CONTENTS EARTHING

Introduction EAR:2 - 3

Earth Termination Network EAR:4 - 7

The Earth Termination Network is a vital part of any Power or Lightning Protection installation

Earth Rods and Fittings EAR:8 - 13

Copperbond, solid copper and stainless steel Earth Rods and fittings

Plates and Mats EAR:14

Solid copper Plates and lattice copper Earth Mats

Soil Conditioning Agents EAR:15 - 19

Bentonite and Marconite

Concrete Inspection Pits, Cable Protection Covers, Markers & Posts EAR:20 - 24
Concrete Inspection Pits to enable testing of the earth electrode system,
cable protection covers and markers to protect cables from damage

Plastic Inspection Pits EAR:25 - 26

Plastic Inspection Pits to enable testing of the earth electrode system

Earth Rod Seals EAR:27 - 28

Single and Double Earth Rod Seals for basement earthing installations

Clamps EAR:29 - 31
Rod to tape, cable and strand clamps for inter-connecting conductors, rods etc

Accessories EAR:32

EARTHING: CONTENTS EAR:1

 EARTHING INTRODUCTION

Copper is the recommended material to use in earthing applications, whether below or above ground.
Materials used in earthing systems must be able to:
• withstand mechanical damage
• resist corrosion
• provide a low impedance path to earth
• carry the maximum fault condition for the application/installation

EARTH MATS

page EAR:14

INSPECTION PITS
pages EAR:20 - 26

EARTH SEALS

pages EAR:27-28

EAR:2 EARTHING: INTRODUCTION

INTRODUCTION EARTHING

Our castings are high quality/high copper content complying to BS 7430 and BS 62561-1.
Additional to our range are UL listed copperbond earth rods and exothermic welding.

EARTH ROD
CLAMPS
pages EAR:29 - 31

INSPECTION PITS
pages EAR:20 - 26

EARTH RODS AND

ACCESSORIES
pages EAR:8 - 13

EARTH PLATES

page EAR:14
CONDUCTIVE
AGGREGATES
pages EAR:15 - 19

EARTHING: INTRODUCTION EAR:3

 EARTHING EARTH TERMINATION NETWORK

Earth Termination Network

It is important that both lightning and electrical fault currents are dispersed into the ground (soil) in a safe
manner and that this installation will last in excess of 20 years (in average soil conditions).
With this in mind, an Earth Termination Network must:
• protect life,
• provide a low resistivity path to earth,
• allow circuit protection devices to operate correctly,
• carry high currents repeatedly,
• have excellent corrosion resistance properties, and
• be mechanically robust.
Moreover, the careful design of an Earth Termination Network will avoid the potentially lethal hazards
associated with live metalwork/lightning conductors and the potential difference arising from subsequent
voltage gradients in the ground.

VOLTAGE GRADIENT
When lightning, or a fault current, is injected into the ground the voltage dissipates through the soil,
radiating away from the point of entry. The further the distance from the point of entry, the lower the
voltage that will present (much like the size of ripples in a pond, as they radiate away from the point
where a stone was thrown into the water).

The difference in voltage between these points:

1. Live metalwork,
2. Point of injection into the ground, and
3. Distances away from the point of injection
. . . are called “potential difference”.

1
TRANSFERRED POTENTIAL

1
Path of current through body
Potential difference

TOUCH POTENTIAL
STEP POTENTIAL

2 3
3 3 3

This is significant because a current passing through the heart causes fibrillation and can lead to death.
Mitigation of potential differences can be through the use of “equipotential grids” that equalise potential
across an area, plus it is good practice to ensure that the conductors and rods are buried at least 1m
deep and covered by a thick layer of insulating material eg rock.

EAR:4 EARTHING: EARTH TERMINATION NETWORK

EARTH TERMINATION NETWORK EARTHING

An earth termination network can be installed in different ways . . .

1. Simple Earth Electrode

This can be a driven Earth Rod, an Earth Plate, a Mat or a
CONDUCTOR

length of buried conductor - or a combination of both. GRO

UN
DL
EVE
L

EARTH
ROD

2. Crows Foot Electrode CONDUCTORS

Can incorporate Earth Rods - the rods would be spaced

at least twice their driven length apart. GRO
UN
DL
EVE
L

EARTH
ROD

3. Counterpoise Conductor CONDUCTOR

Can incorporate Earth Rods - the rods would be spaced

at least twice their driven length apart. GRO
U ND
LEV
EL EARTH
ROD

4. Grid Conductor
CONDUCTORS

Can incorporate Earth Rods - the rods would be spaced

at least twice their driven length apart. For example, in a
sub-station or cell site.
GRO
UN
DL
EVE
L

EARTH
ROD

5. Earth Plates/Mats
For example, for protection of an operator at switch positions.

EARTHING: EARTH TERMINATION NETWORK EAR:5

 EARTHING EARTH TERMINATION NETWORK

The choice of Earth Termination layout design depends on multiple factors, but essentially . . .
• The purpose
• The ground conditions

From BS:EN 62305 . . .

For Lightning Protection, BS:EN 62305:3 advocates two types of Earthing System:
• TYPE A - simple earth electrode (page EAR:5)
• TYPE B - crows foot or counterpoise (page EAR:5)
These are ideally suited to areas of high soil resistivity and structures containing electronic
equipment and hazardous materials.
• Foundation electrodes may be employed - these are similar to TYPE B and are installed within the
building’s foundation itself.

Factors influencing the ability to achieve a satisfactory earth resistivity value

The soil composition also affects the resistivity of the soil itself. The presence of salts can significantly reduce
resistivity which also, with some other elements, can become extremely corrosive to the material used in an
earthing system.
Corrosion resistance is of paramount importance.
Soil resistivity readings should be taken prior to designing an Earth Termination Network. The reason for this
is that the nature of the soil has a major influence over the final resistivity of the Earth Termination network.
This can be illustrated in the following tables . . .

Effects of Moisture Resistivity (Ωm) Effects of Temperature Resistivity

moisture Content
% by weight Top soil Sandy loam temperature °C °F
(Ωm)

content on 0 10 x 106 10 x 106

on resistivity 20 68 72
resistivity 2.5 2,500 1,500 10 50 99
5 1,650 430 0 32 (water) 138
10 530 185 0 32 (ice) 300
15 310 105 -5 23 790
20 120 63 -15 14 3,300
30 64 42

Confused? Kingsmill are here to help you

Sometimes it is not possible to achieve the desired finished earth electrode resistance, due to the ground
conditions being unfavourable - hard rocky ground, mountain tops, dry soil, etc.
For areas where the soil resistivity is very high, Kingsmill offer several “conductive aggregate” solutions to
help improve resistivity - these are detailed on pages EAR:15 - 19.

EAR:6 EARTHING: EARTH TERMINATION NETWORK

EXOTHERMIC WELDING EARTHING

We recommend the use of copper earth electrode systems due to their inherent low resistivity and corrosion
resistance.
Our range encompasses:
• Solid copper earth electrodes and conductor
• Solid stainless steel electrodes
• Copperbond (copper covered steel) electrodes and conductor
• Copper conductors
• Earth bars and bonds
• Exothermic welding
Kingsmill do not recommend the use of galvanised, zinc plated or bare mild steel in buried (in direct contact
with soil) earth termination networks for two reasons.
1. The high resistivity of steel compared to copper
2. Poor corrosion resistance when compared with solid copper or copperbonded steel
Similarly, the earth connection components must also be able to resist corrosion and carry the nominated
fault rating of the conductor.

Exothermic Welding
It is important that all Earth Terminations can conduct the current that is required by the Earthing design.
Not only must this apply to the conductor itself, but also to the connectors used within the Earth Termination
network. Exothermic joints carry 100% of the conductor fault rating, whereas bolted braided and crimped
connections do not. With this in mind, Kingsmill supply a full range of exothermic welding equipment.
Exothermic welds permit the finished joint to carry the full fault rating of the conductors joined, they never
loosen and being composed mainly of copper, provide first class corrosion resistance.
The Kingsmill exothermic joint provides:
• Full fault current carrying capacity
• Excellent corrosion resistance
• Ease of installation
However please note, there are instances where a bolted
connection is required. For example, where the earth
conductor needs to be disconnected from the earth
electrode for testing, or where the installation of an
exothermic weld is not possible.

KingsWeld Exothermic Welding

KingsWeld products, including applications and methods can be found in the KingsWeld section.

A chain is only as good as its weakest link . . .

. . . poor component selection can seriously impair a system!

EARTHING: EXOTHERMIC WELDING EAR:7

 EARTHING EARTH RODS AND ACCESSORIES

Copperbond Earth Rods

Copperbond Earth Rods, deep driven, usually provide the most cost effective
earth system. They are made from a low carbon, high tensile strength
(minimum 600n/mm2) steel core with a coating of 99.9% pure electrolytic
copper, that has been molecularly bonded to the steel core.
Extendable type rods have a rolled thread (UNC2A) at each end.
Rolled threads have a higher strength than cut threads. Additionally, they
preserve the copper coating over the threaded sections thus improving
corrosion resistance.
NOMINAL DIA. LENGTH THREAD SIZE SHANK DIA. WEIGHT PART NO.
(in : mm) (mm) UNC (in) (mm) (kg)
3/8 : 9 1200 3/8 9.5 0.61 ERCB1004
5/8 : 16 1200 5/8 14.2 1.50 ERCB1604
5/8 : 16 1500 5/8 14.2 1.88 ERCB1605
5/8 : 16 1800 5/8 14.2 2.27 ERCB1606
5/8 : 16 2400 5/8 14.2 2.99 ERCB1608
5/8 : 16 3000 5/8 14.2 3.75 ERCB1610
3/4 : 20 1200 3/4 17.2 2.19 ERCB2004
3/4 : 20 1500 3/4 17.2 2.79 ERCB2005
3/4 : 20 1800 3/4 17.2 3.34 ERCB2006
3/4 : 20 2400 3/4 17.2 4.46 ERCB2008
3/4 : 20 3000 3/4 17.2 5.44 ERCB2010
Material: Pure copper molecularly bonded on to a steel core
Standard: BS:EN 62561-2, BS 7430
Copper Thickness: 254 microns (minimum)

Driving Stud

UL listed Copperbond Earth Rods

NOMINAL LENGTH THREAD SIZE SHANK DIA. WEIGHT PART NO.
Coupler DIA. (in) (mm) UNC (in) (mm) (kg)
5/8 2400 5/8 14.2 2.99 ERCB1608UL
5/8 3000 5/8 14.2 3.75 ERCB1610UL
3/4 2400 3/4 17.2 4.46 ERCB2008UL
3/4 3000 3/4 17.2 5.44 ERCB2010UL

Copperbond Earth Rods should have a minimum of 254

microns of copper thickness. This measurement results from
research carried out in the USA, that studied the weight loss
of copper (corrosion) under differing soil conditions. It was
determined that 0.254mm (or 254 microns) will provide a
lifetime of 20+ years in average soil conditions.
The thread must be rolled after plating to ensure maximum
copper coverage over the threads. Rolled threads are also
stronger than cut threads.
Rod

APPLICATION

Driving Stud Earth Rod Coupling Earth Rod Driving Spike

Driving Spike

COMPONENT
ASSEMBLY:
Assemble Kingsmill Copperbond Earth Rods to the desired length with Couplings and add a
Driving Stud to the top and a Driving Spike to the bottom for safe driving into the ground.

EAR:8 EARTHING: EARTH RODS AND ACCESSORIES

EARTH RODS AND ACCESSORIES EARTHING

Couplings (Copperbond Earth Rods)

Kingsmill Earth Rod Couplings are counter-bored and of sufficient length to ensure that Earth Rod threads are completely enclosed
within the coupling. Manufactured from high strength, high copper content alloy to ensure adequate strength and corrosion resistance.

DESCRIPTION LENGTH BODY DIAMETER WEIGHT PART NO.

(mm) ACROSS FLATS (mm) (kg)
Rod Coupling 5/8" UNC 68 22 0.08 COUP16
Rod Coupling 3/4" UNC 79 24 0.14 COUP20
Material: High Copper Content Alloy
Standard: BS 7430, BS:EN 62561-2: 2012

DESCRIPTION LENGTH ACROSS WEIGHT PART NO.

(mm) FLATS (mm) (kg)
16mm Rod Coupling 5/8" UNC (HEX) 68 20 0.11 COUP16HEX
20mm Rod Coupling 3/4" UNC (HEX) 80 25 0.17 COUP20HEX
Material: High Copper Content Alloy
Standard: BS:EN 62561-2: 2012

DESCRIPTION LENGTH BODY DIA. WEIGHT PART NO.

(mm) (mm) (kg)
5/8” Rod Coupling 80 25 0.20 COUP16S
Material: Silicon Aluminium Bronze

Driving Studs (Copperbond Earth Rods)

High strength Driving Studs for repeated use with power hammers.

DESCRIPTION LENGTH HEAD DIA. WEIGHT PART NO.

(mm) (mm) (kg)
16mm Driving Stud 5/8" UNC 54 22 0.09 DRST16
20mm Driving Stud 3/4" UNC 62 25 0.15 DRST20
Material: High Tensile Steel with a socket-head cap screw
Standard: BS 7430

Driving Spikes (Copperbond Earth Rods)

Driving Spikes for use with our copperbond Earth Rods. They enable rods
to be driven into hard/compacted ground with ease and are internally
threaded for screwing directly onto the Earth Rod.
DESCRIPTION LENGTH HEAD DIA. WEIGHT PART NO.
(mm) (mm) (kg)
Driving Spike for 16mm (5/8") 54 22 0.05 DRSP16-CB
copperbond Earth Rod
Driving Spike for 20mm (3/4") 62 25 0.06 DRSP20-CB
copperbond Earth Rod
Material: Case Hardened Steel
Standard: BS 7430

EARTHING: EARTH RODS AND ACCESSORIES EAR:9

 EARTHING EARTH RODS AND ACCESSORIES

Solid Copper Earth Rods

Used where soil conditions are aggressive, ie high salt content.
Solid Copper Earth Rods have a tapped hole at each end which allows them
to be joined together by means of a coupling dowel.

LENGTH (mm) DIAMETER (mm) INTERNAL THREAD (mm) WEIGHT (kg) PART No.
1200 15 M10 1.85 ERSC1504
1200 16 M10 2.10 ERSC1604
1500 16 M10 2.49 ERSC1605
1800 16 M10 2.99 ERSC1606
2400 16 M10 3.99 ERSC1608
3000 16 M10 4.99 ERSC1610
1200 20 M10 3.30 ERSC2004
1500 20 M10 4.14 ERSC2005
1800 20 M10 5.02 ERSC2006
2400 20 M10 6.70 ERSC2008
3000 20 M10 8.38 ERSC2010
1200 25 M10 5.18 ERSC2504
1500 25 M10 6.48 ERSC2505
1800 25 M10 7.78 ERSC2506
2400 25 M10 10.37 ERSC2508
3000 25 M10 12.97 ERSC2510
Material: 99.9% Hard Drawn Copper
Standard: BS:EN 62561-2, BS 7430

Driving Head
APPLICATION

Driving Head Earth Rod Coupling Earth Rod Driving Spike

Dowel

COMPONENT
ASSEMBLY:
Rod Assemble Kingsmill Copperbond Earth Rods to the desired length with Couplings and add a
Driving Stud to the top and a Driving Spike to the bottom for safe driving into the ground.

Coupling dowel

Rod

Driving Spike

EAR:10 EARTHING: EARTH RODS AND ACCESSORIES

EARTH RODS AND ACCESSORIES EARTHING

Driving Heads (Solid Copper Earth Rods)

Kingsmill Driving Heads protect both the internal thread and the top
of the Solid Copper Earth Rod whilst the rods are being driven into
the ground.
DESCRIPTION LENGTH THREAD DIA. WEIGHT PART NO.
(mm) (mm) (kg)
16mm Rod Driving Head 40 10 0.04 DRHD16
20mm Rod Driving Head 42 10 0.06 DRHD20
25mm Rod Driving Head 45 10 0.09 DRHD25
Material: Steel
Standard: BS 7430

Coupling Dowel (Solid Copper Earth Rods)

Kingsmill Coupling Dowels are used to join solid copper Earth Rods.
DESCRIPTION LENGTH THREAD DIA. WEIGHT PART NO.
(mm) (mm) (kg)
M10 Coupling Dowel 40 10 0.02 DWPB10
Material: Phosphor Bronze
Standard: BS 7430

Driving Spikes (Solid Copper Earth Rods)

Driving Spikes enable the Solid Copper Earth Rod to be driven into
the ground easily while protecting the end of the rod from damage.
DESCRIPTION LENGTH THREAD DIA. WEIGHT PART NO.
(mm) (mm) (kg)
16mm Rod Driving Spike 40 10 0.03 DRSP16
20mm Rod Driving Spike 55 10 0.06 DRSP20
25mm Rod Driving Spike 60 10 0.10 DRSP25
Material: Case Hardened Steel
Standard: BS 7430

EARTHING: EARTH RODS AND ACCESSORIES EAR:11

 EARTHING EARTH RODS AND ACCESSORIES

Stainless Steel Earth Rods

Made from austenitic steel to British standards.
Stainless Steel Earth Rods are similar to our Solid Copper Rods but are more
anodic than copper, and are useful where galvanic corrosion might occur due
to buried dissimilar metals being in close proximity to each other. The current
carrying capacity of the Stainless Steel Earth Rod in relation to copper is poor.
Stainless Steel Earth Rods have a tapped hole at each end which allows them
to be joined together by means of a coupling dowel.
Stainless Steel Earth Rods can, if required, be supplied in different grades.

LENGTH (mm) DIAMETER (mm) INTERNAL THREAD (mm) WEIGHT (kg) PART NO.
1200 16 M10 1.87 ERSS1604
1500 16 M10 2.34 ERSS1605
1800 16 M10 2.81 ERSS1606
2400 16 M10 3.75 ERSS1608
3000 16 M10 4.69 ERSS1610
1200 20 M10 2.96 ERSS2004
1500 20 M10 3.65 ERSS2005
1800 20 M10 4.38 ERSS2006
2400 20 M10 5.84 ERSS2008
3000 20 M10 7.30 ERSS2010
1200 25 M10 4.89 ERSS2504
1500 25 M10 6.12 ERSS2505
1800 25 M10 7.34 ERSS2506
2400 25 M10 9.79 ERSS2508
3000 25 M10 12.24 ERSS2510
Material: Stainless steel
Driving Head
Standard: BS:EN 62561-2, BS 7430
Recommended for clay soils and marine/shore environments.

APPLICATION

Rod
Driving Head Earth Rod Coupling Earth Rod Driving Spike
Dowel

COMPONENT
Coupler ASSEMBLY:
Assemble Kingsmill Stainless Steel Earth Rods to the desired length with Couplings and add
a Driving Stud to the top and a Driving Spike to the bottom for safe driving into the ground.

Rod

Driving Spike

EAR:12 EARTHING: EARTH RODS AND ACCESSORIES

EARTH RODS AND ACCESSORIES EARTHING

Driving Heads (Stainless Steel Earth Rods)

Kingsmill Driving Heads are designed to protect both the internal
thread and the top of the Stainless Steel Earth Rod whilst the rods are
being driven into the ground.
DESCRIPTION LENGTH THREAD DIA. WEIGHT PART NO.
(mm) (mm) (kg)
16mm Rod Driving Head 40 10 0.04 DRHD16
20mm Rod Driving Head 42 10 0.06 DRHD20
25mm Rod Driving Head 45 10 0.09 DRHD25
Material: Steel
Standard: BS 7430

Coupling Dowel (Stainless Steel Earth Rods)

Kingsmill Coupling Dowels are used to join stainless steel earth rods.

LENGTH (mm) THREAD DIA. (mm) WEIGHT (kg) PART NO.

40 10 0.02 DWSS10
Material: Stainless Steel
Standard: BS 7430

Driving Spikes (Stainless Steel Earth Rods)

Driving Spikes enable the Solid Copper Earth Rod to be driven into
the ground easily while protecting the end of the rod from damage.
DESCRIPTION LENGTH THREAD DIA. WEIGHT PART NO.
(mm) (mm) (kg)
16mm Rod Driving Spike 40 10 0.03 DRSP16
20mm Rod Driving Spike 55 10 0.06 DRSP20
25mm Rod Driving Spike 60 10 0.10 DRSP25
Material: Case Hardened Steel
Standard: BS 7430

EARTHING: EARTH RODS AND ACCESSORIES EAR:13

 EARTHING PLATES AND MATS

Solid Copper Plates

Kingsmill Solid Copper Earth Plates are used as part of an earthing
network. They provide a long lasting solution where it is not possible
to use deep driven Earth Rods.
Generally used as an electrode where significant amounts of fault
current can be encountered.
LENGTH x WIDTH THICKNESS SURFACE AREA WEIGHT PART NO.
(mm) (mm) (m2) (kg)
600 x 600 1.5 0.73 4.87 SCEP615
600 x 600 3.0 0.73 11.20 SCEP630
900 x 900 1.5 1.63 9.74 SCEP915
900 x 900 3.0 1.63 21.75 SCEP930

Material: Copper
Standard: BS:EN 12163 (formerly BS 2874)
OTHER SIZES ARE AVAILABLE UPON REQUEST

Lattice Copper Earth Mats

Kingsmill Lattice Copper Earth Mats are used where step potential
could cause problems.
They are a lower cost option to the solid plates and when used with
Marconite®, they provide a long lasting earth solution.
Generally used as an electrode where significant amounts of fault
current can be encountered.
LENGTH x WIDTH THICKNESS SURFACE AREA GRID WEIGHT PART NO.
(mm) (mm) (m²) (kg)
600 x 600 3.0 0.31 5 Bar 4.02 LCEM630
900 x 900 3.0 0.65 5 Bar 5.90 LCEM930

Material: Copper
Standard: BS:EN 12163 (formerly BS 2874)
OTHER SIZES ARE AVAILABLE UPON REQUEST
When buried horizontally, Earth Mats can provide an equipotential
plane for protecting operators at switching positions.

Pre-Fabricated Earth Mats

Kingsmill can provide a bespoke service for large Earth Mats, which can be rolled-out on site.
Please contact us with your requirements.

EAR:14 EARTHING: PLATES AND MATS

BENTONITE EARTHING

Bentonite - Moisture Retaining Clay

Bentonite is used as a backfill to reduce soil resistivity. When mixed
with water, it swells to several times its dry volume. This moisture
content can be retained for a considerable time and further moisture
can be absorbed during rainfall etc. Bentonite can be supplied in
either powder or granular form.
Approximately 18 x 25kg bags create a volume of 1m3 (depending on
soil and excavation conditions).
MATERIAL WEIGHT (kg) Part NO.
Granulated Moisture Retaining Clay 25 BENT01
Powdered Moisture Retaining Clay 25 BENT02

Earthing Compound
Granular: Granular is the preferred option for filling trenches. The
conductor is surrounded with Bentonite and then water
poured over and mixed in the trench.
Powder: Powder is the preferred product for pouring into bore
holes, ensuring the mixture is of a thin enough consistency
to reach the bottom of the bore hole.
Material: Sodium carbonate activated calcium montmorillonite clay.
The product is a naturally occurring substance with no
known ecological hazards, and can be disposed of as non-
hazardous waste.

EARTHING: BENTONITE EAR:15

 EARTHING MARCONITE

Marconite® - Granulated Conductive Aggregate

Marconite® is a granulated conductive medium designed to replace
the conventional aggregate in concrete and thereby provide a
permanent medium with good electrical conductivity and high
strength.
It can provide a permanent solution to problems in electrical/
constructional situations.
Marconite® concrete is touch dry within hours, but it will be several
days before it is fully cured.
Marconite® is chemically inert with very low soluble sulphate content.
It can be used with all conventional types of cement, as well as most
proprietary resin-based cements, adhesives and gypsum plasters.

MATERIAL WEIGHT (kg) Part No.

Marconite Concrete (Pre-Mixed) 25 MARCONITE-01
Marconite Concrete 25 MARCONITE-02

Marconite® is the ideal solution for use in problem earth situations

a) In areas of poor soil conductivity (high resistivity) - eg rocky areas, sandy soil etc.
b) In conjunction with lattice mats/plates (where the earth electrodes cannot be deep driven)
c) Where space is limited

Depending on the surrounding soil conditions Marconite® can Resistivity Characteristics

300
reduce electrode resistivity by up to 50%.
Electricity is conducted in much the same way as via metal, 250
through the movement of electrons and direct contact with the
carbonaceous particles that compose Marconite®. 200
OHM Metres

This provides a huge advantage over materials such as

Bentonite, that rely on conducting electricity through the 150
movement of charged ions. Ions require the presence of an
effective electrolyte - water and salts. Such ion type systems 100
can dry out and without water cannot conduct electricity.
50
Marconite® has a resistivity that is many times lower than
that of Bentonite (Marconite 0.001Ωm vs Bentonite 3Ωm) in its
0
natural setting or untamped condition. Marconite® Bentonite Clay
Through acting as a backfill, (Marconite® is a highly conductive Material
material), the surface area of the electrode is increased, thus reducing
the electrodes’ resistance to earth.

EAR:16 EARTHING: MARCONITE

MARCONITE EARTHING

Theft deterrent
When copper conductors are encased in a Marconite®/concrete surround, this acts as a deterrent to those intent on
stealing copper from cell sites and substations.

Advantages
Marconite® is a granulated conductive medium designed to replace the conventional aggregate in concrete and thereby
provide a permanent medium with good electrical conductivity and strength.
• Low resistivity, especially when compared to Bentonite.
• Does not rely on moisture to conduct electricity.
• No seasonal variation - does not rely on water to conduct, does not shrink.
• Does not require maintenance.
• Chemically inert and non-polluting - non-corrosive to steel and copper, it does not attack cement structures. Its PH is
within the neutral range.
• Environmentally safe - it does not dissolve or dissipate like other chemical enhancers such as caustic soda, salt and
acid based products.
• Easy to use - forms a concrete like material that can be poured as a slurry and in some situations, used dry.
• Acts as a theft deterrent.
• High strength - can be used as part of the building structure and achieve strengths of grade 25 concrete.
• Synthetic material manufactured specifically for earthing applications.

Mixing instructions
Plain Marconite® 3:1 mix Marconite®/cement by weight plus 1 litre of water per 4kg. (ie 3 x 25kg bags of Marconite®,
1 x 25kg bag of cement, 6 litres of water.)
It is possible to vary the ordinary portland cement and water content to suit local conditions, but
this will affect the performance of the finished concrete.
Marconite® Premix Cement and Marconite® have already been mixed, simply add 6 litres of water per 25kg bag of
Marconite® Premix.
When mixed as above, a relatively dry material is formed. Water content can be adjusted as
the application requires, but this will affect drying times and resultant compressive strength.
Typically, the mix is touch dry within hours but not fully cured until after several days.
Density • Pure dry Marconite® (Marconite-01) is approximately 1,000kg/m3
(40 x 25kg bag per one cubic metre)
• Dry Marconite® pre-mix (Marconite-02) is approximately 1,250kg/m3
(50 x 25kg bags per one cubic metre)
• The fully hardened density of Marconite® concrete, mixed as per instructions,
is 1,500kg/m3

We recommend plain Marconite for export markets.

EARTHING: MARCONITE EAR:17

 EARTHING MARCONITE

Application
Earth Rod installation
• Drill a hole 10 x the diameter of the earth rod (16mm diameter rod = 160mm
diameter hole)
• Centre the earth rod in the hole and lower it to the bottom
• Mix Marconite® into a slurry and pour into the hole
• Tamp down the mix during pouring to exclude air pockets
• Keep the earth rod central to the hole
• Take a resistivity reading immediately after installation and again 14 days later

Depth by
design

Rod 16mm

160mm

Marconite

Trench installation (plate/mat)

• Excavate a trench to approximately
200mm larger, all round than the plate
dimensions. The trench should typically be
1,000m deep (minimum 600mm)
• Mix the Marconite® into a slurry and pour
into the trench to a depth of 50mm
• Connect the earth plate/mat to the
connecting conductors
• Place the earth plate/mat on top of the
Backfilled soil

first layer of Marconite® mix

• Cover the earth plate/mat with a second
layer of Marconite® mix to a depth of
50mm 100mm Lightly tamped

• Backfill the trench with native soil to a 50mm

backfilled soil
600mm
depth of 100mm and lightly tamp down 50mm
Marconite
minimum

• Then backfill the trench according to the 100mm

clients requirement
• The use of marker tape or tiles might be
required
• Take a resistivity reading immediately after 100mm

installation and again 14 days later

EAR:18 EARTHING: MARCONITE

MARCONITE EARTHING

Trench installation (conductor)

• Excavate a trench, typically 1m deep and 0.5m
wide. The length of the trench is determined by
500mm
the resistivity of the native soil and the system
requirement
• At the bottom of the trench excavate a small channel
minimum dimensions 100mm wide and 100mm deep
• Mix the Marconite® into a slurry and pour into the
Backfilled
channel to a depth of 50mm soil
• Lay the conductor on top of the first layer of
Marconite® mix
• Cover the conductor with a second layer of
Marconite® mix to a depth of 50mm
Lightly tamped 10mm electrode
• Backfill the trench with native soil to a depth of 100mm backfilled soil
100mm and lightly tamp down 1000mm
• Then backfill the trench according to the clients Marconite

requirement 50mm
• The use of marker tape or tiles might be required 50mm

• Take a resistivity reading immediately after

100mm
installation and again 14 days later

EARTHING: MARCONITE EAR:19

 EARTHING INSPECTION PITS

Concrete Inspection Pit

Kingsmill Concrete Inspection Pits are suitable for load rating to
4,500kg and are suitable for most types of Earthing and Lightning
Protection installations.
The Concrete Inspection Pit protects the Earth Rod connection and
makes it available for inspection. The Concrete Inspection Pit can
have an Earth Bar fitted diagonally in slots provided for multiple
conductor connections.

DESCRIPTION DIMENSIONS (mm) WEIGHT (kg) PART NO.

Concrete Inspection Pit 315 x 315 x 165 25 CPIT

Material: Concrete
Standard: BS:EN 62561-5:2011

Inspection Pit Earth Bars (for Concrete Inspection Pit)

Kingsmill Inspection Pit Earth Bars are used to facilitate testing of the
earth electrode or earthing system.
The Earth Bar can be fitted into slots, to provide for multiple
conductor connections.
DESCRIPTION SIZE (mm) HOLE SIZE WEIGHT PART NO.
LxWxT (mm) (kg)
5 hole pit Earth Bar 300 x 25 x 6 11 0.37 PBAR5
7 hole pit Earth Bar 300 x 25 x 6 11 0.36 PBAR7

Material: Copper
Standard: BS:EN 13601

Inspection Pit Earth Bars (tinned)

DESCRIPTION SIZE (mm) HOLE SIZE WEIGHT PART NO.
LxWxT (mm) (kg)
3 hole pit Tinned Earth Bar 290 x 31 x 6 11 0.50 PBAR290
5 hole pit Tinned Earth Bar 290 x 31 x 6 11 0.49 PBAR316

Material: Tinned Copper

Standard: BS:EN 13601

EAR:20 EARTHING: INSPECTION PITS

INSPECTION PITS EARTHING

Lightweight Concrete Inspection Pit

Kingsmill Lightweight Concrete Inspection Pits are suitable for load
rating to 4,500kg and are suitable for most types of Earthing and
Lightning Protection installations.
The Lightweight Concrete Inspection Pit protects the Earth Rod
connection and makes it available for inspection. The Inspection Pit
can have an Earth Bar fitted diagonally in slots provided. These Earth
Bars (see below) allow for multiple conductor connections.

DESCRIPTION DIMENSIONS WEIGHT PART NO.

(mm) (kg)

Lightweight Concrete Inspection Pit 16 CPIT/LW

Material: Concrete
Standard: BS:EN 62561-8:2011

Inspection Pit Earth Bars (for Lightweight Concrete Inspection Pit)

Kingsmill Inspection Pit Earth Bars are used to facilitate testing of the
earth electrode or earthing system.
The Inspection Pit Earth Bar can be fitted diagonally in slots provided
in the Lightweight Concrete Inspection Pit. They are suitable for
multiple - 5 or 7 - conductor connections.

DESCRIPTION OVERALL SIZE HOLE SIZE WEIGHT PART NO.

(mm) (mm) (kg)
5 hole Earth Bar 230 x 25 x 6 11 0.29 PBAR5/LW
7 hole Earth Bar 230 x 25 x 6 11 0.28 PBAR7/LW

Material: Copper
Standard: BS:EN 13601

EARTHING: INSPECTION PITS EAR:21

 EARTHING INSPECTION PITS

Concrete Inspection Pit - 500 x 500

Kingsmill Concrete Inspection Pits - 500 x 500 are designed for use
where more space is required in the chamber.
DESCRIPTION WEIGHT (kg) PART NO.
Concrete Inspection Pit 500 x 500 x 500 185 CPIT500
Material: Concrete

Inspection Pit Earth Bars (for 500 x 500 Concrete Inspection Pit)
Kingsmill Inspection Pit Earth Bars are used to facilitate testing of the earth
electrode or earthing system.
Inspection Pit Earth Bars can be fitted diagonally in slots provided in the
Concrete Inspection Pits. These allow for multiple conductor connections.
DESCRIPTION OVERALL SIZE HOLE DIA. FINISH WEIGHT PART NO.
L x W x T (mm) (mm) (kg)
5 hole bar for CPIT500 490 x 50 x 6 11 Bare 0.81 PBAR5CBP500
5 hole bar for CPIT500 490 x 50 x 6 11 Tinned 0.81 PBAR5CTP500
7 hole bar for CPIT500 490 x 50 x 6 11 Bare 0.80 PBAR7CBP500
7 hole bar for CPIT500 490 x 50 x 6 11 Tinned 0.80 PBAR7CTP500
Material: Copper
Standard: BS:EN 13601

EAR:22 EARTHING: INSPECTION PITS

INSPECTION PITS EARTHING

Concrete Inspection Pits (with lifting eye/brass plate)

Kingsmill enhanced Concrete Inspection Pits with lifting eye/brass
plate can be customised to your exact requirements.
The lifting eye makes it easy to remove the pit lid for applications
where regular inspection is required.
Inlaid brass plates can be engraved as required. Typical engraving
includes identification and safety notices and these can be produced
in any language.

DESCRIPTION WEIGHT (kg) PART NO.

Concrete Inspection Pit c/w lifting eye 25 CPIT-LE
Concrete Inspection Pit c/w brass plate 25 CPIT-BP
Concrete Inspection Pit c/w lifting eye & brass plate 25 CPIT-LE-BP

Dimensions: 315mm x 315mm x 165mm

(W x D x H)
Material: Concrete

Inspection Pit Earth Bars (for Concrete Inspection Pit with lifting eye/brass plate)
Kingsmill Inspection Pit Earth Bars are used to facilitate testing of the
earth electrode or earthing system.
The Earth Bar can be fitted diagonally in slots provided for multiple
conductor connections.
DESCRIPTION OVERALL SIZE (mm) HOLE DIA. WEIGHT PART NO.
LxWxT (mm) (kg)
5 hole Earth Bar 300 x 25 x 6 11 0.37 PBAR5
7 hole Earth Bar 300 x 25 x 6 11 0.36 PBAR7
Material: Copper
Standard: BS:EN 13601, BS:EN 62561-5:2011

EARTHING: INSPECTION PITS EAR:23

 EARTHING PROTECTION COVERS AND MARKER POSTS

Cable Protection Covers

Cable Protection Covers are wet cast concrete impressed with a
warning of ‘DANGER ELECTRICITY’.
Available in 3 standard lengths: 150mm, 230mm and 305mm.
WIDTH (mm) LENGTH (mm) WEIGHT (kg) PART NO.
150 914 15 CCP6
230 914 23 CCP9
305 914 29 CCP12
Material: Concrete

Care should be taken in selecting the cover size as the cover should
be wider than the service line over which it is to be placed.

Cable Protection Covers can be supplied in red coloured concrete:

WIDTH (mm) LENGTH (mm) WEIGHT (kg) PART NO.
150 914 15 CCP6R
230 914 23 CCP9R
305 914 29 CCP12R
Material: Concrete

Marker Posts
Marker Posts for the indication of electric cable junctions and field
markers.
• Impressed with the words ‘ELECTRIC CABLES’
• Manufactured using wet cast concrete
• 100 x 76mm recess for supplementary identification plates
TYPE LENGTH DEPTH WEIGHT QUANTITY PART NO.
(mm) (mm) (kg) (per pallet)
Type 2
1 610 80 14 30 CMPT1
2 762 80 24 30 CMPT2
Type 1
Material: Concrete

Marker Blocks
Marker Blocks for the marking of underground buried electrical
services and junctions.
• Concrete blocks impressed with ‘ELECTRIC CABLES’
• Manufactured using wet cast concrete
• 100mm x 76mm recess for supplementary identification plates
CMB12 CMB14 LENGTH WIDTH DEPTH WEIGHT QUANTITY PART NO.
(mm) (mm) (mm) (kg) (per pallet)
305 305 150 33 18 CMB12
610 610 100 87 10 CMB24
Material: Concrete

EAR:24 EARTHING: PROTECTION COVERS AND MARKER POSTS

PLASTIC INSPECTION PITS EARTHING

Plastic Inspection Pit

The Plastic Inspection Pit protects the Earth Rod connection and
makes it available for inspection. The Plastic Inspection Pit can have
up to 3 Earth Bars fitted in the slots provided for multiple connections.
DESCRIPTION W W2 H H1 WEIGHT (kg) PART NO.
Plastic Inspection Pit 306 260 216 55 3.00 PPIT-K

Paving can be laid up to the lid edge without an unsightly concrete

filler surround. Installation instructions are printed on the side. Will
withstand 6000kg load when installed correctly.
Lockable lid, using a screwdriver or special key to release the locking
mechanism.
Material: Polypropylene (body) W2
GRP (lid)
Standard: BS:EN 62561-5:2011 W
H1

Earth Bars (for Plastic Inspection Pit)

Kingsmill Inspection Pit Earth Bars are used to facilitate testing of the
earth electrode or earthing system.
The Inspection Pit Earth Bar can be fitted width ways in slots provided
in the base of the Plastic Inspection Pit (three slots per pit).
DESCRIPTION OVERALL SIZE HOLE SIZE WEIGHT PART NO.
(mm) L x W x T (mm) (kg)
5 hole Earth Bar 203 x 25 x 6 11 0.24 PBAR5PPK
7 hole Earth Bar 203 x 25 x 6 11 0.22 PBAR7PPK

Material: Copper
Standard: BS:EN 13601

EARTHING: PLASTIC INSPECTION PITS EAR:25

 EARTHING PLASTIC INSPECTION PITS

Light Duty Plastic Inspection Pit

Kingsmill Light Duty Plastic Inspection Pits are suitable for load rating
to 500kg and is suitable for most types of Earthing and Lightning
Protection installations.
78mm
The Light Duty Plastic Inspection Pit protects the Earth Rod
connection and makes it available for inspection. The pit can have an
220mm
Earth Bar fitted width ways in slots provided for multiple connections.
DESCRIPTION WEIGHT (kg) PART NO.
Light Duty Plastic Inspection Pit 1.28 PPIT-G
Material: Polypropylene 180mm
Standard: BS:EN 62561-5:2011

250mm
78mm

220mm
190mm

180mm

250mm

190mm

Earth Bars (for Light Duty Plastic Inspection Pit)

Kingsmill Inspection Pit Earth Bars are used to facilitate testing of the
earth electrode or earthing system.
The Earth Bar can be fitted width ways in a slot (one) provided. The
Earth Bar allows for multiple conductor connections.
DESCRIPTION OVERALL SIZE HOLE SIZE WEIGHT PART NO.
(mm) L x W x T (mm) (kg)
5 hole Pit Bar 200 x 25 x 6 11 0.24 PBAR5/PP
7 hole Pit Bar 200 x 25 x 6 11 0.23 PBAR7/PP
Material: Copper
Standard: BS:EN 13601

EAR:26 EARTHING: PLASTIC INSPECTION PITS

EARTH ROD SEALS EARTHING

Single Flange Earth Rod Seals

A waterproof earth electrode Single Flange Seal for use in
constructions where internal earths are specified.
Unique design allows the seals to be used with a broad range of
rod diameters. Use with PPIT-G Plastic Inspection Pit (page EAR:26).

ROD DIA. ROD TYPE LENGTH WEIGHT PART NO.

(in : mm) (mm) (kg)
5/8" UNC Copperbond 300 1.92 KES-58
3/4" UNC Copperbond 300 1.92 KES-34
15mm Solid Copper/Stainless Steel 300 1.92 KES-15
16mm Solid Copper/Stainless Steel 300 1.92 KES-16
20mm Solid Copper/Stainless Steel 300 1.92 KES-20
Material: High Density Plastic
Standard: BS:EN 62561-5:2011 and an extended 5 day test following
BS:EN 62561-5 test conditions.

350mm dia

Plastic Inspection Pit (sold separately)

2
50mm
min cover
Kingsmill Single Flange Earth Rod Seals have been
1
designed for use in concrete slabs with a nominal
228mm
PVC Duct
3 Concrete thickness of 300mm. They will withstand a pressure up to
(not supplied) 4 Slab 80psi (5.5 bar) and have been tested accordingly.
5
7 6 1 Plastic Inspection Pit (sold separately)
DPM 2 Seal Cap
3 ‘O’ Ring Rod Seal
DPM adhered to underside
of Seal Housing using 4 Compression Collar
proprietary mastic 8
5 EDPM Flat Seal Washer
Blinding Coat 6 Seal Housing
/Sub Soil
7 Inspection Pit Lock Nut

10 8 Seal Tube Coupler

300mm
max 9 Seal Tube
10 Earth Rod (sold separately)

APPLICATION

Benefits:
Additional Earth Rods can be driven at a later date, with no additional parts Earth Rod Seal Earth Pit Earth Rod
or causing damage to the Earth Rod Seal.

Installation Notes:
Ingress of water from anywhere other than around the Earth Rod Seal is the
responsibility of the installation contractor. The Earth Rod Seal flange and
components must be free from dust/debris/grease/paint before pouring the
concrete (highest quality and fully compacted to ensure sealing).
Performance depends on the integrity of the surrounding concrete. The main
concrete slab must not be shuttered out and the Earth Rod Seal fitted later.

EARTHING: EARTH ROD SEALS EAR:27

 EARTHING EARTH ROD SEALS

Double Flange Earth Rod Seal

A waterproof earth electrode Double Flange Earth Rod Seal for use
in constructions where internal earths are specified.
Unique design allows the seals to be used with a broad range of
rod diameters. Use with PPIT-G Plastic Inspection Pit (page EAR:26).

ROD DIA. ROD TYPE LENGTH WEIGHT PART NO.

(in : mm) (mm) (kg)
5/8" UNC Copperbond 1200 2.80 KES-58-DBL
3/4" UNC Copperbond 1200 2.80 KES-34-DBL
15mm Solid Copper/Stainless Steel 1200 2.80 KES-15-DBL
16mm Solid Copper/Stainless Steel 1200 2.80 KES-16-DBL
20mm Solid Copper/Stainless Steel 1200 2.80 KES-20-DBL
Material: High Density Plastic
Standard: BS:EN 62561-5:2011 and an extended 5 day test following
BS:EN 62561-5 test conditions.

350mm dia

Plastic Inspection Pit (sold separately)

2
50mm
min cover
Kingsmill Double Flange Earth Rod Seals have been
designed for use in concrete slabs with a nominal 1
228mm
thickness of 300mm. They will withstand a pressure up to
PVC Duct
3
80psi (5.5 bar) and have been tested accordingly. (not supplied) 4
5
1 Plastic Inspection Pit (Sold Separately) 7
6
2 Seal Cap
3 ‘O’ Ring Rod Seal
4 Compression Collar
5 EDPM Flat Seal Washer 8
Concrete
6 Seal Housing Slab

7 Inspection Pit Lock Nut 11

10
8 Seal Tube Coupler
1200mm
9 Seal Tube
10 Bottom Flange
11 Earth Rod (sold separately)
DPM adhered to underside
of Seal Housing using
proprietary mastic Blinding Coat
/Sub Soil
9

APPLICATION

Benefits:
Earth Rod Seal Earth Pit Earth Rod Additional Earth Rods can be driven at a later date, with no additional parts
or causing damage to the Earth Rod Seal.

Extended Seal Tubes

The Double Flange Earth Rod Seal is supplied with a 300mm long
seal tube. Longer tube lengths are available (see below).
Installation Notes: DESCRIPTION LENGTH (mm) WEIGHT (kg) PART NO.
Ingress of water from anywhere other than around the Earth Rod Seal is the
responsibility of the installation contractor. The Earth Rod Seal flange and 500mm seal tube 500 0.12 KES-TUBE-500
components must be free from dust/debris/grease/paint before pouring the 1200mm seal tube 1200 0.28 KES-TUBE-1200
concrete (highest quality and fully compacted to ensure sealing).
2000mm seal tube 2000 0.47 KES-TUBE-2000
Performance depends on the integrity of the surrounding concrete. The main
concrete slab must not be shuttered out and the Earth Rod Seal fitted later. 3000mm seal tube 3000 0.70 KES-TUBE-3000

EAR:28 EARTHING: EARTH ROD SEALS

CLAMPS EARTHING

Rod To Tape Clamps (A Type)

Rod To Tape Type ‘A’ Clamps are designed to join various sizes of conductor tape to
the earth electrode.
The clamps have a high resistance to corrosion and are mechanically strong to
ensure a lasting connection.
ROD DIAMETER MAX CONDUCTOR BOLT SIZE BOLT MATERIAL WEIGHT PART NO.
(in : mm) SIZE (mm) (mm) (kg)
5/8 : 16 - 3/4 : 20 29 x 16 - 29 x 13 M10 Stainless steel 0.10 CLA2530
5/8 : 16 - 3/4 : 20 29 x 16 - 29 x 13 M10 Stainless steel 0.23 CLA2510
5/8 : 16 - 3/4 : 20 29 x 16 - 29 x 13 M10 Stainless steel 0.21 CLA4012
5/8 : 16 - 3/4 : 20 29 x 16 - 29 x 13 M10 Stainless steel 0.21 CLA5060
5/8 : 16 - 3/4 : 20 29 x 16 - 29 x 13 M10 Phosphor bronze 0.10 CLA2530/PB
5/8 : 16 - 3/4 : 20 29 x 16 - 29 x 13 M10 Phosphor bronze 0.23 CLA2510/PB
5/8 : 16 - 3/4 : 20 29 x 16 - 29 x 13 M10 Phosphor bronze 0.21 CLA4012/PB
5/8 : 16 - 3/4 : 20 29 x 16 - 29 x 13 M10 Phosphor bronze 0.21 CLA5060/PB
Material: High Strength Copper Alloy (body), Stainless Steel or Phosphor Bronze (bolt)
Standard: BS:EN 62561-1 Class H, BS 7430
Tightening torque: 15Nm

Rod To Tape Clamps (U Bolt Single Plate Type)

Rod To Tape Type ‘U’ Bolt Single Plate Clamps are designed to join various sizes of
conductor tape to the earth electrode.
The clamps have a high resistance to corrosion and are mechanically strong to
ensure a lasting connection.

ROD DIAMETER (in : mm) HOLE CENTRES (mm) WEIGHT (kg) PART NO.
5/8 : 16 37 0.21 CLUB16
3/4 : 20 37 0.21 CLUB20
1 : 25 37 0.22 CLUB25
1 1/4 : 30 43 0.22 CLUB30
2 : 50 64 0.36 CLUB50
Material: High Strength Copper Alloy (body), 99.9% HD Copper (‘U’ bolt)
Standard: BS:EN 62561-1 Class H, BS 7430
Tightening torque: 12Nm

EARTHING: CLAMPS EAR:29

 EARTHING CLAMPS

Rod To Tape Clamps (U Bolt Double Plate Type)

Rod To Tape Type Clamps (U Bolt Double Plate Type) join 25 x 3 conductor
tape to the earth electrode/rebar without the need to drill the tape.
The clamps have a high resistance to corrosion and are mechanically strong
to ensure a lasting connection.
ROD DIAMETER (in : mm) TAPE WIDTH (mm) WEIGHT (kg) PART NO.
5/8 : 16 25 0.26 CLUB16-2
3/4 : 20 25 0.27 CLUB20-2
1 : 25 25 0.28 CLUB25-2
2 : 50 25 0.40 CLUB50-2

Material: High Strength Copper Alloy (body)

99.9% HD copper (‘U’ bolt material)
Standard: BS 7430
Tightening torque: 12Nm

Rod To Cable Clamps (JAB Type)

Rod To Cable Clamps (JAB Type) are used to join various sizes of cable to
the earth electrode.
The clamps have a high resistance to corrosion and are mechanically strong
to ensure a lasting connection.
ROD DIAMETER CONDUCTOR BOLT MATERIAL BOLT SIZE WEIGHT PART NO.
(in : mm) RANGE (mm²) (mm) (kg)
5/8” : 16mm 16 - 70 Stainless steel M10 0.07 CLJA16
3/4” : 20mm 35 - 95 Stainless steel M10 0.09 CLJA20
5/8” : 16mm 16 - 70 Phosphor bronze M10 0.07 CLJA16/PB
3/4” : 20mm 35 - 95 Phosphor bronze M10 0.09 CLJA20/PB

Material: High Strength Copper Alloy (body)

Stainless steel/phosphor bronze (bolt - see table)
Standard: BS:EN 62561-1 class H, BS 7430
Tightening torque: 12Nm

Rod To Strand Clamp

The Rod To Strand Clamp connects Earth Rods to stranded conductor.
ROD DIAMETER (in : mm) CONDUCTOR RANGE (mm2) WEIGHT (kg) PART NO.
5/8” : 16mm 35 - 70 0.38 CGUV16S

Material: Bronze (body), 99.9% HD Copper (‘U’ bolt)

EAR:30 EARTHING: CLAMPS

CLAMPS EARTHING

Rod to Cable Clamps (GUV Type)

Rod to Cable Clamps (GUV Type) are designed to join various sizes of
cable to earth electrodes/rebars etc. They have a high resistance to
corrosion and are mechanically strong to ensure a lasting connection.
ROD DIAMETER (in : mm) CONDUCTOR RANGE (mm²) WEIGHT (kg) PART NO.
5/8 : 16 - 3/4 : 20 16 - 70 0.39 CGUV16
5/8 : 16 - 3/4 : 20 70 - 185 0.35 CGUV70
5/8 : 16 - 3/4 : 20 150 - 300 0.52 CGUV150
Material: High Tensile Copper Alloy (body)
99.9% HD Copper (‘U’ bolt)
Standard: BS:EN 62561-1, Class H
Tightening torque: 12Nm CGUV16 & CGUV70

CGUV150

Rod To Cable Clamps (Keyhole Type)

Rod To Cable Clamps (Keyhole Type) are designed to join various sizes of
compression lugs to the earth electrode. They have a high resistance to
corrosion and are mechanically strong to ensure a lasting connection.
For use with copperbond rods
ROD DIAMETER BOLT MATERIAL BOLT SIZE WEIGHT (kg) PART NO.
9.5mm Stainless steel M08 0.09 CLUG10
5/8" UNC Stainless steel M10 0.22 CLUG16
3/4" UNC Stainless steel M10 0.20 CLUG20
9.5mm Phosphor bronze M08 0.09 CLUG10/PB
5/8" UNC Phosphor bronze M10 0.22 CLUG16/PB
3/4" UNC Phosphor bronze M10 0.20 CLUG20/PB

For use with solid copper rods

ROD DIAMETER (mm) BOLT MATERIAL BOLT SIZE WEIGHT (kg) PART NO.
15 Stainless steel M10 0.21 CLUG15S
16 Stainless steel M10 0.28 CLUG16S
20 Stainless steel M10 0.18 CLUG20S
15 Phosphor bronze M10 0.21 CLUG15S/PB
16 Phosphor bronze M10 0.28 CLUG16S/PB
20 Phosphor bronze M10 0.18 CLUG20S/PB
Material: High Tensile Copper Alloy (body)
Stainless Steel or Phosphor Bronze (bolt - see above)
Standard: BS:EN 62561-1 Class H, BS7430
Tightening torque: 12Nm

EARTHING: CLAMPS EAR:31

 EARTHING ACCESSORIES

Tinmans Solder
Tinmans solder is used to braze copper bar and tape.
DESCRIPTION LENGTH (mm) WEIGHT (kg) PART NO.
Tinmans solder (1/2lb stick) 300 0.26 TINS1/2
Material: Tin (60%), Lead (40%)

Denso Tape
Denso Tape offers a weatherproof seal when wrapped around joints to
stop the ingress of moisture, preventing corrosion.
COIL SIZE (mm) MATERIAL WEIGHT (kg) PART NO.
50 x 10000 Synthetic fabric 0.76 DEN050
Material: Synthetic - impregnated and coated with a neutral petroleum
compound

Inteltrox Oxide Inhibiting Paste

Inteltrox Paste assures a high conductivity joint by sealing out air and
moisture for prevention of corrosion and reformation of oxide film.
Recommended for use on aluminium to copper connections, bare
conductors or bus bar.
DESCRIPTION SIZE (kg) PART NO.
Inteltrox anti-oxide compound 0.25 INTELTROX250

Supplied in a squeezy bottle with a resealable plastic cap.

Silfos
Silfos allows copper to be brazed in air without the use of flux.
SIZE (W x L) MATERIAL WEIGHT PART NO.
(mm) (kg)
50 x 8000 Silver, phosphorus and copper alloy 0.425 SF050

EAR:32 EARTHING: ACCESSORIES