x 8 43 37 17 0.10 50 ERA 1625
32 x 8 43 45 18 0.20 25 ERA 1631
20.0 39 x 8 44 51 22 0.25 25 ERA 1638
51 x 10 47 64 20 0.21 25 ERA 1650
26 x 16 55 40 25 0.20 10 ERA 2525
25.0 26 x 11 55 40 25 0.20 10 ERA 2525

Material: Aluminium Bronze with M10 x 25mm Phosphor Bronze Set Screw.

The aluminium version is mainly used for connecting aluminium tape to

a puddle flange rod as part of a lightning protection system.
Rod Maximum L W H Unit Pack Part
Shank Ø Tape Size mm mm mm Weight Quantity Number
mm mm kg
16.0 26 x 12 44 40 19 0.60 25 ERA 1625A
ERA 1625A
Material: Aluminium with M10 x 25mm Stainless Steel Set Screw.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 23

EARTHING EARTHING PRODUCTS

Earth Rod to Cable ‘G’ Clamps

These clamps are used for joining earth rods to different sizes of
stranded copper conductor. The clamps have a high resistance to ERR 1035
corrosion and are mechanically strong to ensure a lasting connection.

Earth Rod Conductor L W H Unit Pack Part

Shank Ø Range mm mm mm Weight Quantity Number
mm mm2 kg
9.5 6 - 35 32 20 16 0.04 25 ERR 1035
6 - 35 34 25 15 0.05 25 ERR 1635
12.7
35 - 70 41 25 17 0.08 50 ERR 1670* ERR 1635

6 - 16 34 25 15 0.05 25 ERR 1635

14.2 16 - 70 41 25 17 0.08 50 ERR 1670*
70 - 185 48 30 19 0.10 50 ERR 2095*
6 - 16 34 25 15 0.05 25 ERR 1635
15.0 16 - 70 41 25 17 0.08 50 ERR 1670*
ERR 1670
70 - 150 48 30 19 0.10 50 ERR 2095*
6 - 70 41 25 17 0.08 50 ERR 1670*
16.0
70 - 120 48 30 19 0.10 50 ERR 2095*
17.2 6 - 95 48 30 19 0.10 50 ERR 2095*
20.0 6 - 70 48 30 19 0.10 50 ERR 2095*

Material: Gunmetal with M10 x 25mm Phosphor Bronze Set Screw.

ERR 2095
(ERR1035 in Naval Brass with M6 x 20mm Stainless Steel Set Screw).
* Suitable for use with 8mm Ø solid circular copper conductor.

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EARTHING EARTHING PRODUCTS

‘U’ Bolt Clamps

This versatile range of Wallis ‘U’ bolt clamps can be used to connect flat tapes
and stranded cables to earth rods, reinforcing bars (re-bar), hand rails etc.
Single Plate Type for Horizontal Flat Tapes
Used to connect flat tapes in a horizontal position on the rod.
Maximum Hole L W H Unit Pack Part
Rod Ø Centres mm mm mm Weight Quantity Number
mm mm kg
16 30 58 62 33 0.15 20 ERU 016
25 37 70 62 33 0.15 20 ERU 025
31 41 85 68 33 0.28 10 ERU 031
38 46 90 75 33 0.28 10 ERU 038
50 63 100 90 33 0.45 10 ERU 050

ERU 025
Material: Gunmetal plate with M10 threaded Copper ‘U’ Bolt.

Double Plate Type for Vertical Flat Tapes

Used to connect flat tapes in a vertical position on the rod.
Maximum Tape L W H Unit Pack Part
Rod Ø Width mm mm mm Weight Quantity Number
mm mm kg
16 68 62 33 0.21 20 ERU 216
25 70 62 33 0.23 20 ERU 225
31 25 85 68 33 0.33 10 ERU 231
38 90 75 33 0.38 10 ERU 238
50 100 90 33 0.58 10 ERU 250
ERU 216
Material: Gunmetal plate with M10 threaded Copper ‘U’ Bolt.

Double Plate Type for Vertical Stranded Cables

Used to connect stranded cables in a vertical and horizontal position on
the rod.
Maximum Conductor L W H Unit Pack Part
Rod Ø Range mm mm mm Weight Quantity Number
mm mm2 kg
16 - 150 57 51 0.21 20 ERU 470
16 40
150 - 300 73 68 0.34 10 ERU 570
16 - 70 57 51 0.21 20 ERU 470
20 40
70 - 300 73 68 0.34 10 ERU 570
ERU 470
16 - 70 85 80 0.45 ERU 670
25 40 10
70 - 300 98 93 0.54 ERU 770

Material: Gunmetal plates with M10 threaded Copper ‘U’ Bolt.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 25

EARTHING EARTHING PRODUCTS

Re-bar Clamps
This versatile range of Wallis Re-bar clamps is used to connect re-bar to
re-bar or re-bar to stranded cable. They provide a strong mechanical
connection along with excellent resistance to corrosion.

Maximum Re-bar Unit Pack Part

Re-bar Ø Range Ø Weight Quantity Number
mm mm kg
10 6 - 10 0.21 20 RBC 010
20 12 - 20 0.34 20 RBC 020
25 20 - 25 0.21 10 RBC 025
32 25 - 32 0.34 10 RBC 032
40 32 - 40 0.54 10 RBC 040

Material: Gunmetal plates with Copper ‘U’ Bolt.

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EARTHING EARTHING PRODUCTS

Split Connector Clamps

Split connector clamps are used to connect cable lugs onto earth rods.
The clamps are designed to suit our full range of earth rods. All clamps
are assembled with an M12 x 50mm set screw and fittings, except
ERS010 which has an M8 x 40mm set screw and fittings. ERC24 also
has a wing nut.
For use with Copperbond Earth Rods (on rod thread)
Nominal Thread L W H Unit Pack Part
Rod Size Size mm mm mm Weight Quantity Number
(UNC-2A) kg
5 /8 ” 5 /8 ” 42 26 26 0.22 ERS 016
10
3 /4 ” 3 /4 ” 50 29 29 0.31 ERS 020

ERS 016 Material: Gunmetal or Naval Brass.

For use with Copperbond Earth Rods (on rod shank)

Rod L W H Unit Pack Part
Shank Ø mm mm mm Weight Quantity Number
mm kg
9.5 27 18 20 0.08 ERS 010
10
14.2 42 25 25 0.27 ERC 24

Material: Gunmetal or Naval Brass.

ERC 24
For use with Solid Copper & Stainless Steel Earth Rods (on rod shank)
Rod L W H Unit Pack Part
Shank Ø mm mm mm Weight Quantity Number
mm kg
15 42 26 25 0.22 ERC 26
16 42 26 25 0.21 10 ERSS 16
20 50 29 29 0.28 ERSS 20

ERSS 20 Material: Gunmetal or Naval Brass.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:43 Page 27

EARTHING EARTHING PRODUCTS

Solid Copper Earth Plates

Solid copper plates provide a long lasting earthing solution in places
where driving earth rods might be impractical. They are often installed
in conjunction with Low-Resistance Earthing Compound or Bentonite.

LxW H Surface Unit Pack Part

mm mm Area Weight Quantity Number
m2 kg
1.5 4.80 EMP 601
600 x 600 0.73 1
3.0 9.60 EMP 603
1.5 10.80 EMP 901
900 x 900 1.63 1
3.0 21.60 EMP 903

Material: Copper to BS EN 12163 (formerly BS 2874).

Solid Copper Lattice Mats

Solid copper lattice mats offer a more economical cost option to
installing solid copper plates.
They are often used for potential grading and are a preferred option on
installations such as telecommunication towers, where touch and step
potential could cause problems.

LxW H Surface Grid Unit Pack Part

mm mm Area Weight Quantity Number
m2 kg
600 x 600 3.0 0.31 5 Bar 4.0 1 EML 603
0.55 6 Bar 7.2 EML 903
900 x 900 3.0 1
0.46 5 Bar 6.1 EML 903 SPC

Material: Copper to BS EN 13601 (formerly BS 1432).

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EARTHING EARTHING PRODUCTS

Low-Resistance Earthing Compound

Wallis low-resistance earthing compound is an electrically conductive
aggregate. It is a grey, fine granular material used in place of other
concrete aggregates such as sand. When mixed with cement and
water it forms a permanent electrically conductive concrete.
The conductive concrete is ideal for use in difficult ground conditions.
It is a permanent, stable and maintenance free solution to obtaining a
low resistivity earth. The typical mixing ratio of low-resistance earthing
compound to cement is 3:1 by weight.

Type Unit Pack Part

Weight Quantity Number
kg
Low-Resistance Earthing Compound Only EMA 25
Low-Resistance Earthing Compound Pre-Mixed 25 1 Bag
EMA 26
with Cement

Low
Resistance
Earthing
Compound

Bentonite
Bentonite is a moisture retaining clay used as an earth electrode back-fill
to help lower soil resistivity. The clay is a sodium activated montmorillonite,
which when mixed with water swells to many times its original dry volume.
Bentonite can be supplied in granular or powder form. The granular
form is easier to handle as the powder can cause dust in windy
conditions. Granular is the preferred option for filling trenches as the
substance can be mixed in the trench. Powder is the preferred option
for pouring into bore holes to ensure the mixture is a thin enough
consistency to reach the bottom of the hole.
The typical expansion ratio when mixed with water is 2:1.

Type Unit Pack Part

Weight Quantity Number
kg
Bentonite Granular Form EBG 25
25 1 Bag
Bentonite Powder Form EBG 25P

Bentonite

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 29

EARTHING EARTHING PRODUCTS

Heavy Duty Earth Inspection Housings

The Wallis heavy duty earth housing is designed, shaped and sized to fit
easily into brick paved walkways. The lip of the base makes a flush fit with
standard-sized bricks making the housing blend in without the need for a
cement surround.
The housing will withstand loads of up to 6,000 kilograms and is suitable
for most commercial and industrial applications. The lid locks into the base
and can be opened with a standard flat screwdriver. The base has three
built-in slots for locating earth bars.

Lid LxW H L1 x W1 H1 Unit Pack Part

Colour mm mm mm mm Weight Quantity Number
kg EPP 001 W

Black EPP 001 W

306 x 306 216 260 x 260 55 3.0 1
Grey EPP 002 W

Material: Polypropylene base with GRP lid.

H1

EPP 002 W
H

H1

W1
W

L1

Inspection Housing Earth Bars

(for Heavy Duty Earth Inspection Housings)
These earth bars fit into the slots provided in the heavy duty earth
inspection housings and are used when multiple connections to the
earth rod are required.

No. Hole L W H Unit Pack Part

Holes Ø mm mm mm Weight Quantity Number
mm kg EBC 35
5 0.24 EBC 35
11 203 25 6 1 EBC 37
7 0.22 EBC 37

Material: Copper to BS EN 13601.

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EARTHING EARTHING PRODUCTS

Light Duty Earth Inspection Housings

The Wallis light duty earth inspection housing has a maximum safe
working load of 2,000 kilograms. It is UV stabilised against degradation
by sunlight and non-brittle to prevent cold weather damage.
The unique, detachable easy-locking lid ensures security of equipment
as the locking mechanism can only be operated by the special key
provided with the housing. The base has built-in slots for locating earth
bars.
Its lightweight feature allows easy handling, storage and transportation.
ERH 20 The termination depth is increased 100% by simply locking two units
together, allowing deeper earth electrode connections to be made.

Lid LxW H L1 x W1 Unit Pack Part

Colour mm mm mm Weight Quantity Number
kg
Black ERH 20
260 230 200 1.50 1
Grey ERH 21

Material: Polypropylene.

ERH 21

W1

L1

L W

Inspection Housing Earth Bars

(for Light Duty Earth Inspection Housings)
These earth bars fit into the slots provided in the light duty earth
inspection housings and are used when multiple connections to the
earth rod are required.
No. Hole L W H Unit Pack Part
EBC 25 Holes Ø mm mm mm Weight Quantity Number
mm kg
5 0.42 EBC 25
EBC 27 11 250 30 6 1
7 0.39 EBC 27

Material: Copper to BS EN 13601.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 31

EARTHING EARTHING PRODUCTS

Concrete Earth Inspection Housing

The Wallis concrete earth inspection housing is load rated to 4,000
kilograms and is suitable for most industrial applications. The housing
can have an internal earth bar fitted diagonally across in slots provided
in the base.
L W H Unit Pack Part
mm mm mm Weight Quantity Number
kg
310 310 170 28.00 1 ERH 01W

Material: Concrete.

Inspection Housing Earth Bars

(for Concrete Earth Inspection Housings)
These earth bars fit into the slots provided in the concrete inspection
housings and are used when multiple connections to the earth rod are
required.
No. Hole L W H Unit Pack Part
Holes Ø mm mm mm Weight Quantity Number
mm kg EBC 05
5 0.49 EBC 05
11 285 30 6 1 EBC 07
7 0.50 EBC 07

Material: Copper to BS EN 13601.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 32

EARTHING EARTHING PRODUCTS

Insulators
These Wallis insulators are supplied with or without studs and locking
nuts.
Type Thread W H Unit Pack Part
Size mm mm Weight Quantity Number
kg
Insulator only 0.08 EBI 001
Insulator with 2 M10 40 40 10
studs & 3 nuts 0.16 EBI 002
EBI 001
EBI 002 Material: Reinforced Polyester.

Thread Size

Earth Rod Seals

The earth rod seal is fitted when the earth rod connection is below the
water level and where there is a possibility of water entering the
inspection housing from below ground. The seal is particularly useful
where internal earths are required such as in a basement building.
Both single and double flange seals can be adapted to suit our full
range of earth rod diameters by use of special compression rings and
seals. The seals are used in conjunction with the Wallis heavy duty
earth inspection housings shown on page 27.
Single Flange
PES 001 Earth Rod Flange Pipe Unit Pack Part
PES 002
Type Ø Length Weight Quantity Number
mm mm kg
15mm Ø PES 001-15
16mm Ø PES 001-16
20mm Ø 366 300 2.00 1 PES 001-20
5/8” UNC Threaded PES 001-58
3/4” UNC Threaded PES 001-34
Material: Plastic.

Double Flange (for deep concrete slab applications)

Earth Rod Flange Pipe Unit Pack Part
Type Ø Length Weight Quantity Number
mm mm kg
15mm Ø PES 002-15
16mm Ø PES 002-16
20mm Ø 366 1200 3.20 1 PES 002-20
5/8” UNC Threaded PES 002-58
3/4” UNC Threaded PES 002-34

Material: Plastic.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 33

EARTHING EARTHING PRODUCTS

Earth Bonding Points

These Wallis earth bonding points are installed to provide a convenient
earth system connection point in concrete structures. When cast into
concrete they connect the re-bar to the earthing or lightning protection
system.
EGP 01
Earth Bonding Points only

No. Hole Size Plate Size Stem Ø L Unit Pack Part

Holes mm mm mm mm Weight Quantity Number
kg
1 38 x 38 0.16 EPG 01
10.7 EGP 02
2 M10 x 20 70 x 35 75 0.29 10 EPG 02
(70mm2)
4 65 x 65 0.54 EPG 04

Material: Gunmetal.

L
EGP 04

Earth Bonding Points with Pre-welded Tails

No. Type Unit Pack Part

Holes Weight Quantity Number
kg

1 EGP 01 with pre-welded 500mm long

0.64 1 EGP 01 500
tail of 70mm2 PVC insulated cable
EGP 02 with pre-welded 500mm long EGP 01 500
0.77 EGP 02 500
tail of 70mm2 PVC insulated cable
EGP 02 with pre-welded 1000mm long
2 1.14 1 EGP 02 1000
tail of 70mm2 PVC insulated cable
EGP 02 with pre-welded 1500mm long
1.50 EGP 02 1500
tail of 70mm2 PVC insulated cable
EGP 04 with pre-welded 500mm long
1.02 EGP 04 500
tail of 70mm2 PVC insulated cable
EGP 04 500
4 EGP 04 with pre-welded 1000mm long
1.39 1 EGP 04 1000
tail of 70mm2 PVC insulated cable
EGP 04 with pre-welded 1500mm long
1.75 EGP 04 1500
tail of 70mm2 PVC insulated cable

Material: Gunmetal body with PVC insulated copper cable tail.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 34

EARTHING EARTHING PRODUCTS

Earth Bars
Earth bars are available in a variety of sizes and specifications. Our
standard earth bars are shown in the tables below. Special earth
bars manufactured to customer requirements are also available.
Recommended fixing by countersunk wood screw 11/2” x No. 12
and No. 12 wall plug.
Earth Bars
No. L W H Unit Pack Part
Terminations mm mm mm Weight Quantity Number
kg
6 400 2.00 EBC 006
8 500 2.30 EBC 008

EBC 006 10 650 3.20 EBC 010

12 750 4.00 EBC 012
14 850 4.90 EBC 014
16 950 5.80 EBC 016
18 1100 90 60 6.70 1 EBC 018
20 1250 7.60 EBC 020
22 1300 8.50 EBC 022
24 1400 9.40 EBC 024
26 1550 10.30 EBC 026
28 1650 11.20 EBC 028
EBC 010 30 1800 12.10 EBC 030

Earth Bars with Single Disconnecting Link

No. L W H Unit Pack Part
Terminations mm mm mm Weight Quantity Number
kg
6 485 2.50 EBC 106
8 585 3.00 EBC 108
10 735 3.90 EBC 110
EBC 106 12 835 4.70 EBC 112
14 935 5.60 EBC 114
16 1035 6.50 EBC 116
18 1185 90 60 7.40 1 EBC 118
20 1335 8.30 EBC 120
22 1385 9.20 EBC 122
24 1485 10.10 EBC 124
26 1635 11.00 EBC 126
28 1735 11.90 EBC 128
30 1885 12.80 EBC 130
EBC 108

L W

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 35

EARTHING EARTHING PRODUCTS

Earth Bars (continued)

Earth Bars with Double Disconnecting Links.

No. L W H Unit Pack Part

Terminations mm mm mm Weight Quantity Number
kg
6 570 3.10 EBC 206 EBC 206
8 670 3.70 EBC 208
10 820 4.50 EBC 210
12 920 5.30 EBC 212
14 1020 6.20 EBC 214
16 1120 7.10 EBC 216
18 1270 90 60 8.00 1 EBC 218
20 1420 8.90 EBC 220
22 1470 9.80 EBC 222
24 1570 10.70 EBC 224
26 1720 11.60 EBC 226
28 1820 12.50 EBC 228
30 1885 13.40 EBC 230

Material:
Bar: 50 x 6mm hard drawn copper bar to BS EN 13601.
Base: Plastic.
Fittings: M10 Hexagon Head Set Screws, Nuts & Washers.

Disconnecting Link
The disconnecting link provides a temporary break in the earth
connection to allow inspection and testing of the earth electrode.

L W H Unit Pack Part

mm mm mm Weight Quantity Number
kg
120 45 45 0.6 1 EBC 100
EBC 100
Material:
Bar: 50 x 6mm hard drawn copper bar to BS EN 13601.
Base: Plastic.

W
L

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 36

EARTHING EARTHING PRODUCTS

Earth Blocks
These Wallis blocks allow earth conductor termination, or live conductor
termination with a suitable, fully insulated housing.

EBB 004 Type L W H Unit Pack Part

mm mm mm Weight Quantity Number
kg
EBB 008 4-Way Single 54 9 0.06 EBB 004/1
4-Way Double 51 18 12 0.09 10 EBB 004
8-Way Single 88 18 0.15 EBB 008
EBB 004/1
Material: Tinned Brass.

Earth Bosses
The earth boss is designed to provide an earth connection point on a
steel structure. The boss is welded onto steel vessels, tanks and other
structures
D L Thread Unit Pack Part
mm mm Size Weight Quantity Number
kg
50 50 0.77 EPB 5050
50 40 0.62 EPB 5040
50 30 M10 0.47 1 EPB 5030
40 40 0.47 EPB 4040
40 30 0.35 EPB 4030

Material: Mild Steel with Stainless Steel fittings.

Thread
D Size

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 37

EARTHING EARTHING PRODUCTS

Tower Earth Clamps

Tower earth clamps are used for bonding copper conductors onto steel
surfaces.
The double-plate design provides a robust fixing in areas where cladding
may be installed or where the complete clamp will be covered by
concrete. The clamp is fixed by drilling a hole in the steelwork and
securing with the set screw provided.

Conductor L W H Set Unit Pack Part

Range mm mm mm Screw Weight Quantity Number
mm2 kg BTC 120

16 - 70 45 30 17 M10 x 50mm 0.12 BTC 070

70 - 120 48 35 22 M12 x 60mm 0.23 BTC 120
BTC 070
120 - 185 55 40 28 M12 x 75mm 0.30 10 BTC 185
185 - 240 63 45 35 M12 x 80mm 0.40 BTC 240
240 - 300 70 53 42 M12 x 90mm 0.60 BTC 300

Material: Gunmetal.

H
L

Parallel Groove Clamps

Wallis Parallel Groove Clamps, for stranded copper cable connections,
are manufactured from high-strength, corrosion-resistant copper alloy
and assembled with two stainless steel set screws.

Conductor L W H Set Unit Pack Part

Range mm mm mm Screws Weight Quantity Number
mm2 kg
25 - 70 50 40 7 M8 x 35mm 0.38 PGC 070
70 - 95 54 45 8.5 M10 x 45mm 0.46 PGC 095
PGC 095
95 - 185 65 57 12.5 M10 x 55mm 0.55 10 PGC 185
185 - 240 78 71 14 M10 x 55mm 0.66 PGC 240
240 - 300 94 85 16 M10 x 60mm 0.78 PGC 300

Material: Gunmetal.

H
W

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 38

EARTHING EARTHING PRODUCTS

Split Bolt Connectors

The high strength split bolt connectors will accept a wide range of stranded
copper conductors. No specialist tools are required for installation.
Main Tap H W Unit Pack Part
Conductor A Conductor B mm mm Weight Quantity Number
mm2 mm2 kg
10 1.5 - 10 20 4.1 0.02 200 SBC 010
16 2.5 - 16 23 5.3 0.03 150 SBC 016
25 2.5 - 25 28 6.8 0.04 100 SBC 025
35 2.5 - 35 29 7.9 0.05 80 SBC 035
SBC 120 SBC 025 50 2.5 - 50 35 9.5 0.08 50 SBC 050
70 2.5 - 70 39 10.7 0.12 35 SBC 070
95 2.5 - 95 45 13.5 0.15 20 SBC 095
120 10 - 120 47 14.7 0.18 20 SBC 120
150 10 - 150 51 16.2 0.23 10 SBC 150
185 50 - 185 57 17.8 0.35 10 SBC 185
240 95 - 240 64 19 0.46 10 SBC 240
Material: Gunmetal.

W
B
W

Flexible Copper Braid Bonds

These flexible copper braid bonds are used for bonding metal gates,
doors, fences etc. Other lengths and sizes are available on request.

Size Hole Hole Unit Pack Part

WxH Centres L Size Weight Quantity Number
mm mm mm kg
200 0.04 BFE 200
25 x 3.5 300 11 0.07 10 BFE 300
400 0.15 BFE 400

BFE 400 Material: Copper.

BFE 300

BFE 200
H

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:44 Page 39

EARTHING STATIC EARTHING PRODUCTS

Static Earth Receptacle

This receptacle is used in open areas where a temporary earthing point
may be required, such as airfields or petrol stations. Provides a static
discharge point for aircraft, tankers, vehicles and boats.
H D Unit Pack Part
mm mm Weight Quantity Number
kg
135 125 6.50 1 ERX 05

Material: Gunmetal.

Eyebolts
Provides a static earth point when attached to the top of a threaded
copperbond earth rod.
Thread H Unit Pack Part
Size mm Weight Quantity Number
(UNC-2A) kg
5/8” 0.62 EYE 058
135 1
3/4” 0.55 EYE 034

Material: Gunmetal.

Thread
Size

Static Earth Bar

This wall-mounted bracket provides a temporary earth point.

L H Unit Pack Part

mm mm Weight Quantity Number
kg
350 100 1.52 1 ERY 10

Material: Phosphor Bronze.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:45 Page 40

EARTHING COMPRESSION CONNECTORS

‘C’ Crimp Connectors

These range-taking ‘C’ Crimp Connectors are specifically designed for
tap and parallel connections of stranded copper cables in earthing
applications.

Main Tap L W H Unit Pack Part

Conductor A Conductor B mm mm mm Weight Quantity Number
mm2 mm2 kg
10 4 - 10 12 9 13 0.01 100 CCC 010
CCC 035
10 - 16 10 - 16 17 12 19 0.01 100 CCC 016
16 4 17 12 19 0.01 100 CCC 016
16 - 25 1.5 - 10 12 13 20 0.02 100 CCC 25-10
25 10 - 16 19 12 21 0.02 50 CCC 25PM
25 10 - 25 20 15 24 0.04 50 CCC 025
35 1.5 - 16 20 15 24 0.04 50 CCC 025
35 25 - 35 20 15 27 0.05 50 CCC 035
50 4 - 16 20 15 27 0.05 50 CCC 035

CCC 070
50 16 - 50 20 17 27 0.07 50 CCC 050
70 1.5 - 25 20 17 27 0.07 25 CCC 050
50 - 70 4 - 35 28 21 33 0.09 25 CCC 70-35
50 - 70 35 - 70 28 21 34 0.10 25 CCC 070
70 - 95 35 - 70 30 26 41 0.10 25 CCC 075
95 4 - 35 30 26 41 0.11 25 CCC 95-35
70 - 95 95 30 26 41 0.12 25 CCC 095
120 35 - 120 30 28 45 0.12 25 CCC 120
150 6 - 70 30 28 45 0.12 25 CCC 120
150 95 - 150 30 28 45 0.15 10 CCC 150
CCC 240
120 - 185 95 - 185 35 33 54 0.20 10 CCC 185
150 - 185 70 - 150 35 33 54 0.20 10 CCC 185
240 95 - 120 37 34 54 0.24 10 CCC 240-120
240 150 - 240 40 34 54 0.24 10 CCC 240

Material: Copper.

L
B H

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:45 Page 41

EARTHING COMPRESSION CONNECTORS

Compression Terminals
Wallis cable terminals are manufactured from high-conductivity seamless
copper tube and feature bell mouth entry for cables up to 500mm2 and
chamfered entry for cables 500m2 to 1000mm2.
All terminals are annealed, to avoid cracking and splitting when crimped,
and electro-tin plated to combine maximum electrical conductivity with
mechanical strength. An inspection hole is provided to check cable
location prior to crimping.

Conductor Palm Hole L W Unit Pack Part

Size Size mm mm Weight Quantity Number
mm2 mm kg
4 21 9 CLG 64
5 24 10 CLG 65
6 6 24 11 0.01 100 CLG 66
CLG 68
8 25 12 CLG 68
10 26 12 CLG 610
5 26 11 CLG 105
6 26 11 CLG 106
10 8 29 13 0.01 100 CLG 108
CLG 1010
10 39 16 CLG 1010
12 39 18 CLG 1012
6 30 11 CLG 166
8 30 13 CLG 168
16 0.01 100
10 35 15 CLG 1610
12 42 18 CLG 1612 CLG 258
6 32 14 CLG 256
8 32 14 CLG 258
25 0.01 50
10 38 16 CLG 2510
12 38 18 CLG 2512
6 35 15 CLG 356
8 35 15 CLG 358 CLG 506

35 10 40 15 0.01 50 CLG 3510

12 40 18 CLG 3512
14 43 20 CLG 3514
6 37 17 CLG 506
8 37 17 CLG 508
50 10 42 17 0.02 50 CLG 5010
CLG 9510
12 42 17 CLG 5012
14 45 20 CLG 5014
6 40 21 CLG 706
8 40 21 CLG 708
10 46 21 CLG 7010
70 0.04 50 W
12 46 21 CLG 7012
14 50 21 CLG 7014
L
16 50 21 CLG 7016
6 47 25 CLG 956
8 49 25 CLG 958
10 49 25 CLG 9510
95 0.06 25
12 49 25 CLG 9512
14 56 25 CLG 9514
16 56 25 CLG 9516
Table continues on page 40.

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Wallis Cat 08 Pt1 Singles.qxp 10/12/08 12:45 Page 42

EARTHING COMPRESSION CONNECTORS

Compression Terminals (continued)

Conductor Palm Hole W H Unit Pack Part
Size Size mm mm Weight Quantity Number
mm2 mm kg
8 50 27 CLG 1208
10 56 27 CLG 12010
12 56 27 CLG 12012
120 0.07 25
14 56 27 CLG 12014
16 60 27 CLG 12016
CLG 1208
20 66 27 CLG 12020
8 66 30 CLG 1508
10 68 30 CLG 15010
12 68 30 CLG 15012
150 0.09 25
14 68 30 CLG 15014
16 70 30 CLG 15016
20 75 30 CLG 15020
CLG 15012 10 67 33 CLG 18510
12 68 33 CLG 18512
185 14 68 33 0.10 10 CLG 18514
16 70 33 CLG 18516
20 75 33 CLG 18520
10 88 38 CLG 24010
12 88 38 CLG 24012
240 14 88 38 0.14 10 CLG 24014
16 88 38 CLG 24016
CLG 24014
20 88 38 CLG 24020
10 97 41 CLG 30010
12 97 41 CLG 30012
300 14 97 41 0.17 10 CLG 30014
16 97 41 CLG 30016
20 97 41 CLG 30020
12 108 47 CLG 40012
14 108 47 CLG 40014
400 0.20 10
16 108 47 CLG 40016

CLG 30016 20 108 47 CLG 40020

16 117 53 CLG 50016
500 18 117 53 0.50 5 CLG 50018
20 117 53 CLG 50020
16 127 63 CLG 63016
W 630 18 127 63 0.8 5 CLG 63018
20 127 63 CLG 63020
L
16 164 70 CLG 80016
800 18 164 70 1.00 5 CLG 80018
20 164 70 CLG 80020
18 164 77 CLG 100018
1000 1.30 5
20 164 77 CLG 100020

Material: Tin Plated Copper.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 1

LIGHTNING PROTECTION CONTENTS

LIGHTNING PROTECTION
Introduction 42 – 43

Flat Tape System 44 – 61

Solid Circular System 62 – 71

Cable & Wire System 72 – 78

Miscellaneous Products 79 – 83

Free-Standing Air Terminals 84 – 86

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 2

LIGHTNING PROTECTION INTRODUCTION

Structural Lightning Protection termination; the “zone of protection” is used for buildings up
to 20 metres; for buildings above this height the “rolling
Introduction sphere” method is used.
If correctly installed, fitting a lightning protection system
Down Conductors
(LPS) will minimise the risk of damage to structures and
injury to personnel by conducting high discharge currents The recommended spacing between down conductors
safely to earth. Protection against the secondary effects of varies according to risk and is detailed in internationally
lightning to internal electrical equipment, known as transient recognised European and British lightning protection
over voltage protection is achieved by the use of transient standards. E.g., conductors may be spaced at 20 metres for
over voltage protectors; this is in addition to the LPS. some buildings but this distance could be reduced to 10
metres for tall or high risk buildings. Down conductors
A LPS cannot protect against over voltage transients. Over
should be positioned as evenly as possible around the
voltage transient protectors cannot protect against direct
outside walls of the structure, starting from the corners.
lightning strikes. Both are required for total structural and
equipment protection. Minimum distances must be maintained to prevent side
flashing. Re-entrant loops are also to be avoided.
Lightning Protection Strategy
Earth Terminations & Networks
The normal strategy in
achieving protection is to The information contained in this section primarily refers to
capture the lightning at a Lightning Protection Earthing Systems (LPS) and does not
preferred point by the use of detail all earthing requirements for electrical wiring, although
air terminations and there are some similarities. Please refer to the IEE 16th
conducting it via low edition wiring regulations for more details.
impedance down conductors An earth electrode should be connected to each down
and earth electrodes to a low conductor of a lightning protection system (LPS). Earth rods
resistance earth of less than may need an earth inspection housing for periodic testing of
ten ohms. Air terminations earth resistance.
and down conductors are
Earth rods are used in most applications and are driven into
spaced at regular intervals to
the ground as close as is practicable to the structure and the
form a mesh of conductors around the perimeter of the
down conductor. They are normally spaced at specified
building and roof, known as a Faraday cage, and are joined
intervals corresponding to the spacing on the down
together by specially produced clamps and fixings or
conductors.
welding.
Resistance to Earth
Lightning Protection System Design Considerations
For an LPS the earth termination network as a whole should
An LPS is designed according to geographical location, local
have a combined resistance of not more than ten ohms,
terrain, soil conditions, size and height of building, type of
before bonding to building metalwork. However, the
material used in construction, type of material stored in the
maximum resistance value for earthing systems is
building, use of building and is based on established
application specific.
standards for risk assessment.

Air Termination Networks

The recommended spacing between conductors varies
according to risk and is detailed in internationally recognised
European and British lightning protection standards. E.g., a
mesh of conductors of 10 by 20 metres is considered
sufficient for most applications; however, a high risk structure
may require a 10 by 10 mesh.
There are two methods used to calculate the area
immediately around a building protected by the air

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 3

LIGHTNING PROTECTION INTRODUCTION

A single earth rod may not achieve the required resistance clamps are tight and well
figure and several may be need to be fitted to achieve this; protected from corrosion, which
their combined resistance is proportional to the reciprocal of can occur if dissimilar metals are
the individual rod resistances to earth. This rule holds true as joined. Ideally there should be as
long as each rod is situated outside the resistance area of few joints as possible in an LPS
any other. To ensure this is the case, it is generally accepted design.
that the minimum spacing between rods should not be less
than their driven length. Maintenance & Life of an LPS
The expected number of rods It is important to properly maintain
required to obtain a particular an LPS to ensure it retains its
resistance value, e.g. ten ohms, can ability to conduct the same current carrying capacity as it did
be roughly calculated. To do this when it was originally installed. Earth rod resistances should
the soil resistivity needs to be taken be regularly checked. Corrosion and fault currents can cause
into consideration. A soil resistivity high resistance joints leading to overheating. However, if an
test will need to be performed. LPS is correctly installed and maintained it should last for
many years.
There are several methods used to
obtain a lower resistance value: The information contained in this section is intended as a
guide and should not be used to perform designs. A.N.Wallis
More rods can be driven. does not accept responsibility for errors or omissions.
Rods can be driven deeper. Detailed information on LPS design is contained in
Rods of a larger diameter can be used. internationally recognised European
and British LPS standards.
Ring conductors connecting rods together
underground can be used.
Where deep driving is not possible shorter rods with a larger
diameter can be used; copper earth mats and earth plates
can be used in place of earth rods.
A “crow’s foot” configuration can be used where parallel
connection is not possible.
Where high resistance soil conditions are a problem soil
conditioning agents can be used to backfill rod holes.
Conductive concrete can be used to backfill an earth mat.
Both effectively increase an electrodes cross sectional area
and therefore reduce its resistance to earth.
The international standards also specify the recommended
materials used for all earthing conductors and their
dimensions.

Equipotential Bonding
It is common practice to use the buildings natural structural
steelwork and bonding it to the LPS to further improve its
ability to conduct lightning and fault currents to earth; prior
permission may be required.

Joints
Joints should be mechanically effective, all joints other than
welded ones are a potential discontinuity, and care should
be taken to ensure contact surfaces are clean and that fixing

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 4

LIGHTNING PROTECTION FLAT TAPE SYSTEM

ATC 120M
Taper Pointed Air Rods
Air rods form an important part of the air termination network of a
lightning protection system. All of our air rods are supplied with a
locknut enabling the rod to be locked tight against the conductor.
ATC 220M Please see pages 45 - 47 for further information on our range of
saddles, brackets and couplings.
Copper Air Rods
Thread L L1 Unit Pack Part
Size mm mm Weight Quantity Number
kg
300 0.53 ATC 112M
500 0.85 ATC 120M
M16 1000 41 1.70 5 ATC 139M
1500 2.59 ATC 160M
2000 3.47 ATC 179M
300 0.80 ATC 212M
ATA 120M
500 1.34 ATC 220M
M20 1000 41 2.68 5 ATC 239M
1500 4.02 ATC 260M
2000 5.36 ATC 279M
ATA 112M
Material: Copper.

Aluminium Air Rods

Thread L L1 Unit Pack Part
Size mm mm Weight Quantity Number
kg
300 0.18 ATA 112M
500 0.29 ATA 120M
M16 1000 41 0.57 5 ATA 139M
1500 0.98 ATA 160M
2000 1.09 ATA 179M

Material: Aluminium.

Thread Size

L1

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 5

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Multi-Point
Used in conjunction with the taper pointed copper air rods.
Air H W Unit Pack Part
Rod Ø mm mm Weight Quantity Number
mm kg
16 & 20 156 72 0.30 5 MPC 16

Material: Gunmetal base with Copper spikes.

Light Duty Air Rod Saddles

Light duty saddles are used to support air rods on flat roof surfaces.
For use with Copper Air Rods
Thread L H Unit Pack Part ASGL 16M
Size mm mm Weight Quantity Number
kg
M16 ASGL 16M
101 37 0.43 5
M20 ASGL 20M

Material: Gunmetal.

For use with Aluminium Air Rods

Thread L H Unit Pack Part
Size mm mm Weight Quantity Number ASAL 16M
kg
M16 101 37 0.15 5 ASAL 16M
Material: Aluminium.

L
Thread
Size

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 6

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Air Rod Ridge Saddles

Ridge saddles are used to support air rods on roof ridges.

ASGR 16M For use with Copper Air Rods

Thread L H Unit Pack Part
Size mm mm Weight Quantity Number
kg
M16 137 34 0.70 5 ASGR 16M

Material: Gunmetal.

For use with Aluminium Air Rods

ASAR 16M Thread L H Unit Pack Part

Size mm mm Weight Quantity Number
kg
M16 137 34 0.70 5 ASAR 16M

Material: Aluminium.
L

Thread
Size

Flat Air Rod Saddles

Flat saddles are used to support air rods on flat roof surfaces.
For use with Copper Air Rods
ASGF 16M
Thread L H Unit Pack Part
Size mm mm Weight Quantity Number
kg
M16 137 40 0.60 5 ASGF 16M

Material: Gunmetal.

For use with Aluminium Air Rods

ASAF 16M Thread L H Unit Pack Part

Size mm mm Weight Quantity Number
kg
M16 137 40 0.20 5 ASAF 16M

Material: Aluminium.

Thread
Size

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 7

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Side Mounting Air Rod Brackets

These brackets provide a 75mm projection from the building face and
are used where it is not possible to fit a saddle onto the building roof.
The brackets are used in conjunction with the rod to tape coupling
used to secure the flat tape to the air rod.
For use with Copper Air Rods
Rod Ø L W Unit Pack Part
mm mm mm Weight Quantity Number
kg
16 0.39 AMBG 16
97 120 5
20 0.43 AMBG 20 AMBG 16
AMBA 16
Material: Gunmetal.

For use with Aluminium Air Rods

Rod Ø L W Unit Pack Part
mm mm mm Weight Quantity Number
kg
16 97 120 0.12 5 AMBA 16
Material: Aluminium.
W W

Rod to Tape Couplings

Enables the flat tape to be connected to the air rod. Used in conjunction
with the side mounting air rod brackets.
For use with Copper Air Rods
Thread L D Unit Pack Part
Size mm mm Weight Quantity Number
kg
M16 AOG 16M
80 40 0.22 5
M20 AOG 20M
AOG 16M
Material: Gunmetal.
AOA 16M
For use with Aluminium Air Rods
Thread L D Unit Pack Part
Size mm mm Weight Quantity Number
kg
M16 80 40 0.10 5 AOA 16M

Material: Aluminium.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 8

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Metallic DC Clips
DCB 253
Metallic DC clips secure the flat tape conductor to the building surface.
Fix using countersunk woodscrew 11/2” x No. 10 and No. 10 wall plug.
For use with Bare Copper Tapes
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
DGG 383
20 x 3 50 10 0.06 50 DCG 203
25 x 3 50 10 0.06 50 DCB 253
25 x 4 50 10 0.06 50 DCG 254
25 x 6 50 12 0.06 50 DCG 256
31 x 3 60 10 0.08 25 DCG 313
DCB 506 31 x 6 60 13 0.09 25 DCG 316
38 x 3 64 20 10 0.08 25 DCG 383
38 x 5 64 13 0.10 25 DCG 385
38 x 6 64 13 0.10 25 DCG 386
50 x 3 80 10 0.10 25 DCG 503

DCA 253 50 x 4 80 11 0.10 25 DCG 504

50 x 6 80 14 0.14 25 DCB 506
50 x 8 80 14 0.14 25 DCG 508
Material: Gunmetal.

For use with PVC Covered Copper Tapes

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 55 14 0.06 DGP 253
25 x 6 58 20 18 0.11 25 DGP 256
50 x 6 91 19 0.20 DGP 506
Material: Gunmetal.

For use with Lead Covered Copper Tape

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 77 27 25 0.34 25 DCL 253
Material: Phosphor Bronze.

L For use with Bare Aluminium Tapes

D
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
W mm kg
25 x 3 55 10 0.02 DCA 253
H 25 x 6 50 20 13 0.03 25 DCA 256
50 x 6 80 16 0.04 DCA 506
L
Material: Aluminium.

For use with PVC Covered Aluminium Tapes

W Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 55 20 0.03 DAP 253
20 25
L 50 x 6 85 23 0.04 DAP 506
Material: Aluminium.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 9

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Non-Metallic DC Clips
This one-piece clip, with integral hinged lid, means no lost or dropped
lids. The clips are UV stabilised to prevent degradation from sunlight
and are non-brittle to protect against cold weather.
Fix using countersunk woodscrew 11/2” x No. 10 and No. 10 wall plug.
For use with Bare Copper Tapes
Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg NP 253 BL
20 x 3 55 18 16 NM 203 B
25 x 3 50 18 16 Brown 0.01 100 NM 253 B
50 x 6 80 25 26 NM 506 B*

Material: Polypropylene.
* NM506B is a two-piece clip
NP 253 W

For use with Bare Aluminium Tapes

Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
20 x 3 NM 203 G NP 253 G
50 18 16 Grey 0.01 100
25 x 3 NM 253 G
Material: Polypropylene.

For use with PVC Covered Copper & Aluminium Tapes

Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
Brown NP 253 B NP 253 GR
Black NP 253 BL
Grey NP 253 G
25 x 3 50 18 16 0.01 100
Green NP 253 GR
Stone NP 253 S
White NP 253 W NP 253 B

Material: Polypropylene.

NP 253 S

L W

W H

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LIGHTNING PROTECTION FLAT TAPE SYSTEM

Non-Metallic DC Clips with Plug

These one-piece clips have an integral fixing plug for ease of installation.
The clips are UV stabilised to prevent degradation from sunlight and are
non-brittle to protect against cold weather.
Fix using countersunk woodscrew 11/2” x No. 10.
NPP 253 BL For use with Bare Copper Tapes
Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
20 x 3 NMP 203 B
50 18 16 Brown 0.01 100
25 x 3 NMP 253 B
NPP 253 W Material: Polypropylene.

For use with Bare Aluminium Tapes

Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
NPP 253 G mm kg
20 x 3 NMP 203 G
50 18 16 Grey 0.01 100
25 x 3 NMP 253 G
Material: Polypropylene.

For use with PVC Covered Copper & Aluminium Tapes

NPP 253 GR
Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
Brown NPP 253 B
Black NPP 253 BL
NPP 253 B
Grey NPP 253 G
25 x 3 50 18 16 0.01 100
Green NPP 253 GR
Stone NPP 253 S
White NPP 253 W
Material: Polypropylene.

NPP 253 S

L W

H W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 11

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Tape Clips
Wallis tape clips hold the flat tape conductor flush to the building surface.
Fix using countersunk woodscrews 11/2” x No. 10 and No. 10 wall plugs.
For use with Bare Copper Tapes
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg MTB 253
20 x 3 68 7 0.03 MTB 203
25 x 3 70 20 7 0.03 50 MTB 253
50 x 6 73 8 0.05 MTB 506
Material: Copper.

For use with PVC Covered Copper Tapes

MPB 253
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 70 20 7 0.03 50 MPB 253
Material: Copper.

For use with Bare Aluminium Tapes

Conductor L W H Unit Pack Part MTA 253
Size mm mm mm Weight Quantity Number
mm kg
20 x 3 68 MTA 203
20 7 0.01 50
25 x 3 70 MTA 253

Material: Aluminium.

For use with PVC Covered Aluminium Tapes MAP 253

Conductor L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm kg
25 x 3 70 20 7 0.01 50 MAP 253
Material: Aluminium.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 12

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Slate Holdfasts
Wallis slate holdfasts provide a method for fixing the tape above the
roof tiles without any drilling.
The aluminium tail slides underneath the tile and is fixed to the wooden
beam with a nail, the non-metallic DC clip then protrudes from under
HSAL 253BL the tile and offers a fixing for the tape.
For use with Bare Copper & Aluminium Tapes
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown HSAL 253 BM
25 x 3 300 50 16 0.04 50
Grey HSAL 253 GM

Material: Polypropylene clip with Aluminium tail.

HSAL 253G
For use with PVC Covered Copper & Aluminium Tapes
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown HSAL 253 B
Black HSAL 253 BL
25 x 3 300 50 16 Grey 0.04 50 HSAL 253 G
HSAL 253B Stone HSAL 253 S
White HSAL 253 W

Material: Polypropylene clip with Aluminium tail.

HSAL 253S

HSAL 253W

W
L
H

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 13

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Weldable DC Clips
Comprises a weldable base assembled with a non-metallic DC clip. For
use on PVC roofing membranes. See page 55 for details of Universal
Welding Solvent.
For use with Bare Tape
Conductor D H Clip Unit Pack Part
Size mm mm Colour Weight Quantity Number
mm kg
25 x 3 65 23 Grey 0.03 50 WDC 080

Material: PVC base with Polypropylene clip.

For use with PVC Covered Tapes WDC 080

Conductor D H Clip Unit Pack Part

Size mm mm Colour Weight Quantity Number
mm kg
Black WDC 120
25 x 3 65 23 0.03 50
Grey WDC 140

Material: PVC base with Polypropylene clip.

WDC 120

H D

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 14

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Adhesive DC Clips
Comprises an adhesive base assembled with a non-metallic DC clip.
For use on surfaces other than PVC roofing. See page 55 for details of
Surface Primer.

For use with Bare Copper & Aluminium Tapes

Conductor D H Clip Unit Pack Part

Size mm mm Colour Weight Quantity Number
mm kg
Brown ADC 060
25 x 3 65 23 0.03 50
Grey ADC 080
ADC 080
Material: Polycarbonate base with Polypropylene clip.

For use with PVC Covered Copper & Aluminium Tapes

Conductor D H Clip Unit Pack Part
Size mm mm Colour Weight Quantity Number
mm kg
ADC 060 Brown ADC 100
Black ADC 120
25 x 3 65 23 Grey 0.03 50 ADC 140
Stone ADC 160
White ADC 180

Material: Polycarbonate base with Polypropylene clip.

ADC 180

ADC 120

ADC 160

H D

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 15

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Universal Welding Solvent, Cleaning Solution

& Surface Primer
Type Unit Pack Part
Weight Quantity Number
kg
Universal Welding Solvent 500ml spray
applicator for use with weldable DC clips 0.57 UWS 001
Sufficient for application of approx. 200 clips
Cleaning Solution (Acetone)
500ml spray applicator for cleaning 0.62 1 CSA 001
lacquered roofing membranes
Surface Primer 250ml spray applicator
for use with adhesive DC clips 0.24 PRIMER
Sufficient for application of approx. 500 clips

CoSHH datasheets are available on request.

PRIMER

UWS 001

CSA 001

Bitumen Felt DC Clips

For use on bitumen felt roofing only.
For use with Bare Copper & Aluminium Tapes
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown BDC 060
25 x 3 100 100 23 0.06 50
Grey BDC 080

Material: Bitumen Felt base with Polypropylene clip.

For use with PVC Covered Copper & Aluminium Tapes

BDC 060
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown BDC 100
Black BDC 120
Grey BDC 140
25 x 3 100 100 23 0.06 50
Stone BDC 160
White BDC 180
Green BDC 200

Material: Bitumen Felt base with Polypropylene clip.

L
H

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LIGHTNING PROTECTION FLAT TAPE SYSTEM

Glazing Bar Holdfasts

Originally designed to be used on glazing units but can be installed
wherever conductor has to be fixed onto a narrow flange. The holdfast
is assembled with a fixing screw for use with a metallic or non-metallic
DC clip.
For use with Copper Tapes
HGG 253 L W H Unit Pack Part
mm mm mm Weight Quantity Number
kg
35 22 20 0.12 10 HGG 253
Material: Gunmetal.

For use with Aluminium Tapes

HGA 253
L W H Unit Pack Part
mm mm mm Weight Quantity Number
kg
35 22 20 0.04 10 HGA 253
Material: Aluminium.

H W

Back Plate Holdfasts

Designed to be used where it is necessary to hold the conductor away
from the building surface. The holdfast is assembled with a fixing screw
for use with a metallic or non-metallic DC clip.
For use with Copper Tapes
L D Unit Pack Part
HBG 001
mm mm Weight Quantity Number
kg
74 63 0.33 5 HBG 001
Material: Gunmetal.
For use with Aluminium Tapes
L D Unit Pack Part
mm mm Weight Quantity Number
kg
74 63 0.15 5 HBA 001
Material: Aluminium.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 17

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Square Tape Clamps

These Wallis four-way connectors are suitable for making cross, straight
through or tee joints in flat tape. The base has a countersunk hole in the
middle for securing the clamp to the building surface and the lid is fixed
by means of four screws.
Fix using countersunk woodscrew 11/2” x No. 10 and No. 10 wall plug.
JG253
For use with Bare Copper Tapes
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 50 50 13 0.15 25 JG 253
25 x 6 50 50 20 0.25 25 JG 256
31 x 3 60 60 14 0.22 25 JG 313 JG 506
38 x 6 71 71 22 0.59 25 JG 386
50 x 3 80 80 16 0.50 10 JG 503
50 x 6 79 79 22 0.52 10 JG 506
Material: Gunmetal.

For use with Lead Covered Copper Tape

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg JPB 253L

25 x 3 70 70 25 0.86 25 JPB 253 L

Material: Phosphor Bronze.

For use with Bare Aluminium Tape

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg JA 253

25 x 3 50 50 13 0.07 25 JA 253
Material: Aluminium.

W W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 18

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Oblong Junction Clamps

Designed to join a range of tape sizes in a straight through position. In
many applications the clamp enables tapes to be overlapped and
secured by the two set screws.
For use with Bare Copper Tapes
Maximum L W H Unit Pack Part
Conductor Size mm mm mm Weight Quantity Number
JGO 253 W mm kg
26 x 8 68 40 23 0.34 JGO 253 W
10
51 x 10 90 63 26 0.58 JGO 506 W
Material: Gunmetal.

For use with Lead Covered Copper Tape

Maximum L W H Unit Pack Part
Conductor Size mm mm mm Weight Quantity Number
mm kg
26 x 8 90 45 24 0.34 10 JPBO 253 L
JGO 506 W
Material: Phosphor Bronze.

For use with Bare Aluminium Tape

Maximum L W H Unit Pack Part
Conductor Size mm mm mm Weight Quantity Number
mm kg
26 x 8 68 40 23 0.11 10 JAO 253
Material: Aluminium.

JPBO 253 L

JAO 253

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 19

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Plate Type Test Clamps

This Wallis clamp is used to form a disconnecting joint between the
down conductor and earthing system.
There are two wall fixing holes on the bottom plate. Fix using JPA 253
countersunk woodscrews 11/2” x No. 10 and No. 10 wall plugs.
For use with Copper Tapes
Maximum D H Unit Pack Part
Conductor mm mm Weight Quantity Number
Size kg
mm
26 x 15 70 38 0.40 5 JPG 253
Material: Gunmetal.
For use with Aluminium Tapes JPG 253
Maximum D H Unit Pack Part
Conductor mm mm Weight Quantity Number
Size kg
mm
26 x 15 70 38 0.10 5 JPA 253

Material: Aluminium.

Screw Down Test Clamp

The screw down test clamp allows easy access to copper conductors
where frequent inspection and testing may be necessary.
For use with Copper Tapes
Maximum D Unit Pack Part
Conductor Size mm Weight Quantity Number
mm kg
26 x 8 61 0.72 5 JSG 253

Material: Gunmetal.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 20

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Bimetallic Connectors
These connectors are used to join aluminium and copper tapes
together. They are a neat and practical jointing method without the
need for tinning, riveting or wrapping the joint.
Fix using countersunk woodscrew 11/2” x No. 10 wall plug.

Conductor Material L W H Unit Pack Part

Size Type mm mm mm Weight Quantity Number
mm kg
Aluminium &
Copper 98 29 25 0.20 BIM 253
25 x 3 10
BSS 253
Stainless Steel 76 21 20 0.16 BSS 253

BIM 253

L W

‘B’ Bonds
This Wallis ‘B’ bond is used for bonding aluminium and copper tapes to
flat metal surfaces.
For use with Copper Tapes

Conductor L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm kg
25 x 3 35 35 10 0.03 10 BBG 253 SS

BBG 253 SS Material: Gunmetal with M10 x 35mm Stainless Steel Set Screw.

For use with Aluminium Tapes

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 35 35 10 0.01 10 BBA 253

Material: Aluminium with M10 x 35mm Stainless Steel Set Screw.

BBA 253

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 21

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Watermain Pipe Bond

Designed to bond large diameter metallic pipes into the earthing and
lightning protection systems.
For use with Bare Copper Tapes
Maximum L W Unit Pack Part
Conductor mm mm Weight Quantity Number
Width kg
mm
26 45 36 0.21 10 BWG 253

Material: Gunmetal with M10 x 35mm Phosphor Bronze Set Screw.

W L

Rainwater Pipe Bond

This pipe bond can be used on any application where tape can be
wrapped around circular objects such as pipes or rails.
For use with Bare Copper Tapes
Maximum L W H Unit Pack Part
Conductor mm mm mm Weight Quantity Number
Width kg
mm BRG 253
26 32 32 16 0.20 10 BRG 253

Material: Gunmetal with M10 x 40mm Stainless Steel Set Screw.

For use with Bare Aluminium Tapes

Maximum L W H Unit Pack Part
Conductor mm mm mm Weight Quantity Number
Width kg
mm
BRA 253
26 32 32 16 0.10 10 BRA 253

Material: Aluminium with M10 x 40mm Stainless Steel Set Screw.

H
W

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Air Rods
These air rods are used as part of the lightning protection system. They
are manufactured from 10mm diameter rod and are supplied with a
locknut.
Copper Air Rods
Thread L Unit Pack Part
Size mm Weight Quantity Number
kg
500 0.35 ARC 102
M10 5
ARC 102 1000 0.70 ARC 105
Material: Copper.

Aluminium Air Rods

ARA 102
Thread L Unit Pack Part
Size mm Weight Quantity Number
kg
500 0.11 ARA 102
M10 5
1000 0.22 ARA 105
Material: Aluminium.

Thread
Size

Multi-Purpose Air Rod Saddles

These saddles can be installed horizontally on roofs or vertically on
walls or parapets and are used in conjunction with the air rods shown
above. The saddles are suitable for use with 8mm diameter solid circular
conductor as well as 25 x 3mm flat tape.

UAG 253 For use with Copper Air Rods

Thread L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
kg
M10 54 54 38 0.30 5 UAG 253

Material: Gunmetal.
For use with Aluminium Air Rods
Thread L W H Unit Pack Part
UAA 253 Size mm mm mm Weight Quantity Number
kg
M10 54 54 38 0.10 5 UAA 253

Material: Aluminium.

W
H

L L

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 23

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Slate Holdfasts
Wallis slate holdfasts provide a method of fixing solid circular conductor
above roof tiles without any drilling.
The aluminium tail slides underneath the tile and is fixed to the wooden
beam with a nail, the push-in roof clip then protrudes from under the
tile and offers a fixing for the conductor.
For use with Bare Solid Circular Conductors
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown HA 08 B
8 320 18 14 0.04 50
Grey HA 08 G

Material: Polypropylene clip with Aluminium tail.

For use with PVC Covered Solid Circular Conductors HA 08 B

Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown HA 10 B
Black HA 10 BL
8 320 18 14 0.04 50
Grey HA 10 G
Stone HA 10 S HA 10 BL
White HA 10 W

Material: Polypropylene clip with Aluminium tail.

HA 10 G

HA 10 S

HA 10 W

W
H

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

One Hole Conductor Clips

One hole conductor clips provide an easy method of fixing copper and
aluminium conductors to surfaces.
Fix using round head woodscrew 11/2” x No. 10 and No. 10 wall plug
For use with Solid Circular Copper Conductors
PCC 001
Conductor L W H Unit Pack Part
Size & mm mm mm Weight Quantity Number
Type kg
8mm Bare 31 12 12 PCC 001
0.01 50
8mm PVC 41 20 15 PCC 002

Material: Copper.

PCA 001
For use with Solid Circular Aluminium Conductors
Conductor L W H Unit Pack Part
Size & mm mm mm Weight Quantity Number
Type kg
8mm Bare 31 12 12 PCA 001
0.01 50
8mm PVC 41 20 15 PCA 002

Material: Aluminium.

L W

Metallic Conductor Clips

Metallic conductor clips secure the solid circular conductor to the
building surface. The larger sizes can also be used to support the
10mm air rods shown on page 62. Fix using countersunk
woodscrew 11/2” x No. 10 and No. 10 wall plug.
DCG 810
For use with Solid Circular Copper Conductors
Conductor L W H Unit Pack Part
Size & mm mm mm Weight Quantity Number
Type kg
8mm Bare DCG 810
48 17 20 0.06 25
8mm PVC DCG 815

Material: Gunmetal.
DCA 810 For use with Solid Circular Aluminium Conductors
Conductor Unit
Size & L W H Weight Pack Part
Type mm mm mm kg Quantity Number

8mm Bare DCA 810

48 17 20 0.03 25
8mm PVC DCA 815

Material: Aluminium.

H W

L
L

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 25

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Non-Metallic Down Conductor Clips

A one-piece fold over clip designed for easy installation of solid circular
conductor. The clips are UV stabilised to prevent degradation from
sunlight and are non-brittle to protect against cold weather.
For use with Bare Solid Circular Conductors
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg CP 08 BL CM 08 B
Brown CM 08 B
8 34 23 33 0.01 100
Grey CM 08 G
Material: Polypropylene.
For use with PVC Covered Solid Circular Conductors
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg CP 08 S

Brown CP 08 B
Black CP 08 BL
8 34 23 33 Grey 0.01 100 CP 08 G
Stone CP 08 S
White CP 08 W

Material: Polypropylene. L

H
W

Push-in Roof Conductor Clips RM 08 B

A one-piece single screw fixing clip designed for easy installation of solid
circular conductors. The clips are UV stabilised to prevent degradation
from sunlight and are non-brittle to protect against cold weather.
For use with Bare Solid Circular Conductors
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown RM 08 B RP 08 G
8 29 18 14 0.01 100
Grey RM 08 G
Material: Polypropylene.
For use with PVC Covered Solid Circular Conductors RP 08 W
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown RP 08 B
Black RP 08 BL
8 29 18 14 Grey 0.01 100 RP 08 G
Stone RP 08 S
White RP 08 W

Material: Polypropylene. W

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

‘MV’ Clamps
MVG 08
These Wallis four-way connectors are suitable for crossing over, making
straight joints and tee connections in solid circular conductor.
For use with Bare Solid Circular Copper Conductor
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 40 40 18 0.05 10 MVG 08

MVA 08 Material: Copper.

For use with Bare Solid Circular Aluminium Conductor

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 40 40 18 0.01 10 MVA 08

Material: Aluminium.

‘T’ Connector Clamps

This purpose-designed ‘T’ connector clamp is ideal for connecting the
roof network to the down conductors of an 8mm solid circular lightning
TCG 08 protection system.

For use with Bare Solid Circular Copper Conductor

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 45 45 19 0.11 10 TCG 08
TCA 08 Material: Gunmetal.
For use with Bare Solid Circular Aluminium Conductor
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 44 25 20 0.06 10 TCA 08

Material: Stainless Steel.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 27

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Interface Test Clamps

This Wallis clamp is used for connecting flat tape to solid circular
conductor, for example where the lightning protection system has been
designed in 8mm copper conductor but the connection to the earth rod
is made using 25 x 3mm copper tape.
It will also serve for making through joints and tee connections in 8mm
solid circular conductor.
For use with Bare Copper Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg JYG 08
8 & 25 x 3 70 34 15 0.25 25 JYG 08
JYA 08
Material: Gunmetal.
For use with Bare Aluminium Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 & 25 x 3 70 34 15 0.09 25 JYA 08

Material: Aluminium.
H

Solid Circular to Tape Connectors

This Wallis four-way connector is suitable for crossing over flat tape and JOM 253
solid circular conductor. It will also serve for making straight through
joints and tee connections.
For use with Bare Copper Conductors
Conductor L W H Unit Pack Part
Sizes mm mm mm Weight Quantity Number
mm kg JOA 253

8 & 25 x 3 52 52 14 0.28 25 JOM 253

Material: Gunmetal.

For use with Bare Aluminium Conductors

Conductor L W H Unit Pack Part
Sizes mm mm mm Weight Quantity Number
mm kg
8 & 25 x 3 52 52 14 0.09 25 JOA 253
Material: Aluminium.

H
W

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Metalwork Bonding Clamps

These clamps are designed for bonding 8mm solid circular conductors
onto metal surfaces.
For use with Bare Solid Circular Copper Conductor
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 82 40 25 0.14 10 MBG 08

Material: Copper.

For use with Bare Solid Circular Aluminium Conductor

MBG 08 Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
MBA 08 8 82 40 25 0.09 10 MBA 08

Material: Aluminium.

Bimetallic Connectors
BIM 25308
These connectors are used to join 8mm aluminium and copper solid
circular conductors together. They are a neat and practical jointing
method without the need for tinning, riveting or wrapping the joint.

Conductor Type L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm kg
Aluminium &
Copper 78 28 28 0.25 BIM 08
8 10
BIM 08 Stainless Steel 71 22 19 0.09 BSS 08

We also offer a connector suitable for joining 8mm aluminium solid

circular conductor to 25 x 3mm copper tape.

Conductor Type L W H Unit Pack Part

Sizes mm mm mm Weight Quantity Number
mm kg
8 to Aluminium &
Copper 78 28 29 0.20 10 BIM 25308
25 x 3

H L
H

L W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 29

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Rainwater Pipe Bonds

This pipe bond can be used on any application where the perforated
tape can be wrapped around circular objects such as pipes or rails etc.
For use with Bare Solid Circular Copper Conductor
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 55 32 17 0.37 5 BRG 08

Material: Gunmetal with Perforated Copper Tail.

For use with Bare Solid Circular Aluminium Conductor

BRG 08
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 51 31 16 0.09 5 BRA 08

Material: Aluminium with Perforated Steel Tail.

W
H

Circular ‘B’ Bonds

This Wallis bond is used for bonding 8mm solid circular conductors to BBG 08
flat metal surfaces. BBA 08

For use with Bare Solid Circular Copper Conductor

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 52 33 18 0.14 10 BBG 08

Material: Gunmetal.

For use with Bare Solid Circular Aluminium Conductor

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 52 33 18 0.09 10 BBA 08

Material: Aluminium.

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Tower Earth Clamps

These single-plate tower earth clamps are used for bonding copper and
aluminium conductors onto steel surfaces. The clamp is fixed by drilling
a hole in the steelwork and securing with the set screw provided.
BTC 008
For use with Bare Solid Circular Copper Conductor
Conductor L W H Set Unit Pack Part
Size mm mm mm Screw Weight Quantity Number
mm kg
8 34 23 33 M10 x 50mm 0.09 10 BTC 008
Material: Gunmetal.

For use with Bare Solid Circular Aluminium Conductor

Conductor L W H Set Unit Pack Part
Size mm mm mm Screw Weight Quantity Number
mm kg
8 40 22 12 M10 x 50mm 0.05 10 BTA 008
Material: Aluminium.

Multi-Purpose ‘B’ Bonds

This Wallis Multi-Purpose ‘B’ Bond can be used for bonding both 25 x 3mm
flat tape and 8mm diameter solid circular conductor to flat metal surfaces.
For use with Bare Copper Conductors
BBG 25308 Conductor L W H Set Unit Pack Part
Sizes mm mm mm Screw Weight Quantity Number
mm kg
8 & 25 x 3 34 34 13 M8 x 25mm 0.09 25 BBG 25308
Material: Gunmetal.

For use with Bare Aluminium Conductors

Conductor L W H Set Unit Pack Part
Sizes mm mm mm Screw Weight Quantity Number
BBA 25308 mm kg
8 & 25 x 3 34 34 13 M8 x 25mm 0.04 25 BBA 25308
Material: Aluminium.

W
H

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 31

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Pyramid Holdfast
The Pyramid Holdfast is designed to support 8mm diameter bare solid
circular conductors on flat roofs.
Manufactured from black weather-resistant plastic and filled with frost-
proof concrete. The lip around the base enables the holdfast to be
installed onto bitumen type roofs.
For use with Bare Solid Circular Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 180 130 70 1.00 12 HPY 008
Material: Plastic filled with Concrete.

W L

Circular Conductor Shoes

Used to bond 8mm bare solid circular conductors to metal surfaces.

For use with Bare Solid Circular Copper Conductor

Conductor Palm L W H Set Unit Pack Part GCS 008
Size Hole Ø mm mm mm Screws Weight Quantity Number
mm mm kg
8 12 61 23 25 M6 x 12mm 0.10 25 GCS 008
Material: Gunmetal.

For use with Bare Solid Circular Aluminium Conductor

Conductor Palm L W H Set Unit Pack Part
Size Hole Ø mm mm mm Screws Weight Quantity Number ACS 008
mm mm kg
8 12 61 23 25 M6 x 12mm 0.04 25 ACS 008
Material: Aluminium.

H W

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LIGHTNING PROTECTION CABLE & WIRE SYSTEM

ATC 120M Taper Pointed Air Rods

Air rods form an important part of the air termination network of a
lightning protection system. All of our copper air rods are supplied with
a brass locknut enabling the rod to be locked tight against the
ATC 220M conductor. Please see pages 73 - 74 for further information on our range
of saddles, brackets and couplings.
Thread L L1 Unit Pack Part
Size mm mm Weight Quantity Number
kg
300 0.53 ATC 112M
500 0.85 ATC 120M
M16 1000 41 1.70 5 ATC 139M
1500 2.59 ATC 160M
2000 3.47 ATC 179M
Material: Copper.

Thread Size

L1

Multi-Point
Used in conjunction with the taper pointed copper air rods.
Air H W Unit Pack Part
Rod Ø mm mm Weight Quantity Number
mm kg
16 156 72 0.30 5 MPC 16

Material: Gunmetal base with Copper spikes.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 33

LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Side Mounting Air Rod Brackets

These brackets provide a 75mm projection from the building face and
are used where it is not possible to fit a saddle onto the building roof.
The brackets are used in conjunction with the rod to cable coupling
used to secure the cable to the air rod.
For use with Copper Air Rods
Rod Ø L W Unit Pack Part
mm mm mm Weight Quantity Number
kg
16 97 120 0.39 5 AMBG 16
AMBG 16
Material: Gunmetal.

W W

Rod to Cable Couplings

Enables the stranded cable to be connected to the air rod. Used in
conjunction with the side mounting air rod brackets.

Conductor Thread L D Unit Pack Part

Size Size mm mm Weight Quantity Number
mm2 kg
50 0.25 AOG 050
70 M16 80 40 0.25 5 AOG 070
95 0.22 AOG 070

Material: Gunmetal.

AOG 070

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LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Air Rod Cable Saddles

These saddles are used to support the copper taper pointed air rods on
flat roof surfaces.

Conductor Thread L W H Unit Pack Part

Size Size mm mm mm Weight Quantity Number
mm2 kg
50 1.10 ASGF 050
70 M16 85 85 65 1.00 5 ASGF 070
95 0.90 ASGF 095
Material: Gunmetal.

ASGF 050

L
H

Cable Shoes
Used to bond stranded copper conductors to metal surfaces.

Conductor Palm L W H Set Unit Pack Part

Size Hole Ø mm mm mm Screws Weight Quantity Number
mm2 mm kg
50 23 25 0.10 GCS 050
70 12 61 25 27 M6 x 12mm 0.12 25 GCS 070
95 27 29 0.14 GCS 095
Material: Gunmetal.

H W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 35

LIGHTNING PROTECTION CABLE & WIRE SYSTEM

One Hole Cable Clips

Wallis one hole cable clips provide an easy method of fixing stranded
copper conductors to surfaces.
For use with Bare Stranded Copper Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm2 kg
6 10 10 5 0.01 PCC 006
10 10 10 5 0.01 PCC 010
PCC 010
16 15 10 5 0.01 PCC 016
25 15 10 8 0.01 PCC 025
35 18 10 8 0.01 PCC 035
50 18 10 10 0.01 PCC 050
70 22 10 10 0.01 50 PCC 070
95 22 10 13 0.01 PCC 095
120 25 15 15 0.01 PCC 120
150 25 15 15 0.02 PCC 150
185 30 15 20 0.02 PCC 185
240 30 20 20 0.02 PCC 240
300 35 20 25 0.02 PCC 300 PCC 050

Material: Copper.

For use with PVC Insulated Stranded Copper Conductors

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm2 kg
6 10 10 5 0.01 PCP 006
10 10 10 7 0.01 PCP 010
16 15 10 7 0.01 PCP 016
25 15 10 10 0.01 PCP 025
35 18 10 10 0.01 PCP 035
50 18 10 15 0.01 PCP 050 PCP 300

70 22 10 15 0.01 50 PCP 070

95 22 10 15 0.01 PCP 095
120 25 15 20 0.01 PCP 120
150 25 15 20 0.02 PCP 150
185 30 15 25 0.02 PCP 185
240 30 20 25 0.02 PCP 240
300 35 20 30 0.02 PCP 300

Material: Copper.

L W

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LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Metallic Cable Clips

Metallic cable clips secure the stranded copper conductor to the
building surface.
Fix using countersunk woodscrew 11/2” x No. 10 and No. 10 wall plug.
DCG 006
For use with Bare Stranded Copper Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm2 kg
6 35 15 12 0.03 50 DCG 006
10 35 15 12 0.03 50 DCG 010
16 35 15 15 0.04 50 DCG 016
25 35 15 15 0.04 50 DCG 025
35 46 17 17 0.05 50 DCG 035
DCG 025
50 46 17 17 0.05 50 DCG 050
70 46 17 19 0.06 25 DCG 070
95 46 17 21 0.06 25 DCG 095
120 60 20 23 0.07 25 DCG 120
150 60 20 24 0.07 25 DCG 150
185 60 20 26 0.08 25 DCG 185
240 60 20 29 0.09 25 DCG 240
300 60 20 31 0.09 25 DCG 300

Material: Gunmetal.
DCG 150
For use with PVC Insulated Stranded Copper Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm2 kg
6 35 15 14 0.03 50 DGP 006
10 35 15 14 0.03 50 DGP 010
16 35 15 17 0.04 50 DGP 016
25 35 15 17 0.04 50 DGP 025
35 46 17 19 0.05 50 DGP 035
50 46 17 19 0.05 50 DGP 050
70 46 17 21 0.06 25 DGP 070
95 46 17 23 0.06 25 DGP 095
120 60 20 25 0.07 25 DGP 120
150 60 20 26 0.07 25 DGP 150
185 60 20 28 0.08 25 DGP 185
240 60 20 31 0.09 25 DGP 240
300 60 20 33 0.09 25 DGP 300

Material: Gunmetal.

H W

L
L

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 37

LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Square Cable Clamps

These Wallis four-way connectors are suitable for making cross, straight
through or tee joints in stranded copper conductor.

Conductor L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm2 kg
50 50 50 30 0.30 JGC 050
70 53 53 33 0.27 25 JGC 070
95 55 55 35 0.22 JGC 095

Material: Gunmetal.

JGC 070

L
H

Universal Cable Connectors

This connector is suitable for joining cables in a test point as part of the
lightning protection system.
The base has a countersunk hole in the middle for securing the
connector to the building surface. Fix using countersunk woodscrew
11/2” x No. 10 and No. 10 wall plug.

Conductor L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm2 kg
50 0.15 UCC 050
70 71 21 19 0.17 25 UCC 070
95 0.19 UCC 095
UCC 070
Material: Naval Brass.

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LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Tower Earth Clamps

These double-plate tower earth clamps are used for bonding stranded
copper conductors onto steel surfaces. The clamp is fixed by drilling a
hole in the steelwork and securing with the set screw provided.

Conductor Range L W H Set Unit Pack Part

mm2 mm mm mm Screw Weight Qty Number
16 - 70 45 30 17 M10 x 50mm 0.12 BTC 070
10
70 - 120 48 35 22 M12 x 60mm 0.23 BTC 120
BTC 120
Material: Gunmetal.

BTC 070

H
L

Cable to Tape Connectors

This Wallis four-way connector is suitable for crossing over flat copper
tape and bare stranded copper cable. It will also serve for making
straight through joints and tee connections.

Cable Tape L W H Unit Pack Part

JOM 050
Size Size mm mm mm Weight Qty Number
mm2 mm
50 52 52 14 0.28 JOM 050
70 25 x 3 54 54 16 0.33 25 JOM 070
95 56 56 18 0.39 JOM 095

Material: Gunmetal.

H
H
W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 39

LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Strike Pads
This Wallis strike pad is used where it is not possible to install conductor
on the roof or side of a building. A typical application would be on the
roof of a car park where the conductor is laid underneath the tarmac SC 01
and the strike pads fitted on top. Supplied with a 40mm dowel and nut.
For use with Copper Conductor
D H Unit Pack Part
mm mm Weight Quantity Number
kg
122 40 0.60 5 SC 01
SA 01
Material: Gunmetal.

For use with Aluminium Conductor

D H Unit Pack Part
mm mm Weight Quantity Number
kg
122 40 0.20 5 SA 01
Material: Aluminium.

Interceptor Plates
These Wallis interceptor plates fit under the roof tile and are connected
into the lightning protection system. The square plate protrudes from the
tile and provides the interception point.
For use with Copper Conductor
L L1 W Unit Pack Part
mm mm mm Weight Quantity Number
kg
500 50 50 0.40 5 SPC

Material: Gunmetal. SPC

For use with Aluminium Conductor

L L1 W Unit Pack Part
mm mm mm Weight Quantity Number
SPA
kg
500 50 50 0.11 5 SPA

Material: Aluminium.
L1

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LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Oxide Inhibiting Compound

We recommend the use of an oxide inhibitor whenever aluminium
fittings are installed on a lightning protection system.
Penetrox electrical joint compound is a natural-petroleum based grease
that seals out oxygen and moisture on aluminium to aluminium and
aluminium to copper connections. It is not recommended for use with
rubber or polyethylene materials.

Description Unit Pack Part

Weight Quantity Number
kg
8oz plastic squeeze bottle 0.23 1 IC 08

CoSHH datasheet available on request.

Puddle Flanges
The puddle flange is used where the down conductor must pass
through a roof or waterproof membrane. The flats of the flange are
made waterproof by fixing with glue, concrete or specialist roofing
materials. See page 20 for our range of clamps suitable for use with
puddle flanges.
For use with Copper Conductor
L W Unit Pack Part
mm mm Weight Quantity Number
kg
600 150 x 150 1.68 1 PFC 01

PFC 01 Material: Copper.

For use with Aluminium Conductor
L W Unit Pack Part
mm mm Weight Quantity Number
kg
600 150 x 150 0.54 1 PFA 01

Material: Aluminium.

W L

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 41

LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Wallis Sealing Tape

A waterproof tape for wrapping joints to provide protection
against corrosion.

Description Unit Pack Part

Weight Quantity Number
kg
50mm wide x 10m length roll 0.75 1 DT 510

Silfos
Silfos is an alloy of silver, phosphorous and copper. It is used to braze
copper to copper in air without the use of flux.
Description Unit Pack Part
Weight Quantity Number
kg
50mm x 0.12 x 8m length roll 0.50 1 SILFOS

CoSHH datasheet available on request.

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LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Bitumen Felt Roll

Supplied in rolls for use on asphalt roofs.

Description Unit Pack Part

Weight Quantity Number
kg
100mm wide x 10m length roll 2.64 1 BFR 001

Green & Yellow PVC Insulating Tape

General-purpose insulating tape for electrical applications.

Description Unit Pack Part

Weight Quantity Number
kg
25mm wide x 33m length roll 0.14 1 GYT 2533

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 43

LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Tinmans Solder
Tinmans commercial grade solder supplied by the kilogram
(4 sticks).

Description Unit Pack Part

Weight Quantity Number
kg
Tinmans Solder (4 sticks) 1.00 1 TMS 004

Material: 60% Tin, 40% Lead.

Flux
A well-established and reliable multi-purpose flux paste. It is designed
for engineering and sheet metal work, and is equally as effective for
soldering of copper products. Use with Tinmans Solder.

Description Unit Pack Part

Weight Quantity Number
kg
Fluxite soldering paste 100g tin 0.10 1 FLX 100

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 44

LIGHTNING PROTECTION FREE-STANDING AIR TERMINALS

Free-Standing Air Terminals

A range of free-standing lightning interception terminals for the
protection of roof-mounted equipment on surfaces where no penetration
of the roof structure for anchoring is allowed.
A multi-component, stackable system with screw retention to achieve
protection heights of up to 12m.
The Free-Standing Air Terminal system is designed to withstand wind
speeds of up to 190kmh (118mph). The table on page 86 details the
required components for installation in different wind speed zones. We
recommend that all concrete bases are installed using the Protective
Roof Pads (Wallis part number PRP 001).

Terminal Components Unit Pack Part

Height m Weight Qty Number
m kg

3.0 Two-piece: 1.5 + 1.5 5.0 ATF 030

3.5 Two-piece: 2.0 + 1.5 5.5 ATF 035
4.0 Two-piece: 2.5 + 1.5 7.0 ATF 040
4.5 Two-piece: 3.5 + 1.0 9.2 ATF 045
5.0 Two-piece: 3.5 + 1.5 10.0 ATF 050
5.5 Two-piece: 4.0 + 1.5 10.6 ATF 055
6.0 Three-piece: 2.0 + 2.0 + 2.0 18.0 ATF 060
6.5 Three-piece: 2.5 + 2.0 + 2.0 21.2 1 ATF 065
7.0 Three-piece: 3.0 + 2.0 + 2.0 23.5 ATF 070
7.5 Three-piece: 3.5 + 2.0 + 2.0 26.0 ATF 075
8.0 Three-piece: 4.0 + 2.0 + 2.0 28.7 ATF 080
9.0 Three-piece: 4.0 + 2.5 + 2.5 30.5 ATF 090
10.0 Three-piece: 5.0 + 2.5 + 2.5 35.5 ATF 010
11.0 Three-piece: 5.0 + 3.5 + 2.5 37.8 ATF 011
12.0 Three-piece: 6.0 + 3.5 + 2.5 42.9 ATF 012
Material: Stainless Steel with Aluminium tip.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 45

LIGHTNING PROTECTION FREE-STANDING AIR TERMINALS

Free-Standing Air Terminal Supports

A range of supports to suit the free-standing air terminals shown on
page 84. See table on page 86 for recommended component
configuration.
Square Plate Support
For use with air terminals up to 4m. Used in conjunction with square
concrete bases.
Terminal Terminal Required No. of Unit Pack Part ATS 001
Height Barrel Ø Mounting Concrete Weight Quantity Number
m mm Space Supports kg
mm
up to 4.0m 42 650 x 650 4 or 8 7 1 ATS 001
Material: Stainless Steel.

Tripod Supports
For use with air terminals between 4.5m and 10m. Used in conjunction
with round concrete bases.
Terminal Terminal Required No. of Unit Pack Part
Height Barrel Ø Mounting Concrete Weight Quantity Number
m mm Space Supports kg ATT 001
mm
4.5 - 5.5 42 1350 x 1350 3 8 ATT 001
6.0 - 8.0 60 1850 x 1850 6 25 1 ATT 002
9.0 - 10.0 60 1850 x 1850 10 40 ATT 003
Material: Stainless Steel.

Quad Support
For use with air-terminals between 11m and 12m. Used in conjunction with
round concrete bases. ATT 002

Terminal Terminal Required No. of Unit Pack Part

Height Barrel Ø Mounting Concrete Weight Quantity Number
m mm Space Supports kg
mm
11.0 - 12.0 60 3400 x 3400 17 159 1 ATQ 001
Material: Stainless Steel.

ATT 003

ATQ 001

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 46

LIGHTNING PROTECTION FREE-STANDING AIR TERMINALS

Concrete Bases
Square
Used in conjunction with the Square Plate Support.
Base Size Height Pack Part
Weight mm mm Quantity Number
kg
12 60 SCB 012
SCB 012 300 x 300 1
16 80 SCB 016

Material: Concrete.
Round
Used in conjunction with the Tripod and Quad Supports. Integral M16
Thread.
Base Ø Height Pack Part
Weight mm mm Quantity Number
kg
SCB 016
12 380 75 RCB 012
16 380 93 RCB 016
1
20 380 105 RCB 020
25 420 105 RCB 025

Material: Concrete.
Protective Roof Pad
Suit all sizes of round and square concrete bases. Protects waterproof
PRP 001 roofing membrane from damage.
Size Pack Part
mm Quantity Number
Ø 445 / 300 x 300 1 PRP 001

Material: Rubber.

Free-Standing Air Terminal System

Wind Speeds
Terminal Terminal
Height Part Up to 130 kmh (81 mph) Up to 150 kmh (93 mph) Up to 170 kmh (106 mph) Up to 190 kmh (118 mph)
m Number
Support Concrete Support Concrete Support Concrete Support Concrete
Bases Bases Bases Bases
3.0 ATF 030 ATS 001 SCB 012 x 4 ATS 001 SCB 012 x 4 ATS 001 SCB 012 x 4 ATS 001 SCB 012 x 4
3.5 ATF 035 ATS 001 SCB 012 x 4 ATS 001 SCB 012 x 4 ATS 001 SCB 016 x 4 ATS 001 SCB 016 x 4
4.0 ATF 040 ATS 001 SCB 012 x 4 ATS 001 SCB 016 x 4 ATS 001 SCB 012 x 8 ATS 001 SCB 016 x 8
4.5 ATF 045 ATT 001 SCB 016 x 3 ATT 001 RCB 020 x 3 ATT 001 RCB 025 x 3 ATT 002 RCB 012 x 6
5.0 ATF 050 ATT 001 SCB 016 x 3 ATT 001 RCB 020 x 3 ATT 001 RCB 025 x 3 ATT 002 RCB 012 x 6
5.5 ATF 055 ATT 001 SCB 020 x 3 ATT 001 RCB 025 x 3 ATT 002 RCB 012 x 6 ATT 002 RCB 012 x 6
6.0 ATF 060 ATT 002 RCB 012 x 6 ATT 002 RCB 012 x 6 ATT 002 RCB 012 x 6 ATT 002 RCB 016 x 6
6.5 ATF 065 ATT 002 RCB 012 x 6 ATT 002 RCB 012 x 6 ATT 002 RCB 016 x 6 ATT 002 RCB 025 x 6
7.0 ATF 070 ATT 002 RCB 012 x 6 ATT 002 RCB 016 x 6 ATT 002 RCB 020 x 6 * *
7.5 ATF 075 ATT 002 RCB 016 x 6 ATT 002 RCB 020 x 6 ATT 002 RCB 025 x 6 * *
8.0 ATF 080 ATT 002 RCB 020 x 6 ATT 002 RCB 025 x 6 ATT 003 RCB 025 x 10 * *
9.0 ATF 090 ATT 003 RCB 025 x 10 ATT 003 RCB 025 x 10 ATT 003 RCB 025 x 10 * *
10.0 ATF 010 ATT 002 RCB 025 x 10 ATT 002 RCB 025 x 10 * * * *
11.0 ATF 011 ATQ 001 RCB 025 x 17 ATQ 001 RCB 025 x 17 * * * *
12.0 ATF 012 ATQ 001 RCB 025 x 17 ATQ 001 RCB 025 x 17 * * * *
*Please contact our sales office for information and advice.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 47

CONDUCTORS CONTENTS

CONDUCTORS
Introduction 88 – 89

Flat Tape System 90 – 97

Solid Circular System 98 – 99

Cable & Wire System 100 – 104

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 48

CONDUCTORS INTRODUCTION

Introduction Copper Conductor Ratings

The conductor is a vital component of any earthing and Fault current capacities, for one and three second durations,
for a wide selection of standard sizes of copper tapes are
lightning protection system.
shown in the table below. These conductor ratings are based
Wallis offers an extensive range of different types of upon the recommendations of BS 7430 with an initial
conductors manufactured in both copper and aluminium conductor temperature of 30°C and a maximum temperature
of 250°C.
which conform to the main British, European and world
earthing and lightning protection standards. Conductor C.S.A. kA for kA for
Size mm2 1 second 3 seconds
mm
There are several important
12.5 x 1.5 18.75 3.3 1.9
criteria to consider
12.5 x 3 37.5 6.6 3.8
when selecting a 20 x 1.5 30 5.3 3.0
conductor: 20 x 3 60 10.6 6.1
25 x 1.5 37.5 6.6 3.8
The conductor must 25 x 3 75 13.2 7.6
be resilient to the environmental 25 x 4 100 17.6 10.2
conditions in which it is installed. In particular it should be 25 x 6 150 26.4 15.2
30 x 2 60 10.6 6.1
capable of withstanding mechanical damage and
30 x 3 90 15.8 9.1
corrosion. It should also be compatible with 30 x 4 120 21.1 12.2
the material of other connected 30 x 5 150 26.4 15.2
components. 31 x 3 93 16.4 9.5
31.5 x 4 126 22.2 12.8
Secondly, the conductor 31 x 6 186 32.7 18.9
should have sufficient 38 x 3 114 20.1 11.6
38 x 5 190 33.4 19.3
cross-sectional area to be
38 x 6 228 40.1 23.2
capable of carrying, 40 x 3 120 21.1 12.2
without sustaining damage 40 x 4 160 28.2 16.3
or deterioration, any 40 x 5 200 35.2 20.3
40 x 6 240 42.2 24.4
currents that may
40 x 6.3 252 44.4 25.6
reasonably be expected. 50 x 3 150 26.4 15.2
50 x 4 200 35.2 20.3
50 x 5 250 44.0 25.4
50 x 6 300 52.8 30.5
50 x 6.3 315 55.4 32.0

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 49

CONDUCTORS INTRODUCTION

PVC Covered Conductors

Wallis offers a range of UV-stabilised PVC covered tapes BLACK 18B29*
and solid circular conductors in a range of different
colours. These colours have been chosen to
match the most common structural GREEN 06C39*
materials and will reduce the visual
impact of a lightning
protection conductor.
GREY 00A07*

STONE 08B23*

WHITE 10B15*

BROWN BS 6746C

*PVC colours to BS 5252

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:06 Page 50

CONDUCTORS FLAT TAPE SYSTEM

Bare Copper Tapes

Wallis high conductivity bare copper tape is used on both lightning
protection and earthing applications. It is annealed for ease of use and
has radiused edges.
All our standard bare copper tapes are marked ‘Wallis U.K. -
BS EN 13601’.

TC 506 Size C.S.A. Weight per Standard Part

WxH mm2 Metre Coil Size Number
mm kg m
12.5 x 1.5 18.75 0.17 100 TC 121
12.5 x 3 37.5 0.33 100 TC 123
TC 406 20 x 1.5 30 0.27 100 TC 201
20 x 3 60 0.53 100 TC 203
25 x 1.5 37.5 0.33 100 TC 251
25 x 3 75 0.67 25 & 50 TC 253
TC 303 25 x 4 100 0.89 50 TC 254
25 x 6 150 1.33 40 TC 256
30 x 2 60 0.53 50 TC 302
TC 256 30 x 3 90 0.80 50 TC 303
30 x 4 120 1.07 40 TC 304
30 x 5 150 1.33 40 TC 305
31 x 3 93 0.83 50 TC 313
TC 253
31.5 x 4 126 1.13 40 TC 3154
31 x 6 186 1.65 30 TC 316
38 x 3 114 1.01 50 TC 383
TC 203 38 x 5 190 1.69 30 TC 385
38 x 6 228 2.02 25 TC 386
40 x 3 120 1.06 40 TC 403
40 x 4 160 1.42 30 TC 404
40 x 5 200 1.78 25 TC 405
40 x 6 240 2.16 25 TC 406
40 x 6.3 252 2.24 25 TC 4063
50 x 3 150 1.33 40 TC 503
50 x 4 200 1.78 30 TC 504
50 x 5 250 2.22 20 TC 505
50 x 6 300 2.68 20 TC 506
50 x 6.3 315 2.80 20 TC 5063
50 x 8 400 3.60 15 TC 508

Material: Copper to BS EN 13601 (formerly BS 1432).

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:06 Page 51

CONDUCTORS FLAT TAPE SYSTEM

PVC Covered Copper Tapes

Wallis PVC covered copper tapes are mainly used as down conductors
on a building’s structural lightning protection system.
The copper is manufactured to BS EN 13601 and is annealed for ease
of use.
There is a choice of six standard PVC colours to match the most
common building materials and provide an aesthetic finish to the
external lightning protection system. All PVC coverings are UV stabilised
although some discolouration may occur over time.
Other PVC colours are also available to order. These may be subject to
minimum order quantities and lead times. Please contact our sales
office for further information. TP 253 B

Size Colour C.S.A. Weight Standard Part

WxH mm2 per Metre Coil Sizes Number
mm kg m
12.5 x 1.5 Black 18.75 0.21 100 TP 121 BL TP 253 G

Brown TP 253 B
Black 25 TP 253 BL
Grey & TP 253 G TP 253 W
25 x 3 75 0.77
Green 50 TP 253 GR
Stone TP 253 S
White TP 253 W
25 x 6 Green 150 1.33 40 TP 256 GR
TP 253 BL
50 x 3 Green 150 1.33 40 TP 503 GR
50 x 6 Green 300 2.68 20 TP 506 GR

Material: Copper to BS EN 13601 (formerly BS 1432).

PVC colours to BS 5252 except green to BS 6746C. TP 253 GR

TP 506 GR

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:06 Page 52

CONDUCTORS FLAT TAPE SYSTEM

Green & Yellow PVC Insulated Copper Tape

Size C.S.A. Weight Standard Part
WxH mm2 per Metre Coil Size Number
mm kg m
25 x 3 75 0.79 25 & 50 TP 253 GY
Material: Copper to BS EN 13601 (formerly BS 1432).
PVC colour to BS 6746C.

Lead Covered Copper Tape

Size C.S.A. Weight Standard Part
WxH mm2 per Metre Coil Size Number
mm kg m
25 x 3 75 2.56 25 TL 253

Material: Copper to BS EN 13601 (formerly BS 1432).

LSOH Covered Copper Tapes

Size Colour C.S.A. Weight Standard Part
WxH mm2 per Metre Coil Size Number
mm kg m
25 x 3 75 0.77 25 & 50 TP 253 GRLSF
25 x 6 Green 150 1.53 40 TP 256 GRLSF
50 x 6 300 2.95 20 TP 506 GRLSF

Material: Copper to BS EN 13601 (formerly BS 1432).

PVC colours to BS 6746C.

TP 253 GRLSF
W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:06 Page 53

CONDUCTORS FLAT TAPE SYSTEM

Tinned Copper Tapes

Size C.S.A. Weight Standard Part
WxH mm2 per Metre Coil Size Number
mm kg m
12.5 x 1.5 18.75 0.17 100 TT 121
12.5 x 3 37.5 0.33 100 TT 123
20 x 1.5 30 0.27 100 TT 201
20 x 3 60 0.53 100 TT 203
25 x 1.5 37.5 0.33 100 TT 251
25 x 3 75 0.67 50 TT 253
25 x 4 100 0.89 50 TT 254
25 x 6 150 1.33 40 TT 256 TT 506
30 x 2 60 0.53 50 TT 302
30 x 3 90 0.80 50 TT 303
TT 406
30 x 4 120 1.07 40 TT 304
30 x 5 150 1.33 40 TT 305
31 x 3 93 0.83 50 TT 313
TT 313
31.5 x 4 126 1.13 40 TT 3154
31 x 6 186 1.65 30 TT 316
38 x 3 114 1.01 50 TT 383 TT 256

38 x 5 190 1.69 30 TT 385

38 x 6 228 2.02 25 TT 386
TT 253
40 x 3 120 1.06 40 TT 403
40 x 4 160 1.42 30 TT 404
40 x 5 200 1.78 25 TT 405
TT 203
40 x 6 240 2.16 25 TT 406
40 x 6.3 252 2.24 25 TT 4063
50 x 3 150 1.33 40 TT 503
50 x 4 200 1.78 30 TT 504
50 x 5 250 2.22 20 TT 505
50 x 6 300 2.68 20 TT 506
50 x 6.3 315 2.80 20 TT 5063
50 x 8 400 3.60 15 TT 508

Material: Copper to BS EN 13601 (formerly BS 1432).

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CONDUCTORS FLAT TAPE SYSTEM

Bare Hard Drawn Copper Bars

Size C.S.A. Weight Standard Part
WxH mm2 per Metre Length Number
mm kg m
20 x 3 60 0.53 HD 2003
25 x 3 75 0.67 HD 2503
25 x 4 100 0.89 HD 2504
25 x 6 150 1.33 HD 2506
38 x 6 228 2.03 4 HD 3806

HD 2503 50 x 6 300 2.68 HD 5006

75 x 6 450 4.02 HD 7506
100 x 5 500 4.48 HD 10005
100 x 6 600 5.38 HD 10006

Material: Copper to BS EN 12163 (formerly BS 2874).

HD 2506

HD 5006 H

Tinned Hard Drawn Copper Bars

Size C.S.A. Weight Standard Part
WxH mm2 per Metre Length Number
mm kg m
25 x 3 75 0.67 HDT 2503
25 x 6 150 1.33 4 HDT 2506
50 x 6 300 2.68 HDT 5006

Material: Copper to BS EN 12163 (formerly BS 2874).

HDT 2503

HDT 2506

HDT 5006

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:06 Page 55

CONDUCTORS FLAT TAPE SYSTEM

Bare Copper Flat Braids

Wallis copper braids are utilised as flexible earth bonding leads.
Other sizes and constructions are available on request. Please contact
our sales office for further information.
Nominal Nominal Size Braid Current Weight Standard Part
C.S.A. WxH Construction Rating per Metre Coil Size Number
mm2 mm Amps kg m
6 12 x 1.0 24/8/0.2mm 66 0.06 100 FB 121
10 15 x 1.5 48/7/0.2mm 90 0.10 50 FB 151 FB 192

16 19 x 2.5 48/11/0.2mm 120 0.16 50 FB 192

25 23 x 2.0 48/17/0.2mm 160 0.25 50 FB 232
35 25 x 3.5 48/23/0.2mm 200 0.34 50 FB 253
50 30 x 5.0 48/33/0.2mm 250 0.48 50 FB 305 FB 253

70 32 x 6.0 48/46/0.2mm 300 0.63 50 FB 326

Material: Copper wire to BS EN 13602 (formerly BS 4109).

FB 326

Tinned Copper Flat Braids

Wallis tinned copper braids are utilised as flexible earth bonding leads
with additional corrosion protection
Other sizes, materials and constructions are available on request. Please
contact our sales office for further information.

Nominal Nominal Size Braid Current Weight Standard Part

C.S.A. WxH Construction Rating per Metre Coil Size Number
mm2 mm Amps kg m FBT 192
6 12 x 1.0 24/8/0.2mm 66 0.06 100 FBT 121
10 15 x 1.5 48/ 7/0.2mm 90 0.10 50 FBT 151
16 19 x 2.5 48/11/0.2mm 120 0.16 50 FBT 192
25 23 x 2.0 48/17/0.2mm 160 0.25 50 FBT 232 FBT 253
35 25 x 3.5 48/23/0.2mm 200 0.34 50 FBT 253
50 30 x 5.0 48/33/0.2mm 250 0.48 50 FBT 305
70 32 x 6.0 48/46/0.2mm 300 0.63 50 FBT 326
FBT 326
Material: Copper wire to BS EN 13602 (formerly BS 4109).

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95
Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:06 Page 56

CONDUCTORS FLAT TAPE SYSTEM

Bare Aluminium Tapes

Wallis bare aluminium tapes are used on lightning protection system
applications. The aluminium is annealed for ease of use and has radiused
edges.

Size C.S.A. Weight Standard Part

WxH mm2 per Metre Coil Size Number
mm kg m
12.5 x 1.5 18.75 0.05 TA 121
TA 253
20 x 3 60 0.15 TA 203
25 x 3 75 0.21 TA 253

TA 203 30 x 3 90 0.25 50 TA 303

25 x 6 150 0.42 TA 256
40 x 6 240 0.67 TA 406
50 x 6 300 0.85 TA 506
TA 506
Material: Aluminium to BS2898.

PVC Covered Aluminium Tapes

Wallis PVC covered aluminium tapes are available in a choice of six standard
colours to match the most common building materials and provide an
aesthetic finish to the external lightning protection system. All PVC coverings
are UV stabilised although some discolouration may occur over time.
Other PVC colours are also available to order. These may be subject to
minimum order quantities and lead times. Please contact our sales office for
further information.

Size Colour C.S.A. Weight Standard Part

WxH mm2 per Metre Coil Size Number
mm kg m
TAP 253 BL 12.5 x 1.5 Black 0.09 50
18.75 TAP 121 BL
20 x 3 Black 60 0.25 50 TAP 203 BL
Brown TAP 253 B

TAP 253 B Black TAP 253 BL

25 x 3 Grey 75 0.30 50 TAP 253 G
Green TAP 253 GR
Stone TAP 253 S
TAP 253 GR White TAP 253 W

Material: Aluminium to BS 2898.

PVC colours to BS 5252 except green to BS 6746C.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:06 Page 57

CONDUCTORS FLAT TAPE SYSTEM

Anti-Vandal Tape Guards

Wallis anti-vandal tape guards provide protection from accidental
damage, vandalism and theft for flat tapes up to 40mm wide.
Easy to secure, the guard has a low profile and the galvanised finish
offers long lasting resistance to corrosion.

L W W1 H Unit Pack Part

mm mm mm mm Weight Quantity Number
kg
2000 1.98 AVG
72 40 17 1
3000 2.72 AVG 3 AVG

Material: Galvanised Steel.

L W W1 H Unit Pack Part

mm mm mm mm Weight Quantity Number
kg
2000 1.98 AVP AVP
72 40 17 1
3000 2.72 AVP 3

Material: Galvanised Steel with black powder coating.

W1
H
W

Bare Perforated Copper Tape

Wallis perforated copper tape is used for bonding of lightning protection
systems. It is annealed for ease of use and has radiused edges.

Size C.S.A. Weight Standard Part

WxH mm2 per Metre Coil Size Number
mm kg m
25 x 1.5 37.5 0.33 100 PCT 251
Material: Copper to BS EN 13601 (formerly BS 1432).

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CONDUCTORS SOLID CIRCULAR SYSTEM

Bare Solid Circular Copper Conductor

Wallis bare 8mm diameter solid circular copper conductor is used on
lightning protection systems. It is annealed for ease of use.

D C.S.A. Weight Standard Part

mm mm2 per Metre Coil Size Number
kg m
8 50.27 0.44 50 CSC 08

Material: Copper to BS EN 13601 (formerly BS 1433).

PVC Covered Solid Circular Copper Conductors

Wallis PVC covered 8mm diameter copper conductors are mainly used as
down conductors on a building’s structural lightning protection system.
There is a choice of five standard PVC colours to match the most
common building materials and provide an aesthetic finish to the external
lightning protection system. All the PVC coverings are UV stabilised
although some discolouration may occur over time.
Other PVC colours are available to order but may be subject to minimum
order quantities and lead-times. Please contact our sales office for further
information.
D Colour C.S.A. D1 Weight Standard Part
CPC 08G mm mm2 mm per Metre Coil Size Number
kg m
Brown CPC 08 B
Black CPC 08 BL

CPC 08S 8 Grey 50.27 10 0.49 50 CPC 08 G

Stone CPC 08 S
White CPC 08 W

Material: Copper to BS EN 13601 (formerly BS 1433).

CPC 08W PVC colours to BS 5252.

D D1
D

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:07 Page 59

CONDUCTORS SOLID CIRCULAR SYSTEM

Bare Solid Circular Aluminium Conductor

Wallis bare 8mm diameter solid circular aluminium conductor is used on
lightning protection systems. It is annealed for ease of use.

D C.S.A. Weight Standard Part

mm mm2 per Metre Coil Size Number
kg m
8 50.27 0.12 50 CSA 08

Material: Aluminium to BS 2898.

D
D

PVC Covered Solid Circular Aluminium

Conductors
Wallis PVC covered 8mm diameter aluminium conductors are used as
down conductors on a building’s structural lightning protection system.
There is a choice of five standard PVC colours to match the most
common building materials and provide an aesthetic finish to the external
lightning protection system. All the PVC coverings are UV stabilised
although some discolouration may occur over time.
Other PVC colours are available to order but may be subject to minimum
order quantities and lead-times. Please contact our sales office for further
information.
CPA 08B
D Colour C.S.A. D1 Weight Standard Part
mm mm2 mm per Metre Coil Size Number
kg m
Brown CPA 08 B
Black CPA 08 BL
8 Grey 50.27 10 0.18 50 CPA 08 G CPA 08BL
Stone CPA 08 S
White CPA 08 W

Material: Aluminium to BS 2898.

PVC colours to BS 5252.
CPA 08BW

D D1
D

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CONDUCTORS CABLE & WIRE SYSTEM

Bare Stranded Copper Conductors

Wallis bare stranded copper conductor is used on both lightning
protection and earthing systems.
Available as soft drawn (copper wire that has been heat treated) and
hard drawn (copper wire that has not been annealed after drawing).
Soft Drawn
C.S.A. Stranding Nominal Maximum Weight Part
CBS 016 mm2 No. x Ø Ø Resistance per Metre Number
mm mm @ 20oC Ω/km kg
6 7 x 1.04 3.12 3.080 0.05 CBS 006
10 7 x 1.35 4.05 1.830 0.09 CBS 010
16 7 x 1.70 5.10 1.150 0.15 CBS 016
CBS 025
25 7 x 2.14 6.42 0.727 0.23 CBS 025
35 19 x 1.53 7.65 0.524 0.32 CBS 035
50 19 x 1.78 8.90 0.387 0.43 CBS 050
70 19 x 2.14 10.70 0.268 0.62 CBS 070
CBS 050
95 19 x 2.52 12.60 0.193 0.86 CBS 095
120 37 x 2.03 14.21 0.153 1.09 CBS 120
150 37 x 2.25 15.75 0.124 1.33 CBS 150
185 37 x 2.52 17.64 0.099 1.67 CBS 185
240 61 x 2.25 20.25 0.075 2.20 CBS 240
300 61 x 2.52 22.68 0.060 2.76 CBS 300
CBS 150
400 61 x 2.85 25.65 0.047 3.53 CBS 400

Material: Copper to BS 6360.

Hard Drawn
C.S.A. Stranding Nominal Maximum Weight Part
mm2 No. x Ø Ø Resistance per Metre Number
mm mm @ 20oC Ω/km kg
35 7 x 2.52 7.65 0.540 0.32 CHS 035
50 7 x 3.00 8.90 0.399 0.43 CHS 050
70 7 x 3.55 10.72 0.276 0.62 CHS 070
95 37 x 1.78 12.60 0.199 0.86 CHS 095

Material: Copper to BS 6360.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:07 Page 61

CONDUCTORS CABLE & WIRE SYSTEM

Green & Yellow PVC Insulated

Stranded Copper Conductors
A range of single core stranded class 2 plain annealed copper
conductors with a heat resistant polyvinyl chloride (PVC) outer sheath.
These non-armoured single insulation cables are often referred to as
6491X and are manufactured in accordance with specification BS 6004.
Harmonised code H07V-R. Voltage rating 450/750V (designated
suitable 600/1000V systems). Heat resistant PVC insulation complying
with BS 7655 Type TI 1. Operating temperatures 0oC to +70oC.
CPS 016
Installation is not recommended for PVC below 0oC as the compound
may become brittle.

C.S.A. Stranding Nominal Maximum Weight Part

mm2 No. x Ø Ø Resistance per Metre Number
mm mm @ 20oC Ω/km kg CPS 035
6 7 x 1.04 4.8 3.800 0.07 CBS 006
10 7 x 1.35 6.1 1.830 0.12 CBS 010
16 7 x 1.70 7.1 1.150 0.19 CBS 016
25 7 x 2.14 8.9 0.727 0.29 CBS 025
35 19 x 1.53 10.1 0.524 0.41 CBS 035
CPS 095
50 19 x 1.78 11.8 0.387 0.53 CBS 050
70 19 x 2.14 13.6 0.268 0.73 CBS 070
95 19 x 2.52 15.9 0.193 1.00 CBS 095
120 37 x 2.03 17.5 0.153 1.16 CBS 120
150 37 x 2.25 19.4 0.124 1.54 CBS 150
185 37 x 2.52 21.7 0.099 2.01 CBS 185 CPS 240
240 61 x 2.25 24.5 0.075 2.49 CBS 240
300 61 x 2.52 27.5 0.060 3.05 CBS 300
400 61 x 2.85 30.9 0.047 3.90 CBS 400

Material: Copper to BS 6360.

PVC Colour to BS 6746C.

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CONDUCTORS CABLE & WIRE SYSTEM

Tinned Stranded Copper Conductors

C.S.A. Stranding Nominal Maximum Weight Part
mm2 No. x Ø Ø Resistance per Metre Number
mm mm @ 20oC Ω/km kg
6 7 x 1.04 3.12 3.110 0.05 CTS 006
10 7 x 1.35 4.05 1.840 0.09 CTS 010
16 7 x 1.70 5.10 1.160 0.15 CTS 016
25 7 x 2.14 6.42 0.734 0.23 CTS 025
CTS 006
35 19 x 1.53 7.65 0.529 0.32 CTS 035
50 19 x 1.78 8.90 0.391 0.43 CTS 050
70 19 x 2.14 10.70 0.270 0.62 CTS 070
95 19 x 2.52 12.60 0.195 0.86 CTS 095
CTS 025
120 37 x 2.03 14.21 0.154 1.09 CTS 120
150 37 x 2.25 15.75 0.126 1.33 CTS 150
185 37 x 2.52 17.64 0.100 1.67 CTS 185
240 61 x 2.25 20.25 0.076 2.20 CTS 240
CTS 070
300 61 x 2.52 22.68 0.061 2.76 CTS 300
400 61 x 2.85 25.65 0.048 3.53 CTS 400

Material: Copper to BS 6360.

CTS 185

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:07 Page 63

CONDUCTORS CABLE & WIRE SYSTEM

Lead Covered Stranded Copper Conductors

C.S.A. Stranding Nominal Weight Part
mm2 No. x Ø Diameter per Metre Number
mm mm kg
185 37 x 2.52 21.64 2.71 CLS 185
240 61 x 2.25 24.25 3.58 CLS 240
300 61 x 2.52 26.68 4.49 CLS 300 CLS 185
400 61 x 2.85 29.65 5.74 CLS 400

Material: Copper to BS 6360.

CLS 240

Anti-Vandal Cable Guards

Wallis anti-vandal cable guards provide protection from accidental
damage, vandalism and theft for cables up to 50mm diameter.
For installation on walls etc.
These guards have flat flanges and are supplied with screw fixing holes
for ease of installation.
L W D Colour Unit Pack Part
mm mm mm Weight Quantity Number
kg
3000 105 50 Grey 2.40 1 AVC 001

Material: Plastic.
For installation on wooden telegraph poles
These guards have angled flanges and are supplied with screw fixing
holes for ease of installation.
L W D Colour Unit Pack Part
mm mm mm Weight Quantity Number
kg
3000 95 50 Black 2.40 1 AVC 002

Material: Plastic.

L
D

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CONDUCTORS CABLE & WIRE SYSTEM

Bare Copper Round Braids

Wallis copper round braids are utilised as flexible earth bonding leads.
Other sizes and constructions are available on request. Please contact
our sales office for further information
Nominal Nominal Wire Strand Current Weight Standard Part
C.S.A. Ø Ø Rating per Metre Coil Size Number
mm2 mm mm Amps kg m
RBB 006 6 5.0 69 0.05 100 RBB 006
10 7.0 97 0.08 50 RBB 010
16 8.0 132 0.13 50 RBB 016
0.15
25 10.0 178 0.22 50 RBB 025
35 12.0 223 0.30 50 RBB 035
RBB 016
50 15.0 282 0.44 50 RBB 050

Material: Copper wire to BS EN 13602 (formerly BS 4109).

RBB 035

RBB 050

Tinned Copper Round Braids

Wallis tinned copper round braids are utilised as flexible earth bonding
leads with additional corrosion protection.
Other sizes and constructions are available on request. Please contact
our sales office for further information.
Nominal Nominal Wire Strand Current Weight Standard Part
C.S.A. Ø Ø Rating per Metre Coil Size Number
mm2 mm mm Amps kg m
RBT 006
6 5.0 69 0.05 100 RBT 006
10 7.0 97 0.08 50 RBT 010
16 8.0 132 0.13 50 RBT 016
0.15
25 10.0 178 0.22 50 RBT 025
35 12.0 223 0.30 50 RBT 035
RBT 016
50 15.0 282 0.44 50 RBT 050

Material: Copper wire to BS EN 13602 (formerly BS 4109).

RBT 035

RBT 050

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:07 Page 65

FASTENERS & FIXINGS CONTENTS

FASTENERS & FIXINGS

Hexagon Head Set Screws 106 - 107

Hexagon Nuts 107

Flat Washers 108

Spring Washers 108

Countersunk Wood Screws 109

Round Head Wood Screws 109

Countersunk Machine Screws 110

Plastic Wall Plugs 110

Round Head Copper Nails 111

Round Head Rivets 111

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:07 Page 66

FASTENERS & FIXINGS

Hexagon Head Set Screws

Phosphor Bronze
Thread Length Weight Pack Part
Size mm per 100 Quantity Number
kg
10 1.20 OSP 0610
12 1.30 OSP 0612
M6 100
16 1.50 OSP 0616
20 1.90 OSP 0620
16 1.75 OSP 0816
20 2.00 OSP 0820
M8 100
25 2.30 OSP 0825
30 2.90 OSP 0830
16 1.95 OSP 1016
20 2.20 OSP 1020
M10 25 2.75 100 OSP 1025
30 3.10 OSP 1030
35 3.40 OSP 1035
25 4.50 OSP 1225
30 4.75 OSP 1230
M12 35 5.00 100 OSP 1235
40 5.70 OSP 1240
50 6.30 OSP 1250
Material: Phosphor Bronze.

Brass
Thread Length Weight Pack Part
Size mm per 100 Quantity Number
kg
10 1.20 OSB 0610
12 1.30 OSB 0612
M6 100
16 1.50 OSB 0616
20 1.90 OSB 0620
16 1.75 OSB 0816
20 2.00 OSB 0820
M8 100
25 2.30 OSB 0825
30 2.90 OSB 0830
16 1.95 OSB 1016
20 2.20 OSB 1020
M10 25 2.75 100 OSB 1025
30 3.10 OSB 1030
35 3.40 OSB 1035
25 4.50 OSB 1225
30 4.75 OSB 1230
M12 35 5.00 100 OSB 1235
40 5.70 OSB 1240
50 6.30 OSB 1250
Material: Brass.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:07 Page 67

FASTENERS & FIXINGS

Hexagon Head Set Screws (continued)

Stainless Steel
Thread Length Weight Pack Part
Size mm per 100 Quantity Number
kg
10 1.20 OSS 0610
12 1.30 OSS 0612
M6 100
16 1.50 OSS 0616
20 1.90 OSS 0620
16 1.75 OSS 0816
20 2.00 OSS 0820
M8 100
25 2.30 OSS 0825
30 2.90 OSS 0830
16 1.95 OSS 1016
20 2.20 OSS 1020
M10 25 2.75 100 OSS 1025
30 3.10 OSS 1030
35 3.40 OSS 1035
25 4.50 OSS 1225
30 4.75 OSS 1230
M12 35 5.00 100 OSS 1235
40 5.70 OSS 1240
50 6.30 OSS 1250
Material: Stainless Steel.

Hexagon Nuts
Phosphor Bronze
Thread Weight Pack Part
Size per 100 Quantity Number
kg
M6 0.35 ONP 06
M8 0.90 ONP 08
100
M10 1.15 ONP 10
M12 1.65 ONP 12
Material: Phosphor Bronze.
Brass
Thread Weight Pack Part
Size per 100 Quantity Number
kg
M6 0.25 ONB 06
M8 0.80 ONB 08
100
M10 1.15 ONB 10
M12 1.65 ONB 12
Material: Brass.
Stainless Steel
Thread Weight Pack Part
Size per 100 Quantity Number
kg
M6 0.25 ONS 06
M8 0.80 ONS 08
100
M10 1.15 ONS 10
M12 1.65 ONS 12
Material: Stainless Steel.

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FASTENERS & FIXINGS

Flat Washers
Phosphor Bronze
Thread Weight Pack Part
Size per 100 Quantity Number
kg
M6 0.05 OWP 06
M8 0.15 OWP 08
100
M10 0.25 OWP 10
M12 0.50 OWP 12
Material: Phosphor Bronze.
Brass
Thread Weight Pack Part
Size per 100 Quantity Number
kg
M6 0.05 OWB 06
M8 0.15 OWB 08
100
M10 0.25 OWB 10
M12 0.50 OWB 12
Material: Brass.
Stainless Steel
Thread Weight Pack Part
Size per 100 Quantity Number
kg
M6 0.05 OWS 06
M8 0.15 OWS 08
100
M10 0.25 OWS 10
M12 0.50 OWS 12
Material: Stainless Steel.

Spring Washers
Phosphor Bronze
Thread Weight Pack Part
Size per 100 Quantity Number
kg
M6 0.04 OTP 06
M8 0.10 OTP 08
100
M10 0.20 OTP 10
M12 0.20 OTP 12
Material: Phosphor Bronze.
Stainless Steel
Thread Weight Pack Part
Size per 100 Quantity Number
kg
M6 0.04 OTS 06
M8 0.10 OTS 08
100
M10 0.20 OTS 10
M12 0.20 OTS 12
Material: Stainless Steel.

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FASTENERS & FIXINGS

Countersunk Wood Screws

Brass
Size Weight Pack Part
per 100 Quantity Number
kg
11/4” x No. 10 0.20 OAB 132
11/4” x No. 12 0.30 OAB 133
1 1 /2 ” x No. 10 0.50 OAB 138
100
11/2” x No. 12 0.60 OAB 139
2” x No. 10 0.80 OAB 151
2” x No. 12 1.00 OAB 152

Material: Brass.
Stainless Steel
Size Weight Pack Part
per 100 Quantity Number
kg
11/4” x No. 10 0.20 OAS 132
11/4” x No. 12 0.30 OAS 133
1 1 /2 ” x No. 10 0.50 OAS 138
100
11/2” x No. 12 0.60 OAS 139
2” x No. 10 0.80 OAS 151
2” x No. 12 1.00 OAS 152

Material: Stainless Steel.

Round Head Wood Screws

Brass
Size Weight Pack Part
per 100 Quantity Number
kg
11/4” x No. 10 0.20 ORB 132
11/4” x No. 12 0.30 ORB 133
11/2” x No. 10 0.50 ORB 138
100
11/2” x No. 12 0.60 ORB 139
2” x No. 10 0.80 ORB 151
2” x No. 12 1.00 ORB 152

Material: Brass.
Stainless Steel
Size Weight Pack Part
per 100 Quantity Number
kg
11/4” x No. 10 0.20 ORS 132
11/4” x No. 12 0.30 ORS 133
1 1 /2 ” x No. 10 0.50 ORS 138
100
11/2” x No. 12 0.60 ORS 139
2” x No. 10 0.80 ORS 151
2” x No. 12 1.00 ORS 152

Material: Stainless Steel.

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FASTENERS & FIXINGS

Countersunk Machine Screws

Brass
Thread Length Weight Pack Part
Size mm per 100 Quantity Number
kg
12 0.30 OMB 0612
M6 16 0.40 100 OMB 0616
20 0.50 OMB 0620
16 0.45 OMB 0816
M8 20 0.55 100 OMB 0820
25 0.65 OMB 0825
25 0.75 OMB 1025
M10 30 0.85 100 OMB 1030
35 0.95 OMB 1035
Material: Brass.
Stainless Steel
Thread Length Weight Pack Part
Size mm per 100 Quantity Number
kg
12 0.30 OMS 0612
M6 16 0.40 100 OMS 0616
20 0.50 OMS 0620
16 0.45 OMS 0816
M8 20 0.55 100 OMS 0820
25 0.65 OMS 0825
25 0.75 OMS 1025
M10 30 0.85 100 OMS 1030
35 0.95 OMS 1035

Material: Stainless Steel.

Plastic Wall Plugs

Screw Colour Weight Pack Part
Size per 100 Quantity Number
kg
Black OP10 BLA
Blue OP10 BLU
No. 10 – 14 0.15 100
Brown OP10 BRO
Red OP10 RED

Material: Plastic.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:08 Page 71

FASTENERS & FIXINGS

Round Head Copper Nails

Length Weight Pack Part
mm per 100 Quantity Number
kg
50 0.70 100 OCN 050

Material: Copper.

Round Head Rivets

Copper
Size Weight Pack Part
mm per 100 Quantity Number
kg
5 x 12 0.35 ORC 512
100
5 x 20 0.45 ORC 520

Material: Copper.

Aluminium
Size Weight Pack Part
mm per 100 Quantity Number
kg
5 x 12 0.12 ORA 512
100
5 x 20 0.15 ORA 520

Material: Aluminium.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 2

LIGHTNING PROTECTION INTRODUCTION

Structural Lightning Protection termination; the “zone of protection” is used for buildings up
to 20 metres; for buildings above this height the “rolling
Introduction sphere” method is used.
If correctly installed, fitting a lightning protection system
Down Conductors
(LPS) will minimise the risk of damage to structures and
injury to personnel by conducting high discharge currents The recommended spacing between down conductors
safely to earth. Protection against the secondary effects of varies according to risk and is detailed in internationally
lightning to internal electrical equipment, known as transient recognised European and British lightning protection
over voltage protection is achieved by the use of transient standards. E.g., conductors may be spaced at 20 metres for
over voltage protectors; this is in addition to the LPS. some buildings but this distance could be reduced to 10
metres for tall or high risk buildings. Down conductors
A LPS cannot protect against over voltage transients. Over
should be positioned as evenly as possible around the
voltage transient protectors cannot protect against direct
outside walls of the structure, starting from the corners.
lightning strikes. Both are required for total structural and
equipment protection. Minimum distances must be maintained to prevent side
flashing. Re-entrant loops are also to be avoided.
Lightning Protection Strategy
Earth Terminations & Networks
The normal strategy in
achieving protection is to The information contained in this section primarily refers to
capture the lightning at a Lightning Protection Earthing Systems (LPS) and does not
preferred point by the use of detail all earthing requirements for electrical wiring, although
air terminations and there are some similarities. Please refer to the IEE 16th
conducting it via low edition wiring regulations for more details.
impedance down conductors An earth electrode should be connected to each down
and earth electrodes to a low conductor of a lightning protection system (LPS). Earth rods
resistance earth of less than may need an earth inspection housing for periodic testing of
ten ohms. Air terminations earth resistance.
and down conductors are
Earth rods are used in most applications and are driven into
spaced at regular intervals to
the ground as close as is practicable to the structure and the
form a mesh of conductors around the perimeter of the
down conductor. They are normally spaced at specified
building and roof, known as a Faraday cage, and are joined
intervals corresponding to the spacing on the down
together by specially produced clamps and fixings or
conductors.
welding.
Resistance to Earth
Lightning Protection System Design Considerations
For an LPS the earth termination network as a whole should
An LPS is designed according to geographical location, local
have a combined resistance of not more than ten ohms,
terrain, soil conditions, size and height of building, type of
before bonding to building metalwork. However, the
material used in construction, type of material stored in the
maximum resistance value for earthing systems is
building, use of building and is based on established
application specific.
standards for risk assessment.

Air Termination Networks

The recommended spacing between conductors varies
according to risk and is detailed in internationally recognised
European and British lightning protection standards. E.g., a
mesh of conductors of 10 by 20 metres is considered
sufficient for most applications; however, a high risk structure
may require a 10 by 10 mesh.
There are two methods used to calculate the area
immediately around a building protected by the air

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 3

LIGHTNING PROTECTION INTRODUCTION

A single earth rod may not achieve the required resistance clamps are tight and well
figure and several may be need to be fitted to achieve this; protected from corrosion, which
their combined resistance is proportional to the reciprocal of can occur if dissimilar metals are
the individual rod resistances to earth. This rule holds true as joined. Ideally there should be as
long as each rod is situated outside the resistance area of few joints as possible in an LPS
any other. To ensure this is the case, it is generally accepted design.
that the minimum spacing between rods should not be less
than their driven length. Maintenance & Life of an LPS
The expected number of rods It is important to properly maintain
required to obtain a particular an LPS to ensure it retains its
resistance value, e.g. ten ohms, can ability to conduct the same current carrying capacity as it did
be roughly calculated. To do this when it was originally installed. Earth rod resistances should
the soil resistivity needs to be taken be regularly checked. Corrosion and fault currents can cause
into consideration. A soil resistivity high resistance joints leading to overheating. However, if an
test will need to be performed. LPS is correctly installed and maintained it should last for
many years.
There are several methods used to
obtain a lower resistance value: The information contained in this section is intended as a
guide and should not be used to perform designs. A.N.Wallis
More rods can be driven. does not accept responsibility for errors or omissions.
Rods can be driven deeper. Detailed information on LPS design is contained in
Rods of a larger diameter can be used. internationally recognised European
and British LPS standards.
Ring conductors connecting rods together
underground can be used.
Where deep driving is not possible shorter rods with a larger
diameter can be used; copper earth mats and earth plates
can be used in place of earth rods.
A “crow’s foot” configuration can be used where parallel
connection is not possible.
Where high resistance soil conditions are a problem soil
conditioning agents can be used to backfill rod holes.
Conductive concrete can be used to backfill an earth mat.
Both effectively increase an electrodes cross sectional area
and therefore reduce its resistance to earth.
The international standards also specify the recommended
materials used for all earthing conductors and their
dimensions.

Equipotential Bonding
It is common practice to use the buildings natural structural
steelwork and bonding it to the LPS to further improve its
ability to conduct lightning and fault currents to earth; prior
permission may be required.

Joints
Joints should be mechanically effective, all joints other than
welded ones are a potential discontinuity, and care should
be taken to ensure contact surfaces are clean and that fixing

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 4

LIGHTNING PROTECTION FLAT TAPE SYSTEM

ATC 120M
Taper Pointed Air Rods
Air rods form an important part of the air termination network of a
lightning protection system. All of our air rods are supplied with a
locknut enabling the rod to be locked tight against the conductor.
ATC 220M Please see pages 45 - 47 for further information on our range of
saddles, brackets and couplings.
Copper Air Rods
Thread L L1 Unit Pack Part
Size mm mm Weight Quantity Number
kg
300 0.53 ATC 112M
500 0.85 ATC 120M
M16 1000 41 1.70 5 ATC 139M
1500 2.59 ATC 160M
2000 3.47 ATC 179M
300 0.80 ATC 212M
ATA 120M
500 1.34 ATC 220M
M20 1000 41 2.68 5 ATC 239M
1500 4.02 ATC 260M
2000 5.36 ATC 279M
ATA 112M
Material: Copper.

Aluminium Air Rods

Thread L L1 Unit Pack Part
Size mm mm Weight Quantity Number
kg
300 0.18 ATA 112M
500 0.29 ATA 120M
M16 1000 41 0.57 5 ATA 139M
1500 0.98 ATA 160M
2000 1.09 ATA 179M

Material: Aluminium.

Thread Size

L1

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 5

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Multi-Point
Used in conjunction with the taper pointed copper air rods.
Air H W Unit Pack Part
Rod Ø mm mm Weight Quantity Number
mm kg
16 & 20 156 72 0.30 5 MPC 16

Material: Gunmetal base with Copper spikes.

Light Duty Air Rod Saddles

Light duty saddles are used to support air rods on flat roof surfaces.
For use with Copper Air Rods
Thread L H Unit Pack Part ASGL 16M
Size mm mm Weight Quantity Number
kg
M16 ASGL 16M
101 37 0.43 5
M20 ASGL 20M

Material: Gunmetal.

For use with Aluminium Air Rods

Thread L H Unit Pack Part
Size mm mm Weight Quantity Number ASAL 16M
kg
M16 101 37 0.15 5 ASAL 16M
Material: Aluminium.

L
Thread
Size

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 6

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Air Rod Ridge Saddles

Ridge saddles are used to support air rods on roof ridges.

ASGR 16M For use with Copper Air Rods

Thread L H Unit Pack Part
Size mm mm Weight Quantity Number
kg
M16 137 34 0.70 5 ASGR 16M

Material: Gunmetal.

For use with Aluminium Air Rods

ASAR 16M Thread L H Unit Pack Part

Size mm mm Weight Quantity Number
kg
M16 137 34 0.70 5 ASAR 16M

Material: Aluminium.
L

Thread
Size

Flat Air Rod Saddles

Flat saddles are used to support air rods on flat roof surfaces.
For use with Copper Air Rods
ASGF 16M
Thread L H Unit Pack Part
Size mm mm Weight Quantity Number
kg
M16 137 40 0.60 5 ASGF 16M

Material: Gunmetal.

For use with Aluminium Air Rods

ASAF 16M Thread L H Unit Pack Part

Size mm mm Weight Quantity Number
kg
M16 137 40 0.20 5 ASAF 16M

Material: Aluminium.

Thread
Size

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 7

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Side Mounting Air Rod Brackets

These brackets provide a 75mm projection from the building face and
are used where it is not possible to fit a saddle onto the building roof.
The brackets are used in conjunction with the rod to tape coupling
used to secure the flat tape to the air rod.
For use with Copper Air Rods
Rod Ø L W Unit Pack Part
mm mm mm Weight Quantity Number
kg
16 0.39 AMBG 16
97 120 5
20 0.43 AMBG 20 AMBG 16
AMBA 16
Material: Gunmetal.

For use with Aluminium Air Rods

Rod Ø L W Unit Pack Part
mm mm mm Weight Quantity Number
kg
16 97 120 0.12 5 AMBA 16
Material: Aluminium.
W W

Rod to Tape Couplings

Enables the flat tape to be connected to the air rod. Used in conjunction
with the side mounting air rod brackets.
For use with Copper Air Rods
Thread L D Unit Pack Part
Size mm mm Weight Quantity Number
kg
M16 AOG 16M
80 40 0.22 5
M20 AOG 20M
AOG 16M
Material: Gunmetal.
AOA 16M
For use with Aluminium Air Rods
Thread L D Unit Pack Part
Size mm mm Weight Quantity Number
kg
M16 80 40 0.10 5 AOA 16M

Material: Aluminium.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 8

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Metallic DC Clips
DCB 253
Metallic DC clips secure the flat tape conductor to the building surface.
Fix using countersunk woodscrew 11/2” x No. 10 and No. 10 wall plug.
For use with Bare Copper Tapes
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
DGG 383
20 x 3 50 10 0.06 50 DCG 203
25 x 3 50 10 0.06 50 DCB 253
25 x 4 50 10 0.06 50 DCG 254
25 x 6 50 12 0.06 50 DCG 256
31 x 3 60 10 0.08 25 DCG 313
DCB 506 31 x 6 60 13 0.09 25 DCG 316
38 x 3 64 20 10 0.08 25 DCG 383
38 x 5 64 13 0.10 25 DCG 385
38 x 6 64 13 0.10 25 DCG 386
50 x 3 80 10 0.10 25 DCG 503

DCA 253 50 x 4 80 11 0.10 25 DCG 504

50 x 6 80 14 0.14 25 DCB 506
50 x 8 80 14 0.14 25 DCG 508
Material: Gunmetal.

For use with PVC Covered Copper Tapes

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 55 14 0.06 DGP 253
25 x 6 58 20 18 0.11 25 DGP 256
50 x 6 91 19 0.20 DGP 506
Material: Gunmetal.

For use with Lead Covered Copper Tape

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 77 27 25 0.34 25 DCL 253
Material: Phosphor Bronze.

L For use with Bare Aluminium Tapes

D
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
W mm kg
25 x 3 55 10 0.02 DCA 253
H 25 x 6 50 20 13 0.03 25 DCA 256
50 x 6 80 16 0.04 DCA 506
L
Material: Aluminium.

For use with PVC Covered Aluminium Tapes

W Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 55 20 0.03 DAP 253
20 25
L 50 x 6 85 23 0.04 DAP 506
Material: Aluminium.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:02 Page 9

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Non-Metallic DC Clips
This one-piece clip, with integral hinged lid, means no lost or dropped
lids. The clips are UV stabilised to prevent degradation from sunlight
and are non-brittle to protect against cold weather.
Fix using countersunk woodscrew 11/2” x No. 10 and No. 10 wall plug.
For use with Bare Copper Tapes
Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg NP 253 BL
20 x 3 55 18 16 NM 203 B
25 x 3 50 18 16 Brown 0.01 100 NM 253 B
50 x 6 80 25 26 NM 506 B*

Material: Polypropylene.
* NM506B is a two-piece clip
NP 253 W

For use with Bare Aluminium Tapes

Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
20 x 3 NM 203 G NP 253 G
50 18 16 Grey 0.01 100
25 x 3 NM 253 G
Material: Polypropylene.

For use with PVC Covered Copper & Aluminium Tapes

Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
Brown NP 253 B NP 253 GR
Black NP 253 BL
Grey NP 253 G
25 x 3 50 18 16 0.01 100
Green NP 253 GR
Stone NP 253 S
White NP 253 W NP 253 B

Material: Polypropylene.

NP 253 S

L W

W H

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LIGHTNING PROTECTION FLAT TAPE SYSTEM

Non-Metallic DC Clips with Plug

These one-piece clips have an integral fixing plug for ease of installation.
The clips are UV stabilised to prevent degradation from sunlight and are
non-brittle to protect against cold weather.
Fix using countersunk woodscrew 11/2” x No. 10.
NPP 253 BL For use with Bare Copper Tapes
Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
20 x 3 NMP 203 B
50 18 16 Brown 0.01 100
25 x 3 NMP 253 B
NPP 253 W Material: Polypropylene.

For use with Bare Aluminium Tapes

Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
NPP 253 G mm kg
20 x 3 NMP 203 G
50 18 16 Grey 0.01 100
25 x 3 NMP 253 G
Material: Polypropylene.

For use with PVC Covered Copper & Aluminium Tapes

NPP 253 GR
Conductor L W H Colour Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
Brown NPP 253 B
Black NPP 253 BL
NPP 253 B
Grey NPP 253 G
25 x 3 50 18 16 0.01 100
Green NPP 253 GR
Stone NPP 253 S
White NPP 253 W
Material: Polypropylene.

NPP 253 S

L W

H W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 11

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Tape Clips
Wallis tape clips hold the flat tape conductor flush to the building surface.
Fix using countersunk woodscrews 11/2” x No. 10 and No. 10 wall plugs.
For use with Bare Copper Tapes
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg MTB 253
20 x 3 68 7 0.03 MTB 203
25 x 3 70 20 7 0.03 50 MTB 253
50 x 6 73 8 0.05 MTB 506
Material: Copper.

For use with PVC Covered Copper Tapes

MPB 253
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 70 20 7 0.03 50 MPB 253
Material: Copper.

For use with Bare Aluminium Tapes

Conductor L W H Unit Pack Part MTA 253
Size mm mm mm Weight Quantity Number
mm kg
20 x 3 68 MTA 203
20 7 0.01 50
25 x 3 70 MTA 253

Material: Aluminium.

For use with PVC Covered Aluminium Tapes MAP 253

Conductor L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm kg
25 x 3 70 20 7 0.01 50 MAP 253
Material: Aluminium.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 12

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Slate Holdfasts
Wallis slate holdfasts provide a method for fixing the tape above the
roof tiles without any drilling.
The aluminium tail slides underneath the tile and is fixed to the wooden
beam with a nail, the non-metallic DC clip then protrudes from under
HSAL 253BL the tile and offers a fixing for the tape.
For use with Bare Copper & Aluminium Tapes
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown HSAL 253 BM
25 x 3 300 50 16 0.04 50
Grey HSAL 253 GM

Material: Polypropylene clip with Aluminium tail.

HSAL 253G
For use with PVC Covered Copper & Aluminium Tapes
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown HSAL 253 B
Black HSAL 253 BL
25 x 3 300 50 16 Grey 0.04 50 HSAL 253 G
HSAL 253B Stone HSAL 253 S
White HSAL 253 W

Material: Polypropylene clip with Aluminium tail.

HSAL 253S

HSAL 253W

W
L
H

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 13

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Weldable DC Clips
Comprises a weldable base assembled with a non-metallic DC clip. For
use on PVC roofing membranes. See page 55 for details of Universal
Welding Solvent.
For use with Bare Tape
Conductor D H Clip Unit Pack Part
Size mm mm Colour Weight Quantity Number
mm kg
25 x 3 65 23 Grey 0.03 50 WDC 080

Material: PVC base with Polypropylene clip.

For use with PVC Covered Tapes WDC 080

Conductor D H Clip Unit Pack Part

Size mm mm Colour Weight Quantity Number
mm kg
Black WDC 120
25 x 3 65 23 0.03 50
Grey WDC 140

Material: PVC base with Polypropylene clip.

WDC 120

H D

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LIGHTNING PROTECTION FLAT TAPE SYSTEM

Adhesive DC Clips
Comprises an adhesive base assembled with a non-metallic DC clip.
For use on surfaces other than PVC roofing. See page 55 for details of
Surface Primer.

For use with Bare Copper & Aluminium Tapes

Conductor D H Clip Unit Pack Part

Size mm mm Colour Weight Quantity Number
mm kg
Brown ADC 060
25 x 3 65 23 0.03 50
Grey ADC 080
ADC 080
Material: Polycarbonate base with Polypropylene clip.

For use with PVC Covered Copper & Aluminium Tapes

Conductor D H Clip Unit Pack Part
Size mm mm Colour Weight Quantity Number
mm kg
ADC 060 Brown ADC 100
Black ADC 120
25 x 3 65 23 Grey 0.03 50 ADC 140
Stone ADC 160
White ADC 180

Material: Polycarbonate base with Polypropylene clip.

ADC 180

ADC 120

ADC 160

H D

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 15

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Universal Welding Solvent, Cleaning Solution

& Surface Primer
Type Unit Pack Part
Weight Quantity Number
kg
Universal Welding Solvent 500ml spray
applicator for use with weldable DC clips 0.57 UWS 001
Sufficient for application of approx. 200 clips
Cleaning Solution (Acetone)
500ml spray applicator for cleaning 0.62 1 CSA 001
lacquered roofing membranes
Surface Primer 250ml spray applicator
for use with adhesive DC clips 0.24 PRIMER
Sufficient for application of approx. 500 clips

CoSHH datasheets are available on request.

PRIMER

UWS 001

CSA 001

Bitumen Felt DC Clips

For use on bitumen felt roofing only.
For use with Bare Copper & Aluminium Tapes
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown BDC 060
25 x 3 100 100 23 0.06 50
Grey BDC 080

Material: Bitumen Felt base with Polypropylene clip.

For use with PVC Covered Copper & Aluminium Tapes

BDC 060
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown BDC 100
Black BDC 120
Grey BDC 140
25 x 3 100 100 23 0.06 50
Stone BDC 160
White BDC 180
Green BDC 200

Material: Bitumen Felt base with Polypropylene clip.

L
H

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LIGHTNING PROTECTION FLAT TAPE SYSTEM

Glazing Bar Holdfasts

Originally designed to be used on glazing units but can be installed
wherever conductor has to be fixed onto a narrow flange. The holdfast
is assembled with a fixing screw for use with a metallic or non-metallic
DC clip.
For use with Copper Tapes
HGG 253 L W H Unit Pack Part
mm mm mm Weight Quantity Number
kg
35 22 20 0.12 10 HGG 253
Material: Gunmetal.

For use with Aluminium Tapes

HGA 253
L W H Unit Pack Part
mm mm mm Weight Quantity Number
kg
35 22 20 0.04 10 HGA 253
Material: Aluminium.

H W

Back Plate Holdfasts

Designed to be used where it is necessary to hold the conductor away
from the building surface. The holdfast is assembled with a fixing screw
for use with a metallic or non-metallic DC clip.
For use with Copper Tapes
L D Unit Pack Part
HBG 001
mm mm Weight Quantity Number
kg
74 63 0.33 5 HBG 001
Material: Gunmetal.
For use with Aluminium Tapes
L D Unit Pack Part
mm mm Weight Quantity Number
kg
74 63 0.15 5 HBA 001
Material: Aluminium.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 17

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Square Tape Clamps

These Wallis four-way connectors are suitable for making cross, straight
through or tee joints in flat tape. The base has a countersunk hole in the
middle for securing the clamp to the building surface and the lid is fixed
by means of four screws.
Fix using countersunk woodscrew 11/2” x No. 10 and No. 10 wall plug.
JG253
For use with Bare Copper Tapes
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 50 50 13 0.15 25 JG 253
25 x 6 50 50 20 0.25 25 JG 256
31 x 3 60 60 14 0.22 25 JG 313 JG 506
38 x 6 71 71 22 0.59 25 JG 386
50 x 3 80 80 16 0.50 10 JG 503
50 x 6 79 79 22 0.52 10 JG 506
Material: Gunmetal.

For use with Lead Covered Copper Tape

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg JPB 253L

25 x 3 70 70 25 0.86 25 JPB 253 L

Material: Phosphor Bronze.

For use with Bare Aluminium Tape

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg JA 253

25 x 3 50 50 13 0.07 25 JA 253
Material: Aluminium.

W W

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LIGHTNING PROTECTION FLAT TAPE SYSTEM

Oblong Junction Clamps

Designed to join a range of tape sizes in a straight through position. In
many applications the clamp enables tapes to be overlapped and
secured by the two set screws.
For use with Bare Copper Tapes
Maximum L W H Unit Pack Part
Conductor Size mm mm mm Weight Quantity Number
JGO 253 W mm kg
26 x 8 68 40 23 0.34 JGO 253 W
10
51 x 10 90 63 26 0.58 JGO 506 W
Material: Gunmetal.

For use with Lead Covered Copper Tape

Maximum L W H Unit Pack Part
Conductor Size mm mm mm Weight Quantity Number
mm kg
26 x 8 90 45 24 0.34 10 JPBO 253 L
JGO 506 W
Material: Phosphor Bronze.

For use with Bare Aluminium Tape

Maximum L W H Unit Pack Part
Conductor Size mm mm mm Weight Quantity Number
mm kg
26 x 8 68 40 23 0.11 10 JAO 253
Material: Aluminium.

JPBO 253 L

JAO 253

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 19

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Plate Type Test Clamps

This Wallis clamp is used to form a disconnecting joint between the
down conductor and earthing system.
There are two wall fixing holes on the bottom plate. Fix using JPA 253
countersunk woodscrews 11/2” x No. 10 and No. 10 wall plugs.
For use with Copper Tapes
Maximum D H Unit Pack Part
Conductor mm mm Weight Quantity Number
Size kg
mm
26 x 15 70 38 0.40 5 JPG 253
Material: Gunmetal.
For use with Aluminium Tapes JPG 253
Maximum D H Unit Pack Part
Conductor mm mm Weight Quantity Number
Size kg
mm
26 x 15 70 38 0.10 5 JPA 253

Material: Aluminium.

Screw Down Test Clamp

The screw down test clamp allows easy access to copper conductors
where frequent inspection and testing may be necessary.
For use with Copper Tapes
Maximum D Unit Pack Part
Conductor Size mm Weight Quantity Number
mm kg
26 x 8 61 0.72 5 JSG 253

Material: Gunmetal.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:03 Page 20

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Bimetallic Connectors
These connectors are used to join aluminium and copper tapes
together. They are a neat and practical jointing method without the
need for tinning, riveting or wrapping the joint.
Fix using countersunk woodscrew 11/2” x No. 10 wall plug.

Conductor Material L W H Unit Pack Part

Size Type mm mm mm Weight Quantity Number
mm kg
Aluminium &
Copper 98 29 25 0.20 BIM 253
25 x 3 10
BSS 253
Stainless Steel 76 21 20 0.16 BSS 253

BIM 253

L W

‘B’ Bonds
This Wallis ‘B’ bond is used for bonding aluminium and copper tapes to
flat metal surfaces.
For use with Copper Tapes

Conductor L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm kg
25 x 3 35 35 10 0.03 10 BBG 253 SS

BBG 253 SS Material: Gunmetal with M10 x 35mm Stainless Steel Set Screw.

For use with Aluminium Tapes

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
25 x 3 35 35 10 0.01 10 BBA 253

Material: Aluminium with M10 x 35mm Stainless Steel Set Screw.

BBA 253

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 21

LIGHTNING PROTECTION FLAT TAPE SYSTEM

Watermain Pipe Bond

Designed to bond large diameter metallic pipes into the earthing and
lightning protection systems.
For use with Bare Copper Tapes
Maximum L W Unit Pack Part
Conductor mm mm Weight Quantity Number
Width kg
mm
26 45 36 0.21 10 BWG 253

Material: Gunmetal with M10 x 35mm Phosphor Bronze Set Screw.

W L

Rainwater Pipe Bond

This pipe bond can be used on any application where tape can be
wrapped around circular objects such as pipes or rails.
For use with Bare Copper Tapes
Maximum L W H Unit Pack Part
Conductor mm mm mm Weight Quantity Number
Width kg
mm BRG 253
26 32 32 16 0.20 10 BRG 253

Material: Gunmetal with M10 x 40mm Stainless Steel Set Screw.

For use with Bare Aluminium Tapes

Maximum L W H Unit Pack Part
Conductor mm mm mm Weight Quantity Number
Width kg
mm
BRA 253
26 32 32 16 0.10 10 BRA 253

Material: Aluminium with M10 x 40mm Stainless Steel Set Screw.

H
W

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Air Rods
These air rods are used as part of the lightning protection system. They
are manufactured from 10mm diameter rod and are supplied with a
locknut.
Copper Air Rods
Thread L Unit Pack Part
Size mm Weight Quantity Number
kg
500 0.35 ARC 102
M10 5
ARC 102 1000 0.70 ARC 105
Material: Copper.

Aluminium Air Rods

ARA 102
Thread L Unit Pack Part
Size mm Weight Quantity Number
kg
500 0.11 ARA 102
M10 5
1000 0.22 ARA 105
Material: Aluminium.

Thread
Size

Multi-Purpose Air Rod Saddles

These saddles can be installed horizontally on roofs or vertically on
walls or parapets and are used in conjunction with the air rods shown
above. The saddles are suitable for use with 8mm diameter solid circular
conductor as well as 25 x 3mm flat tape.

UAG 253 For use with Copper Air Rods

Thread L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
kg
M10 54 54 38 0.30 5 UAG 253

Material: Gunmetal.
For use with Aluminium Air Rods
Thread L W H Unit Pack Part
UAA 253 Size mm mm mm Weight Quantity Number
kg
M10 54 54 38 0.10 5 UAA 253

Material: Aluminium.

W
H

L L

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 23

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Slate Holdfasts
Wallis slate holdfasts provide a method of fixing solid circular conductor
above roof tiles without any drilling.
The aluminium tail slides underneath the tile and is fixed to the wooden
beam with a nail, the push-in roof clip then protrudes from under the
tile and offers a fixing for the conductor.
For use with Bare Solid Circular Conductors
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown HA 08 B
8 320 18 14 0.04 50
Grey HA 08 G

Material: Polypropylene clip with Aluminium tail.

For use with PVC Covered Solid Circular Conductors HA 08 B

Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown HA 10 B
Black HA 10 BL
8 320 18 14 0.04 50
Grey HA 10 G
Stone HA 10 S HA 10 BL
White HA 10 W

Material: Polypropylene clip with Aluminium tail.

HA 10 G

HA 10 S

HA 10 W

W
H

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

One Hole Conductor Clips

One hole conductor clips provide an easy method of fixing copper and
aluminium conductors to surfaces.
Fix using round head woodscrew 11/2” x No. 10 and No. 10 wall plug
For use with Solid Circular Copper Conductors
PCC 001
Conductor L W H Unit Pack Part
Size & mm mm mm Weight Quantity Number
Type kg
8mm Bare 31 12 12 PCC 001
0.01 50
8mm PVC 41 20 15 PCC 002

Material: Copper.

PCA 001
For use with Solid Circular Aluminium Conductors
Conductor L W H Unit Pack Part
Size & mm mm mm Weight Quantity Number
Type kg
8mm Bare 31 12 12 PCA 001
0.01 50
8mm PVC 41 20 15 PCA 002

Material: Aluminium.

L W

Metallic Conductor Clips

Metallic conductor clips secure the solid circular conductor to the
building surface. The larger sizes can also be used to support the
10mm air rods shown on page 62. Fix using countersunk
woodscrew 11/2” x No. 10 and No. 10 wall plug.
DCG 810
For use with Solid Circular Copper Conductors
Conductor L W H Unit Pack Part
Size & mm mm mm Weight Quantity Number
Type kg
8mm Bare DCG 810
48 17 20 0.06 25
8mm PVC DCG 815

Material: Gunmetal.
DCA 810 For use with Solid Circular Aluminium Conductors
Conductor Unit
Size & L W H Weight Pack Part
Type mm mm mm kg Quantity Number

8mm Bare DCA 810

48 17 20 0.03 25
8mm PVC DCA 815

Material: Aluminium.

H W

L
L

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 25

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Non-Metallic Down Conductor Clips

A one-piece fold over clip designed for easy installation of solid circular
conductor. The clips are UV stabilised to prevent degradation from
sunlight and are non-brittle to protect against cold weather.
For use with Bare Solid Circular Conductors
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg CP 08 BL CM 08 B
Brown CM 08 B
8 34 23 33 0.01 100
Grey CM 08 G
Material: Polypropylene.
For use with PVC Covered Solid Circular Conductors
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg CP 08 S

Brown CP 08 B
Black CP 08 BL
8 34 23 33 Grey 0.01 100 CP 08 G
Stone CP 08 S
White CP 08 W

Material: Polypropylene. L

H
W

Push-in Roof Conductor Clips RM 08 B

A one-piece single screw fixing clip designed for easy installation of solid
circular conductors. The clips are UV stabilised to prevent degradation
from sunlight and are non-brittle to protect against cold weather.
For use with Bare Solid Circular Conductors
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown RM 08 B RP 08 G
8 29 18 14 0.01 100
Grey RM 08 G
Material: Polypropylene.
For use with PVC Covered Solid Circular Conductors RP 08 W
Conductor L W H Clip Unit Pack Part
Size mm mm mm Colour Weight Quantity Number
mm kg
Brown RP 08 B
Black RP 08 BL
8 29 18 14 Grey 0.01 100 RP 08 G
Stone RP 08 S
White RP 08 W

Material: Polypropylene. W

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

‘MV’ Clamps
MVG 08
These Wallis four-way connectors are suitable for crossing over, making
straight joints and tee connections in solid circular conductor.
For use with Bare Solid Circular Copper Conductor
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 40 40 18 0.05 10 MVG 08

MVA 08 Material: Copper.

For use with Bare Solid Circular Aluminium Conductor

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 40 40 18 0.01 10 MVA 08

Material: Aluminium.

‘T’ Connector Clamps

This purpose-designed ‘T’ connector clamp is ideal for connecting the
roof network to the down conductors of an 8mm solid circular lightning
TCG 08 protection system.

For use with Bare Solid Circular Copper Conductor

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 45 45 19 0.11 10 TCG 08
TCA 08 Material: Gunmetal.
For use with Bare Solid Circular Aluminium Conductor
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 44 25 20 0.06 10 TCA 08

Material: Stainless Steel.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 27

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Interface Test Clamps

This Wallis clamp is used for connecting flat tape to solid circular
conductor, for example where the lightning protection system has been
designed in 8mm copper conductor but the connection to the earth rod
is made using 25 x 3mm copper tape.
It will also serve for making through joints and tee connections in 8mm
solid circular conductor.
For use with Bare Copper Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg JYG 08
8 & 25 x 3 70 34 15 0.25 25 JYG 08
JYA 08
Material: Gunmetal.
For use with Bare Aluminium Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 & 25 x 3 70 34 15 0.09 25 JYA 08

Material: Aluminium.
H

Solid Circular to Tape Connectors

This Wallis four-way connector is suitable for crossing over flat tape and JOM 253
solid circular conductor. It will also serve for making straight through
joints and tee connections.
For use with Bare Copper Conductors
Conductor L W H Unit Pack Part
Sizes mm mm mm Weight Quantity Number
mm kg JOA 253

8 & 25 x 3 52 52 14 0.28 25 JOM 253

Material: Gunmetal.

For use with Bare Aluminium Conductors

Conductor L W H Unit Pack Part
Sizes mm mm mm Weight Quantity Number
mm kg
8 & 25 x 3 52 52 14 0.09 25 JOA 253
Material: Aluminium.

H
W

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Metalwork Bonding Clamps

These clamps are designed for bonding 8mm solid circular conductors
onto metal surfaces.
For use with Bare Solid Circular Copper Conductor
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 82 40 25 0.14 10 MBG 08

Material: Copper.

For use with Bare Solid Circular Aluminium Conductor

MBG 08 Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
MBA 08 8 82 40 25 0.09 10 MBA 08

Material: Aluminium.

Bimetallic Connectors
BIM 25308
These connectors are used to join 8mm aluminium and copper solid
circular conductors together. They are a neat and practical jointing
method without the need for tinning, riveting or wrapping the joint.

Conductor Type L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm kg
Aluminium &
Copper 78 28 28 0.25 BIM 08
8 10
BIM 08 Stainless Steel 71 22 19 0.09 BSS 08

We also offer a connector suitable for joining 8mm aluminium solid

circular conductor to 25 x 3mm copper tape.

Conductor Type L W H Unit Pack Part

Sizes mm mm mm Weight Quantity Number
mm kg
8 to Aluminium &
Copper 78 28 29 0.20 10 BIM 25308
25 x 3

H L
H

L W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 29

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Rainwater Pipe Bonds

This pipe bond can be used on any application where the perforated
tape can be wrapped around circular objects such as pipes or rails etc.
For use with Bare Solid Circular Copper Conductor
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 55 32 17 0.37 5 BRG 08

Material: Gunmetal with Perforated Copper Tail.

For use with Bare Solid Circular Aluminium Conductor

BRG 08
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 51 31 16 0.09 5 BRA 08

Material: Aluminium with Perforated Steel Tail.

W
H

Circular ‘B’ Bonds

This Wallis bond is used for bonding 8mm solid circular conductors to BBG 08
flat metal surfaces. BBA 08

For use with Bare Solid Circular Copper Conductor

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 52 33 18 0.14 10 BBG 08

Material: Gunmetal.

For use with Bare Solid Circular Aluminium Conductor

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 52 33 18 0.09 10 BBA 08

Material: Aluminium.

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LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Tower Earth Clamps

These single-plate tower earth clamps are used for bonding copper and
aluminium conductors onto steel surfaces. The clamp is fixed by drilling
a hole in the steelwork and securing with the set screw provided.
BTC 008
For use with Bare Solid Circular Copper Conductor
Conductor L W H Set Unit Pack Part
Size mm mm mm Screw Weight Quantity Number
mm kg
8 34 23 33 M10 x 50mm 0.09 10 BTC 008
Material: Gunmetal.

For use with Bare Solid Circular Aluminium Conductor

Conductor L W H Set Unit Pack Part
Size mm mm mm Screw Weight Quantity Number
mm kg
8 40 22 12 M10 x 50mm 0.05 10 BTA 008
Material: Aluminium.

Multi-Purpose ‘B’ Bonds

This Wallis Multi-Purpose ‘B’ Bond can be used for bonding both 25 x 3mm
flat tape and 8mm diameter solid circular conductor to flat metal surfaces.
For use with Bare Copper Conductors
BBG 25308 Conductor L W H Set Unit Pack Part
Sizes mm mm mm Screw Weight Quantity Number
mm kg
8 & 25 x 3 34 34 13 M8 x 25mm 0.09 25 BBG 25308
Material: Gunmetal.

For use with Bare Aluminium Conductors

Conductor L W H Set Unit Pack Part
Sizes mm mm mm Screw Weight Quantity Number
BBA 25308 mm kg
8 & 25 x 3 34 34 13 M8 x 25mm 0.04 25 BBA 25308
Material: Aluminium.

W
H

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 31

LIGHTNING PROTECTION SOLID CIRCULAR SYSTEM

Pyramid Holdfast
The Pyramid Holdfast is designed to support 8mm diameter bare solid
circular conductors on flat roofs.
Manufactured from black weather-resistant plastic and filled with frost-
proof concrete. The lip around the base enables the holdfast to be
installed onto bitumen type roofs.
For use with Bare Solid Circular Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm kg
8 180 130 70 1.00 12 HPY 008
Material: Plastic filled with Concrete.

W L

Circular Conductor Shoes

Used to bond 8mm bare solid circular conductors to metal surfaces.

For use with Bare Solid Circular Copper Conductor

Conductor Palm L W H Set Unit Pack Part GCS 008
Size Hole Ø mm mm mm Screws Weight Quantity Number
mm mm kg
8 12 61 23 25 M6 x 12mm 0.10 25 GCS 008
Material: Gunmetal.

For use with Bare Solid Circular Aluminium Conductor

Conductor Palm L W H Set Unit Pack Part
Size Hole Ø mm mm mm Screws Weight Quantity Number ACS 008
mm mm kg
8 12 61 23 25 M6 x 12mm 0.04 25 ACS 008
Material: Aluminium.

H W

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LIGHTNING PROTECTION CABLE & WIRE SYSTEM

ATC 120M Taper Pointed Air Rods

Air rods form an important part of the air termination network of a
lightning protection system. All of our copper air rods are supplied with
a brass locknut enabling the rod to be locked tight against the
ATC 220M conductor. Please see pages 73 - 74 for further information on our range
of saddles, brackets and couplings.
Thread L L1 Unit Pack Part
Size mm mm Weight Quantity Number
kg
300 0.53 ATC 112M
500 0.85 ATC 120M
M16 1000 41 1.70 5 ATC 139M
1500 2.59 ATC 160M
2000 3.47 ATC 179M
Material: Copper.

Thread Size

L1

Multi-Point
Used in conjunction with the taper pointed copper air rods.
Air H W Unit Pack Part
Rod Ø mm mm Weight Quantity Number
mm kg
16 156 72 0.30 5 MPC 16

Material: Gunmetal base with Copper spikes.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:04 Page 33

LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Side Mounting Air Rod Brackets

These brackets provide a 75mm projection from the building face and
are used where it is not possible to fit a saddle onto the building roof.
The brackets are used in conjunction with the rod to cable coupling
used to secure the cable to the air rod.
For use with Copper Air Rods
Rod Ø L W Unit Pack Part
mm mm mm Weight Quantity Number
kg
16 97 120 0.39 5 AMBG 16
AMBG 16
Material: Gunmetal.

W W

Rod to Cable Couplings

Enables the stranded cable to be connected to the air rod. Used in
conjunction with the side mounting air rod brackets.

Conductor Thread L D Unit Pack Part

Size Size mm mm Weight Quantity Number
mm2 kg
50 0.25 AOG 050
70 M16 80 40 0.25 5 AOG 070
95 0.22 AOG 070

Material: Gunmetal.

AOG 070

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LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Air Rod Cable Saddles

These saddles are used to support the copper taper pointed air rods on
flat roof surfaces.

Conductor Thread L W H Unit Pack Part

Size Size mm mm mm Weight Quantity Number
mm2 kg
50 1.10 ASGF 050
70 M16 85 85 65 1.00 5 ASGF 070
95 0.90 ASGF 095
Material: Gunmetal.

ASGF 050

L
H

Cable Shoes
Used to bond stranded copper conductors to metal surfaces.

Conductor Palm L W H Set Unit Pack Part

Size Hole Ø mm mm mm Screws Weight Quantity Number
mm2 mm kg
50 23 25 0.10 GCS 050
70 12 61 25 27 M6 x 12mm 0.12 25 GCS 070
95 27 29 0.14 GCS 095
Material: Gunmetal.

H W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 35

LIGHTNING PROTECTION CABLE & WIRE SYSTEM

One Hole Cable Clips

Wallis one hole cable clips provide an easy method of fixing stranded
copper conductors to surfaces.
For use with Bare Stranded Copper Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm2 kg
6 10 10 5 0.01 PCC 006
10 10 10 5 0.01 PCC 010
PCC 010
16 15 10 5 0.01 PCC 016
25 15 10 8 0.01 PCC 025
35 18 10 8 0.01 PCC 035
50 18 10 10 0.01 PCC 050
70 22 10 10 0.01 50 PCC 070
95 22 10 13 0.01 PCC 095
120 25 15 15 0.01 PCC 120
150 25 15 15 0.02 PCC 150
185 30 15 20 0.02 PCC 185
240 30 20 20 0.02 PCC 240
300 35 20 25 0.02 PCC 300 PCC 050

Material: Copper.

For use with PVC Insulated Stranded Copper Conductors

Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm2 kg
6 10 10 5 0.01 PCP 006
10 10 10 7 0.01 PCP 010
16 15 10 7 0.01 PCP 016
25 15 10 10 0.01 PCP 025
35 18 10 10 0.01 PCP 035
50 18 10 15 0.01 PCP 050 PCP 300

70 22 10 15 0.01 50 PCP 070

95 22 10 15 0.01 PCP 095
120 25 15 20 0.01 PCP 120
150 25 15 20 0.02 PCP 150
185 30 15 25 0.02 PCP 185
240 30 20 25 0.02 PCP 240
300 35 20 30 0.02 PCP 300

Material: Copper.

L W

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LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Metallic Cable Clips

Metallic cable clips secure the stranded copper conductor to the
building surface.
Fix using countersunk woodscrew 11/2” x No. 10 and No. 10 wall plug.
DCG 006
For use with Bare Stranded Copper Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm2 kg
6 35 15 12 0.03 50 DCG 006
10 35 15 12 0.03 50 DCG 010
16 35 15 15 0.04 50 DCG 016
25 35 15 15 0.04 50 DCG 025
35 46 17 17 0.05 50 DCG 035
DCG 025
50 46 17 17 0.05 50 DCG 050
70 46 17 19 0.06 25 DCG 070
95 46 17 21 0.06 25 DCG 095
120 60 20 23 0.07 25 DCG 120
150 60 20 24 0.07 25 DCG 150
185 60 20 26 0.08 25 DCG 185
240 60 20 29 0.09 25 DCG 240
300 60 20 31 0.09 25 DCG 300

Material: Gunmetal.
DCG 150
For use with PVC Insulated Stranded Copper Conductors
Conductor L W H Unit Pack Part
Size mm mm mm Weight Quantity Number
mm2 kg
6 35 15 14 0.03 50 DGP 006
10 35 15 14 0.03 50 DGP 010
16 35 15 17 0.04 50 DGP 016
25 35 15 17 0.04 50 DGP 025
35 46 17 19 0.05 50 DGP 035
50 46 17 19 0.05 50 DGP 050
70 46 17 21 0.06 25 DGP 070
95 46 17 23 0.06 25 DGP 095
120 60 20 25 0.07 25 DGP 120
150 60 20 26 0.07 25 DGP 150
185 60 20 28 0.08 25 DGP 185
240 60 20 31 0.09 25 DGP 240
300 60 20 33 0.09 25 DGP 300

Material: Gunmetal.

H W

L
L

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 37

LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Square Cable Clamps

These Wallis four-way connectors are suitable for making cross, straight
through or tee joints in stranded copper conductor.

Conductor L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm2 kg
50 50 50 30 0.30 JGC 050
70 53 53 33 0.27 25 JGC 070
95 55 55 35 0.22 JGC 095

Material: Gunmetal.

JGC 070

L
H

Universal Cable Connectors

This connector is suitable for joining cables in a test point as part of the
lightning protection system.
The base has a countersunk hole in the middle for securing the
connector to the building surface. Fix using countersunk woodscrew
11/2” x No. 10 and No. 10 wall plug.

Conductor L W H Unit Pack Part

Size mm mm mm Weight Quantity Number
mm2 kg
50 0.15 UCC 050
70 71 21 19 0.17 25 UCC 070
95 0.19 UCC 095
UCC 070
Material: Naval Brass.

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LIGHTNING PROTECTION CABLE & WIRE SYSTEM

Tower Earth Clamps

These double-plate tower earth clamps are used for bonding stranded
copper conductors onto steel surfaces. The clamp is fixed by drilling a
hole in the steelwork and securing with the set screw provided.

Conductor Range L W H Set Unit Pack Part

mm2 mm mm mm Screw Weight Qty Number
16 - 70 45 30 17 M10 x 50mm 0.12 BTC 070
10
70 - 120 48 35 22 M12 x 60mm 0.23 BTC 120
BTC 120
Material: Gunmetal.

BTC 070

H
L

Cable to Tape Connectors

This Wallis four-way connector is suitable for crossing over flat copper
tape and bare stranded copper cable. It will also serve for making
straight through joints and tee connections.

Cable Tape L W H Unit Pack Part

JOM 050
Size Size mm mm mm Weight Qty Number
mm2 mm
50 52 52 14 0.28 JOM 050
70 25 x 3 54 54 16 0.33 25 JOM 070
95 56 56 18 0.39 JOM 095

Material: Gunmetal.

H
H
W

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 39

LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Strike Pads
This Wallis strike pad is used where it is not possible to install conductor
on the roof or side of a building. A typical application would be on the
roof of a car park where the conductor is laid underneath the tarmac SC 01
and the strike pads fitted on top. Supplied with a 40mm dowel and nut.
For use with Copper Conductor
D H Unit Pack Part
mm mm Weight Quantity Number
kg
122 40 0.60 5 SC 01
SA 01
Material: Gunmetal.

For use with Aluminium Conductor

D H Unit Pack Part
mm mm Weight Quantity Number
kg
122 40 0.20 5 SA 01
Material: Aluminium.

Interceptor Plates
These Wallis interceptor plates fit under the roof tile and are connected
into the lightning protection system. The square plate protrudes from the
tile and provides the interception point.
For use with Copper Conductor
L L1 W Unit Pack Part
mm mm mm Weight Quantity Number
kg
500 50 50 0.40 5 SPC

Material: Gunmetal. SPC

For use with Aluminium Conductor

L L1 W Unit Pack Part
mm mm mm Weight Quantity Number
SPA
kg
500 50 50 0.11 5 SPA

Material: Aluminium.
L1

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LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Oxide Inhibiting Compound

We recommend the use of an oxide inhibitor whenever aluminium
fittings are installed on a lightning protection system.
Penetrox electrical joint compound is a natural-petroleum based grease
that seals out oxygen and moisture on aluminium to aluminium and
aluminium to copper connections. It is not recommended for use with
rubber or polyethylene materials.

Description Unit Pack Part

Weight Quantity Number
kg
8oz plastic squeeze bottle 0.23 1 IC 08

CoSHH datasheet available on request.

Puddle Flanges
The puddle flange is used where the down conductor must pass
through a roof or waterproof membrane. The flats of the flange are
made waterproof by fixing with glue, concrete or specialist roofing
materials. See page 20 for our range of clamps suitable for use with
puddle flanges.
For use with Copper Conductor
L W Unit Pack Part
mm mm Weight Quantity Number
kg
600 150 x 150 1.68 1 PFC 01

PFC 01 Material: Copper.

For use with Aluminium Conductor
L W Unit Pack Part
mm mm Weight Quantity Number
kg
600 150 x 150 0.54 1 PFA 01

Material: Aluminium.

W L

80 A. N. WALLIS & Co. Ltd • Tel +44 (0)115 927 1721 • Fax +44 (0)115 875 6630 • E-mail info@an-wallis.com • Website www.an-wallis.com
Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 41

LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Wallis Sealing Tape

A waterproof tape for wrapping joints to provide protection
against corrosion.

Description Unit Pack Part

Weight Quantity Number
kg
50mm wide x 10m length roll 0.75 1 DT 510

Silfos
Silfos is an alloy of silver, phosphorous and copper. It is used to braze
copper to copper in air without the use of flux.
Description Unit Pack Part
Weight Quantity Number
kg
50mm x 0.12 x 8m length roll 0.50 1 SILFOS

CoSHH datasheet available on request.

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 42

LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Bitumen Felt Roll

Supplied in rolls for use on asphalt roofs.

Description Unit Pack Part

Weight Quantity Number
kg
100mm wide x 10m length roll 2.64 1 BFR 001

Green & Yellow PVC Insulating Tape

General-purpose insulating tape for electrical applications.

Description Unit Pack Part

Weight Quantity Number
kg
25mm wide x 33m length roll 0.14 1 GYT 2533

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 43

LIGHTNING PROTECTION MISCELLANEOUS PRODUCTS

Tinmans Solder
Tinmans commercial grade solder supplied by the kilogram
(4 sticks).

Description Unit Pack Part

Weight Quantity Number
kg
Tinmans Solder (4 sticks) 1.00 1 TMS 004

Material: 60% Tin, 40% Lead.

Flux
A well-established and reliable multi-purpose flux paste. It is designed
for engineering and sheet metal work, and is equally as effective for
soldering of copper products. Use with Tinmans Solder.

Description Unit Pack Part

Weight Quantity Number
kg
Fluxite soldering paste 100g tin 0.10 1 FLX 100

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 44

LIGHTNING PROTECTION FREE-STANDING AIR TERMINALS

Free-Standing Air Terminals

A range of free-standing lightning interception terminals for the
protection of roof-mounted equipment on surfaces where no penetration
of the roof structure for anchoring is allowed.
A multi-component, stackable system with screw retention to achieve
protection heights of up to 12m.
The Free-Standing Air Terminal system is designed to withstand wind
speeds of up to 190kmh (118mph). The table on page 86 details the
required components for installation in different wind speed zones. We
recommend that all concrete bases are installed using the Protective
Roof Pads (Wallis part number PRP 001).

Terminal Components Unit Pack Part

Height m Weight Qty Number
m kg

3.0 Two-piece: 1.5 + 1.5 5.0 ATF 030

3.5 Two-piece: 2.0 + 1.5 5.5 ATF 035
4.0 Two-piece: 2.5 + 1.5 7.0 ATF 040
4.5 Two-piece: 3.5 + 1.0 9.2 ATF 045
5.0 Two-piece: 3.5 + 1.5 10.0 ATF 050
5.5 Two-piece: 4.0 + 1.5 10.6 ATF 055
6.0 Three-piece: 2.0 + 2.0 + 2.0 18.0 ATF 060
6.5 Three-piece: 2.5 + 2.0 + 2.0 21.2 1 ATF 065
7.0 Three-piece: 3.0 + 2.0 + 2.0 23.5 ATF 070
7.5 Three-piece: 3.5 + 2.0 + 2.0 26.0 ATF 075
8.0 Three-piece: 4.0 + 2.0 + 2.0 28.7 ATF 080
9.0 Three-piece: 4.0 + 2.5 + 2.5 30.5 ATF 090
10.0 Three-piece: 5.0 + 2.5 + 2.5 35.5 ATF 010
11.0 Three-piece: 5.0 + 3.5 + 2.5 37.8 ATF 011
12.0 Three-piece: 6.0 + 3.5 + 2.5 42.9 ATF 012
Material: Stainless Steel with Aluminium tip.

84 A. N. WALLIS & Co. Ltd • Tel +44 (0)115 927 1721 • Fax +44 (0)115 875 6630 • E-mail info@an-wallis.com • Website www.an-wallis.com
Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 45

LIGHTNING PROTECTION FREE-STANDING AIR TERMINALS

Free-Standing Air Terminal Supports

A range of supports to suit the free-standing air terminals shown on
page 84. See table on page 86 for recommended component
configuration.
Square Plate Support
For use with air terminals up to 4m. Used in conjunction with square
concrete bases.
Terminal Terminal Required No. of Unit Pack Part ATS 001
Height Barrel Ø Mounting Concrete Weight Quantity Number
m mm Space Supports kg
mm
up to 4.0m 42 650 x 650 4 or 8 7 1 ATS 001
Material: Stainless Steel.

Tripod Supports
For use with air terminals between 4.5m and 10m. Used in conjunction
with round concrete bases.
Terminal Terminal Required No. of Unit Pack Part
Height Barrel Ø Mounting Concrete Weight Quantity Number
m mm Space Supports kg ATT 001
mm
4.5 - 5.5 42 1350 x 1350 3 8 ATT 001
6.0 - 8.0 60 1850 x 1850 6 25 1 ATT 002
9.0 - 10.0 60 1850 x 1850 10 40 ATT 003
Material: Stainless Steel.

Quad Support
For use with air-terminals between 11m and 12m. Used in conjunction with
round concrete bases. ATT 002

Terminal Terminal Required No. of Unit Pack Part

Height Barrel Ø Mounting Concrete Weight Quantity Number
m mm Space Supports kg
mm
11.0 - 12.0 60 3400 x 3400 17 159 1 ATQ 001
Material: Stainless Steel.

ATT 003

ATQ 001

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Wallis Cat 08 pt2 Singles.qxp 10/12/08 13:05 Page 46

LIGHTNING PROTECTION FREE-STANDING AIR TERMINALS

Concrete Bases
Square
Used in conjunction with the Square Plate Support.
Base Size Height Pack Part
Weight mm mm Quantity Number
kg
12 60 SCB 012
SCB 012 300 x 300 1
16 80 SCB 016

Material: Concrete.
Round
Used in conjunction with the Tripod and Quad Supports. Integral M16
Thread.
Base Ø Height Pack Part
Weight mm mm Quantity Number
kg
SCB 016
12 380 75 RCB 012
16 380 93 RCB 016
1
20 380 105 RCB 020
25 420 105 RCB 025

Material: Concrete.
Protective Roof Pad
Suit all sizes of round and square concrete bases. Protects waterproof
PRP 001 roofing membrane from damage.
Size Pack Part
mm Quantity Number
Ø 445 / 300 x 300 1 PRP 001

Material: Rubber.

Free-Standing Air Terminal System

Wind Speeds
Terminal Terminal
Height Part Up to 130 kmh (81 mph) Up to 150 kmh (93 mph) Up to 170 kmh (106 mph) Up to 190 kmh (118 mph)
m Number
Support Concrete Support Concrete Support Concrete Support Concrete
Bases Bases Bases Bases
3.0 ATF 030 ATS 001 SCB 012 x 4 ATS 001 SCB 012 x 4 ATS 001 SCB 012 x 4 ATS 001 SCB 012 x 4
3.5 ATF 035 ATS 001 SCB 012 x 4 ATS 001 SCB 012 x 4 ATS 001 SCB 016 x 4 ATS 001 SCB 016 x 4
4.0 ATF 040 ATS 001 SCB 012 x 4 ATS 001 SCB 016 x 4 ATS 001 SCB 012 x 8 ATS 001 SCB 016 x 8
4.5 ATF 045 ATT 001 SCB 016 x 3 ATT 001 RCB 020 x 3 ATT 001 RCB 025 x 3 ATT 002 RCB 012 x 6
5.0 ATF 050 ATT 001 SCB 016 x 3 ATT 001 RCB 020 x 3 ATT 001 RCB 025 x 3 ATT 002 RCB 012 x 6
5.5 ATF 055 ATT 001 SCB 020 x 3 ATT 001 RCB 025 x 3 ATT 002 RCB 012 x 6 ATT 002 RCB 012 x 6
6.0 ATF 060 ATT 002 RCB 012 x 6 ATT 002 RCB 012 x 6 ATT 002 RCB 012 x 6 ATT 002 RCB 016 x 6
6.5 ATF 065 ATT 002 RCB 012 x 6 ATT 002 RCB 012 x 6 ATT 002 RCB 016 x 6 ATT 002 RCB 025 x 6
7.0 ATF 070 ATT 002 RCB 012 x 6 ATT 002 RCB 016 x 6 ATT 002 RCB 020 x 6 * *
7.5 ATF 075 ATT 002 RCB 016 x 6 ATT 002 RCB 020 x 6 ATT 002 RCB 025 x 6 * *
8.0 ATF 080 ATT 002 RCB 020 x 6 ATT 002 RCB 025 x 6 ATT 003 RCB 025 x 10 * *
9.0 ATF 090 ATT 003 RCB 025 x 10 ATT 003 RCB 025 x 10 ATT 003 RCB 025 x 10 * *
10.0 ATF 010 ATT 002 RCB 025 x 10 ATT 002 RCB 025 x 10 * * * *
11.0 ATF 011 ATQ 001 RCB 025 x 17 ATQ 001 RCB 025 x 17 * * * *
12.0 ATF 012 ATQ 001 RCB 025 x 17 ATQ 001 RCB 025 x 17 * * * *
*Please contact our sales office for information and advice.

86 A. N. WALLIS & Co. Ltd • Tel +44 (0)115 927 1721 • Fax +44 (0)115 875 6630 • E-mail info@an-wallis.com • Website www.an-wallis.com