10 - Conduit Sizing Calculation

Sizing Conduits - Fill Factor

Fill factor or conduit fill, states the maximum amount of space that
the installed cables should occupy in a given size conduit, expressed as
a percentage of the interior volume. On the subject of fill factor
percentages, Consider the percentages that are mandated by the
National Electrical Code, Chapter 9, Table 1 . where the table
indicates number of conductors, the word conductors, may also
indicate multi-conductor cables. For example, if we were planning
to pull three cables into a conduit, the combined cross-sectiona
area of the three cables, must not exceed 40% of the conduits interior
volume. Because the table does not specify high or low-voltage cable(s),
it can cable(s),

Number of Conductor
Percent Fill (all
conductor types)

over 2

53%

31%

40%

National Electrical Code, Chapter 9, Table 1

Table 1 is based on common conditions of proper cabling and alignment
of conductors, where the length of the pull and number of bends are
within reasonable limits. It should be recognized that, for certain
conditions, a larger size conduit, lesser conduit fill should be considered.
The smallest percent fill, on the table is for two conductors (no more
than 31% of the conduits interior volume). The reason for this is that
two conductors, of the same size, collectively form an oval shape. One
, or any number of cables greater than two, will tend to form a circular
shape (see figure ZZ).

FIGURE ZZ

Contract No. PID N-075106

Calculating Fill Factor

When we calculate fill factor, normally we start out knowing how many
cables we need to get from point A to point B. The question is: What size
conduit? Or, sometimes a conduit will be existing and we will need to
calculate the amount of cables that we may install in it. Once you master
the principles of NEC Table 4, and the formula for cross-sectional area,
you can easily find either.
Rigid PVC Conduit
NEC Table 4
Trade
Size
Inches

Internal
Diameter
Inches

Total Area 100%

Sq. In.

2 Wires
31%
Sq. In.

0.5
0.75
1
1.25
1.5
2
2.5
3
3.5
4
5
6

0.526
0.722
0.936
1.255
1.476
1.913
2.29
2.864
3.326
3.786
4.768
5.709

0.217
0.409
0.688
1.237
1.711
2.874
4.119
6.442
8.688
11.258
17.855
25.935

0.067
0.127
0.213
0.383
0.53
0.891
1.277
1.997
2.693
3.49
5.535
7.935

Over 2
Wires 40%
Sq. In.

1 Wire
53%
Sq. In.

0.087
0.164
0.275
0.495
0.684
1.15
1.647
2.577
3.475
4.503
7.142
10.239

0.115
0.217
0.365
0.656
0.907
1.1523
2.183
3.414
4.605
5.967
9.463
13.567

Over 2
Wires 40%
Sq. In.

1 Wire
53%
Sq. In.

0.122
0.213
0.346
0.598
0.814
1.342
2.343
3.538
4.618
5.901

0.161
0.283
0.458
0.793
1.079
1.778
3.105
4.688
6.119
7.819

Electrical Metallic Tubing

NEC Table 4 (Continued)
Trade
Size
Inches

Internal
Diameter
Inches

Total Area 100%

Sq. In.

2 Wires
31%
Sq. In.

1
1
1
2
2
3
3
4

0.622
0.824
1.049
1.38
1.61
2.067
2.731
3.356
3.834
4.334

0.304
0.533
0.86
1.496
2.036
3.356
5.858
8.846
11.545
14.753

0.094
0.165
0.268
0.464
0.631
1.04
1.816
2.742
3.579
4.573

Note: Shown is only the Electrical Metallic Tubing (EMT) portion

of NEC table 4.
Determine the cross-sectional area(CSA), for each cable, simply add the
CSA (or multiply for same size cables) for each cable to find the Total CSA

Contract No. PID N-075106

Radius of Bends
To comply with the NEC, need only use a standard conduit bending devise
, or purchase pre-fabricated bends.Manufacturers of conduits and
their bending apparatuses, make their products to comply with the NEC
table 343-10.On bend radius for Nonmettalic Conduit and NEC table 34610 EMT Conduit.
Nonmettalic Conduit Size Standard with its Radius of Bends Comply
With the NEC Table 343-10
Conduit Size

Radius of Bends

1
1
1
2
2
3
4

10
12
14
18
20
26
36
48
60

EMT Conduit Size Standard with its Radius of Bends Comply

With the NEC Table 346-10
Conduit Size

Radius of Bends

1
1
1
2
2
3
3
4

4
4.5
5.75
7.25
8.25
9.5
10.5
13
15
16

Contract No. PID N-075106

SR. NO
OF
NO. SET

CABLE

Total Cross Section area

CROSS SECTION AREA mm2
for Cables mm2

NO.

total Cross Conduit

Sec.area
CON.DIM
2
type
(mm)
In

CA - 06 ( 3 - 1C 300 +

1- 1C

300

) + 1-

1C

95

1722.29

2.6695548

RGS

110mm

CA - 07 ( 3 - 1C 185 +

1- 1C

185

) + 1-

1C

50

1722.29

1.3830582

PVC

110mm

1- 1C

70

11111111111-

1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C

185
70
25
70
16
6
4
4
6
6
10

+
)+
+
)+
)+
)+
)+
)+
)+
)+
)+
)+
)+
)+

11111111111111-

1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C

25
16
25
50
16
10
16
10
6
4
4
6
6
10

892.2938
772.9424
892.2938
1722.29
772.9424
432.7234
772.9424
318.553
226.708
192.325
192.325
226.708
226.708
263.917

1.3830582
1.1980631
1.3830582
2.6695548
1.1980631
0.6707226
1.1980631
0.4937581
0.3513981
0.2981043
0.2981043
0.3513981
0.3513981
0.4090722

EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT

63mm
50mm
63mm
75mm
50mm
40mm
50mm
32mm
32mm
25mm
25mm
32mm
32mm
32mm

1- 1C

150

) + 1-

1C

50

1452.25

2.250992

PVC

110mm

1- 1C

50

11111111-

1C
1C
1C
1C
1C
1C
1C
1C

50
35
35
25
6
6
6
6

+
)+
+
)+
+
)+
)+
)+
)+
)+
)+

11111111111-

1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C

10
16
10
16
10
10
10
6
6
6
6

337.7384
597.1024
337.7384
597.1024
391.9034
504.9434
432.7234
226.708
226.708
226.708
226.708

0.5234956
0.9255106
0.5234956
0.9255106
0.6074515
0.7826638
0.6707226
0.3513981
0.3513981
0.3513981
0.3513981

EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT

32mm
50mm
32mm
50mm
40mm
40mm
40mm
32mm
32mm
32mm
32mm

1- 1C

185

) + 1-

1C

50

1722.29

2.6695548

PVC

110mm

+ 1-

1C

10

211.1336

0.3272577

EMT

25mm

) + 1-

1C

10

432.7234

0.6707226

EMT

40mm

) + 1-

1C

10

211.1336

0.3272577

EMT

25mm

) + 1-

1C

192.325

0.2981043

EMT

25mm

CA - 07A (
CA - 07B (
CA - 07C (
CA - 07D (
CA - 07E (
CA - 07F (
CA - 07G (
CA - 07H (
CA - 07I (
CA - 07J (
CA - 07K (
CA - 07L (
CA - 07M (
CA - 07N (
3

1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C
1C

CA -08 ( 3 - C
CA -08A
CA -08B
CA -08C
CA -08D
CA -08E
CA -08F
CA -08G
CA -08H
CA -08I
CA -08J
CA -08K

3
3
3
3
3
3
3
3
3
3
3
3
3
3

(
(
(
(
(
(
(
(
(
(
(

3
3
3
3
3
3
3
3
3
3
3

C
C
C
C
C
C
C
C
C
C
C

CA -09 ( 3 - C

120
70
120
185
70
25
70
16
6
4
4
6
6
10

)
+
)
+
+
+
+
+
+
+
+
+
+
+

150 +
25
50
25
50
35
35
25
6
6
6
6

)
+
)
+
+
+
+
+
+
+
+

185 +

CA -09A ( 3 - C

10

CA -09B ( 3 - C

25

CA -09C ( 3 - C

10

CA -09D ( 3 - C

1- 1C

1- 1C

25

Contract No. PID N-075106

SR. NO
OF
NO. SET

CROSS SECTION AREA mm2

NO.
CA -09E
CA -09F
CA -09G
CA -09H
CA -09I
CA -09J
CA -09K

for Cables mm2

(
(
(
(
(
(
(

3
3
3
3
3
3
3

C
C
C
C
C
C
C

CA -10 ( 3 - C
CA -10A
CA -10B
CA -10C
CA -10D
CA -10E
CA -10F
CA -10G
CA -10H
CA -10I

(
(
(
(
(
(
(
(
(

3
3
3
3
3
3
3
3
3

50
25
70
50
4
6
6

+
+
+
+
+
+
+

150 +

C
C
C
C
C
C
C
C
C

10
25
10
16
16
25
16
16
6

)
+
)
+
+
+
+
+
+

CA -11 ( 3 - C

50

CA -11A ( 3 - C
CA -11B ( 3 - C
CA -11C ( 3 - C

total Cross Conduit

CON.DIM
Sec.area
2
type
(mm)
In
50mm
0.9255106 EMT
40mm
0.6707226 EMT
50mm
1.1980631 EMT
50mm
EMT
0.93
25mm
0.3202979 EMT
32mm
0.3513981 EMT
32mm
0.3513981 EMT

1C
1C
1C
1C
1C
1C
1C

50
25
70
50
4
6
6

)
)
)
)
)
)
)

1111111-

1C
1C
1C
1C
1C
1C
1C

16
10
16
16
4
6
6

597.1024
432.7234
772.9424
597.1024
206.6434
226.708
226.708

1- 1C

150

) + 1-

1C

50

1452.25

2.250992

PVC

110mm

+
+
+
+
+
+
+
+
+

111111111-

1C
1C
1C
1C
1C
1C
1C
1C
1C

10
10
10
10
10
10
10
10
6

211.1336
432.7234
211.1336
318.553
318.553
432.7234
318.553
318.553
226.708

0.3272577
0.6707226
0.3272577
0.4937581
0.4937581
0.6707226
0.4937581
0.4937581
0.3513981

EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT
EMT

25mm
40mm
25mm
32mm
32mm
40mm
32mm
32mm
32mm

1111111-

+
+
+
+
+
+
+

1- 1C

25

111111-

1C
1C
1C
1C
1C
1C

16
16
25
16
16
6

)
)
)
)
)
)
)
)

1- 1C

50

) + 1-

1C

16

597.1024

0.9255106

PVC

110mm

16

1- 1C

16

) + 1-

1C

10

318.553

0.4937581

EMT

32mm

16

1- 1C

16

) + 1-

1C

10

318.553

0.4937581

EMT

32mm

16

1- 1C

16

) + 1-

1C

10

318.553

0.4937581

EMT

32mm

CA - 05 ( 3 - 1C 300 +

1- 1C

300

) + 1-

1C

95

2867.605

4.4447966

RGS

110mm

CA - 05A ( 3 - 1C 185 +

1- 1C

185

) + 1-

1C

50

1722.29

2.6695548

PVC

110mm

CA - 05B ( 3 - 1C 185 +

1- 1C

185

) + 1-

1C

50

1722.29

2.6695548

PVC

110mm

CA - 05C ( 3 - 1C 185 +

1- 1C

185

) + 1-

1C

50

1722.29

2.6695548

PVC

110mm

3.14

Total Cross Section area

CABLE

Area for cross section=

( r )2

Contract No. PID N-075106

CA - 06 ( SET 1)

Area for cross section= 3.14

Area for cross section=
Area for cross section=
Area for cross section=
Total Cross Section area

300
300
95

( r )2

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 210.3
X 210.3
X 72.25

660.19 +

660.2

=
=
=

660.19 mm2 (Ph.Conductor)

660.19 mm2 (N.Conductor)
226.87 mm2 (E.Conductor)

226.87

2868 mm2

2
=
2867.605
/
645.16
4.44479664 In
=
From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
110mm

CA - 07 ( SET 1)

Area for cross section= 3.14

Area for cross section=
Area for cross section=
Area for cross section=

185
185
50

Total Cross Section area =

( r )2

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 126.6
X 126.6
X 42.25

397.41 +

397.4

=
=
=

397.41 mm2 (Ph.Conductor)

397.41 mm2 (N.Conductor)
132.67 mm2 (E.Conductor)

132.7

1722 mm2

2
= 2.669554839 In
1722.29
/
645.16
=
From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .
110mm
We choose the conduit size

CA - 07A

Area for cross section=

Area for cross section=

120
25

Total Cross Section area =

mm2 =
mm2 =
3

3.14
3.14

X 84.64
X 30.25

265.77 +

=
=

265.77 mm2 (Ph.Conductor)

94.99 mm2 (E.Conductor)

94.99

892 mm2

2
= 1.383058156 In
/
645.16
892.2938
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size=
63mm

CA - 07B

Area for cross section=

Area for cross section=
Area for cross section=

70
70
16

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 56.25
X 56.25
X 21.16

176.63 +

176.6

=
=
=

176.63 mm2 (Ph.Conductor)

176.63 mm2 (N.Conductor)
66.44 mm2 (E.Conductor)

66.44

773 mm2

2
772.9424
= 1.198063116 In
/
645.16
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
50mm
We choose the conduit size=

CA - 07C

Area for cross section=

Area for cross section=

120
25

Total Cross Section area =

mm2 =
mm2 =
3

3.14
3.14

X 84.64
X 30.25

265.77 +

=
=

265.77 mm2 (Ph.Conductor)

94.99 mm2 (E.Conductor)

94.99

=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size=
63mm
892.2938

645.16

892 mm2

1.383058156 In

Contract No. PID N-075106

CA - 07D

Area for cross section=

Area for cross section=
Area for cross section=

185
185
50

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 126.6
X 126.6
X 42.25

397.41 +

397.4

=
=
=

397.41 mm2 (Ph.Conductor)

397.41 mm2 (N.Conductor)
132.67 mm2 (E.Conductor)

132.7

1722 mm2

2
645.16
= 2.669554839 In
1722.29
/
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
75mm
We choose the conduit size=

CA - 07E

Area for cross section=

Area for cross section=
Area for cross section=

70
70
16

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 56.25
X 56.25
X 21.16

176.63 +

176.6

=
=
=

176.63 mm2 (Ph.Conductor)

176.63 mm2 (N.Conductor)
66.44 mm2 (E.Conductor)

66.44

773 mm2

2
645.16
= 1.198063116 In
772.9424
/
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
50mm
We choose the conduit size=

CA - 07F

Area for cross section=

Area for cross section=
Area for cross section=

25
25
10

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 30.25
X 30.25
X 16.81

94.985 +

94.99

=
=
=

94.99 mm2 (Ph.Conductor)

94.99 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

433 mm2

2
645.16
= 0.670722611 In
432.7234
/
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
40mm
We choose the conduit size=

CA - 07G

Area for cross section=

Area for cross section=
Area for cross section=

70
70
16

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 56.25
X 56.25
X 21.16

176.63 +

176.6

=
=
=

176.63 mm2 (Ph.Conductor)

176.63 mm2 (N.Conductor)
66.44 mm2 (E.Conductor)

66.44

773 mm2

2
645.16
772.9424
/
= 1.198063116 In
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
50mm
We choose the conduit size=

CA - 07H

Area for cross section=

Area for cross section=
Area for cross section=

16
16
10

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 21.16
X 21.16
X 16.81

66.442 +

66.44

=
=
=

66.44 mm2 (Ph.Conductor)

66.44 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

319 mm2

2
= 0.493758138 In
318.553
/
645.16
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size=
32mm

Contract No. PID N-075106

CA - 07I

Area for cross section=

Area for cross section=
Area for cross section=

6
6
6

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 14.44
X 14.44
X 14.44

45.342 +

45.34

=
=
=

45.34 mm2 (Ph.Conductor)

45.34 mm2 (N.Conductor)
45.34 mm2 (E.Conductor)

45.34

227 mm2

2
= 0.351398103 In
226.708
/
645.16
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
32mm
We choose the conduit size=

CA - 07J

Area for cross section=

Area for cross section=
Area for cross section=

4
4
4

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 12.25
X 12.25
X 12.25

38.465 +

38.47

=
=
=

38.47 mm2 (Ph.Conductor)

38.47 mm2 (N.Conductor)
38.47 mm2 (E.Conductor)

38.47

192 mm2

2
= 0.298104346 In
192.325
/
645.16
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size=
25mm

CA - 07K

Area for cross section=

Area for cross section=
Area for cross section=

4
4
4

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 12.25
X 12.25
X 12.25

38.465 +

38.47

=
=
=

38.47 mm2 (Ph.Conductor)

38.47 mm2 (N.Conductor)
38.47 mm2 (E.Conductor)

38.47

192 mm2

2
645.16
= 0.298104346 In
192.325
/
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
25mm
We choose the conduit size=

CA - 07L

Area for cross section=

Area for cross section=
Area for cross section=

6
6
6

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 14.44
X 14.44
X 14.44

45.342 +

45.34

=
=
=

45.34 mm2 (Ph.Conductor)

45.34 mm2 (N.Conductor)
45.34 mm2 (E.Conductor)

45.34

227 mm2

2
645.16
= 0.351398103 In
226.708
/
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
32mm
We choose the conduit size=

CA - 07M

Area for cross section=

Area for cross section=
Area for cross section=

6
6
6

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 14.44
X 14.44
X 14.44

45.342 +

45.34

=
=
=

45.34 mm2 (Ph.Conductor)

45.34 mm2 (N.Conductor)
45.34 mm2 (E.Conductor)

45.34

227 mm2

2
645.16
226.708
= 0.351398103 In
/
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size=
32mm

Contract No. PID N-075106

CA - 07N

Area for cross section=

Area for cross section=
Area for cross section=

10
10
10

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 16.81
X 16.81
X 16.81

52.783 +

52.78

=
=
=

52.78 mm2 (Ph.Conductor)

52.78 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

264 mm2

2
= 0.409072168 In
263.917
/
645.16
=
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size=
32mm

CA -08 ( SET 1)

Area for cross section=

Area for cross section=
Area for cross section=

150
150
50

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 105.1
X 105.1
X 42.25

329.9 +

329.9

=
=
=

329.90 mm2 (Ph.Conductor)

329.90 mm2 (N.Conductor)
132.67 mm2 (E.Conductor)

132.7

1452 mm2

2
1452.25
= 2.250992002 In
=
/
645.16
From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
110mm

CA -08A

Area for cross section=

Area for cross section=

25
10

Total Cross Section area =

mm2 =
mm2 =
3

3.14
3.14

X 30.25
X 16.81

94.985 +

=
=

94.99 mm2 (Ph.Conductor)

52.78 mm2 (E.Conductor)

52.78

338 mm2

2
= 0.523495567 In
=
337.7384
/
645.16
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
32mm

CA -08B

Area for cross section=

Area for cross section=
Area for cross section=

50
50
16

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 42.25
X 42.25
X 21.16

132.67 +

132.7

=
=
=

132.67 mm2 (Ph.Conductor)

132.67 mm2 (N.Conductor)
66.44 mm2 (E.Conductor)

66.44

597 mm2

2
645.16
=
597.1024
/
= 0.925510571 In
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
50mm

CA -08C

Area for cross section=

Area for cross section=

25
10

Total Cross Section area =

mm2 =
mm2 =
3

3.14
3.14

X 30.25
X 16.81

94.985 +

=
=

94.99 mm2 (Ph.Conductor)

52.78 mm2 (E.Conductor)

52.78

338 mm2

2
645.16
= 0.523495567 In
=
/
337.7384
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
32mm

Contract No. PID N-075106

CA -08D

Area for cross section=

Area for cross section=
Area for cross section=

50
50
16

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 42.25
X 42.25
X 21.16

132.67 +

132.7

=
=
=

132.67 mm2 (Ph.Conductor)

132.67 mm2 (N.Conductor)
66.44 mm2 (E.Conductor)

66.44

597 mm2

2
=
597.1024
/
645.16
= 0.925510571 In
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
50mm

CA -08E

Area for cross section=

Area for cross section=

35
10

Total Cross Section area =

mm2 =
mm2 =
3

3.14
3.14

X 36
X 16.81

113.04 +

=
=

113.04 mm2 (Ph.Conductor)

52.78 mm2 (E.Conductor)

52.78

392 mm2

2
=
391.9034
/
645.16
= 0.607451485 In
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
40mm

CA -08F

Area for cross section=

Area for cross section=
Area for cross section=

35
35
10

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 36
X 36
X 16.81

113.04 +

113

=
=
=

113.04 mm2 (Ph.Conductor)

113.04 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

505 mm2

2
645.16
=
504.9434
/
= 0.782663835 In
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
40mm

CA -08G

Area for cross section=

Area for cross section=
Area for cross section=

25
25
10

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 30.25
X 30.25
X 16.81

94.985 +

94.99

=
=
=

94.99 mm2 (Ph.Conductor)

94.99 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

433 mm2

2
=
432.7234
/
645.16
= 0.670722611 In
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
40mm

CA -08H

Area for cross section=

Area for cross section=
Area for cross section=

6
6
6

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 14.44
X 14.44
X 14.44

45.342 +

45.34

=
=
=

45.34 mm2 (Ph.Conductor)

45.34 mm2 (N.Conductor)
45.34 mm2 (E.Conductor)

45.34

227 mm2

2
645.16
=
226.708
/
= 0.351398103 In
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
32mm
We choose the conduit size

10

Contract No. PID N-075106

CA -08I

Area for cross section=

Area for cross section=
Area for cross section=

6
6
6

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 14.44
X 14.44
X 14.44

45.342 +

45.34

=
=
=

45.34 mm2 (Ph.Conductor)

45.34 mm2 (N.Conductor)
45.34 mm2 (E.Conductor)

45.34

227 mm2

2
645.16
=
226.708
/
= 0.351398103 In
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
32mm

CA -08J

Area for cross section=

Area for cross section=
Area for cross section=

6
6
6

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 14.44
X 14.44
X 14.44

45.342 +

45.34

=
=
=

45.34 mm2 (Ph.Conductor)

45.34 mm2 (N.Conductor)
45.34 mm2 (E.Conductor)

45.34

227 mm2

2
645.16
=
226.708
/
= 0.351398103 In
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
32mm

CA -08K

Area for cross section=

Area for cross section=
Area for cross section=

6
6
6

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 14.44
X 14.44
X 14.44

45.342 +

45.34

=
=
=

45.34 mm2 (Ph.Conductor)

45.34 mm2 (N.Conductor)
45.34 mm2 (E.Conductor)

45.34

227 mm2

2
=
226.708
/
645.16
= 0.351398103 In
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
32mm

CA -09 ( SET 1)

Area for cross section=

Area for cross section=
Area for cross section=

185
185
50

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 126.6
X 126.6
X 42.25

397.41 +

397.4

=
=
=

397.41 mm2 (Ph.Conductor)

397.41 mm2 (N.Conductor)
132.67 mm2 (E.Conductor)

132.7

1722 mm2

2
=
1722.29
/
645.16
= 2.669554839 In
From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
110mm

CA -09A

Area for cross section=

Area for cross section=

10
10

Total Cross Section area =

=

mm2 =
mm2 =
3

211.1336

3.14
3.14

X 16.81
X 16.81

=
=

52.783 +

52.78 mm2 (Ph.Conductor)

52.78 mm2 (E.Conductor)
52.78

645.16

211 mm2

0.327257735 In

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
25mm

11

Contract No. PID N-075106

CA -09B

Area for cross section=

Area for cross section=
Area for cross section=

25
25
10

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

432.7234

3.14
3.14
3.14

X 30.25
X 30.25
X 16.81

94.985 +

94.99
645.16

=
=
=

94.99 mm2 (Ph.Conductor)

94.99 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

0.670722611 In

433 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

40mm
We choose the conduit size
CA -09C

Area for cross section=

Area for cross section=

10
10

Total Cross Section area =

=

mm2 =
mm2 =
3

211.1336

3.14
3.14

X 16.81
X 16.81

52.783 +

=
=

52.78 mm2 (Ph.Conductor)

52.78 mm2 (E.Conductor)

52.78
645.16

211 mm2

0.327257735 In

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

25mm
We choose the conduit size
CA -09D

Area for cross section=

Area for cross section=
Area for cross section=

4
4
4

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

192.325

3.14
3.14
3.14

X 12.25
X 12.25
X 12.25

38.465 +

38.47
645.16

=
=
=

38.47 mm2 (Ph.Conductor)

38.47 mm2 (N.Conductor)
38.47 mm2 (E.Conductor)

38.47

0.298104346 In

192 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

25mm
We choose the conduit size
CA -09E

Area for cross section=

Area for cross section=
Area for cross section=

50
50
16

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

597.1024

3.14
3.14
3.14

X 42.25
X 42.25
X 21.16

132.67 +

132.7
645.16

=
=
=

132.67 mm2 (Ph.Conductor)

132.67 mm2 (N.Conductor)
66.44 mm2 (E.Conductor)

66.44

0.925510571 In

597 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

50mm
We choose the conduit size
CA -09F

Area for cross section=

Area for cross section=
Area for cross section=

25
25
10

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 30.25
X 30.25
X 16.81

94.985 +

94.99

=
=
=

94.99 mm2 (Ph.Conductor)

94.99 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

433 mm2

2
645.16
= 0.670722611 In
=
432.7234
/
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
40mm
We choose the conduit size

12

Contract No. PID N-075106

CA -09G

Area for cross section=

Area for cross section=
Area for cross section=
Area for cross section=
Total Cross Section area

70
70
16

=
=

mm2 =
mm2 =
mm2 =
3

772.9424

3.14
3.14
3.14

X
X
X
X

176.63 +

mm2 (Ph.Conductor)
mm2 (N.Conductor)
mm2 (E Conductor)
mm2 (E.Conductor)

56.25
56.25
21 16
21.16

=
=
=
=

176.63
176.63
66 44
66.44

176.6

66.44

1.198063116 In

645.16

773 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
50mm
CA -09H

Area for cross section=

Area for cross section=
Area for cross section=
Area for cross section=
Total Cross Section area

50
50
10

=
=

mm2 =
mm2 =
mm2 =
3

597.1024

3.14
3.14
3.14

X
X
X
X

132.67 +

mm2 (Ph.Conductor)
mm2 (N.Conductor)
mm2 (E Conductor)
mm2 (E.Conductor)

42.25
42.25
21 16
16.81

=
=
=
=

132.67
132.67
66 44
52.78

132.7

66.44

2
0.925510571 In

645.16

597 mm2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
50mm
CA -09I
4
Area for cross section=
4
Area for cross section=
Area for cross section=
4
Area for cross section=
Total Cross Section area =

mm2 =
mm2 =

3.14
3.14

mm2 =

3.14

206.6434

X
X
X
X

38.465 +

mm2 (Ph.Conductor)
mm2 (N.Conductor)
mm2 (E Conductor)
mm2 (E.Conductor)

12.25
12.25
16 81
12.25

=
=
=
=

38.47
38.47
52 78
38.47

38.47

52.78

0.320297911 In

645.16

207 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
25mm
CA -09J
6
Area for cross section=
6
Area for cross section=
Area for cross section=
6
Area for cross section=
Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

226.708

3.14
3.14
3.14

X
X
X
X

45.342 +

mm2 (Ph.Conductor)
mm2 (N.Conductor)
mm2 (E Conductor)
mm2 (E.Conductor)

14.44
14.44
#N/A
14.44

=
=
=
=

45.34
45.34
#N/A
45.34

45.34

45.34

0.351398103 In

645.16

227 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
32mm
CA -09K
6
Area for cross section=
6
Area for cross section=
Area for cross section=
6
Area for cross section=
Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

226.708

3.14
3.14
3.14

X
X
X
X

45.342 +

mm2 (Ph.Conductor)
mm2 (N.Conductor)
mm2 (E Conductor)
mm2 (E.Conductor)

14.44
14.44
#N/A
14.44

=
=
=
=

45.34
45.34
#N/A
45.34

45.34

45.34

0.351398103 In

645.16

227 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
32mm

13

Contract No. PID N-075106

CA -10 (SET 1)

Area for cross section=

Area for cross section=
Area for cross section=
Total Cross Section area

150
150
50

=
=

mm2 =
mm2 =
mm2 =
3
X
1452.25

3.14
3.14
3.14

X 105.1
X 105.1
X 42.25

329.9 +

329.9
645.16

=
=
=

329.90 mm2 (Ph.Conductor)

329.90 mm2 (N.Conductor)
132.67 mm2 (E.Conductor)

+
=

132.7
= 1452 mm2
2
2.250992002 In

From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
110mm
CA -10A

Area for cross section=

Area for cross section=

10
10

Total Cross Section area =

=

mm2 =
mm2 =
3

211.1336

3.14
3.14

X 16.81
X 16.81

52.783 +

0
645.16

=
=

52.78 mm2 (Ph.Conductor)

52.78 mm2 (E.Conductor)

52.78

0.327257735 In

211 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
25mm
CA -10B

Area for cross section=

Area for cross section=
Area for cross section=

25
25
10

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

432.7234

3.14
3.14
3.14

X 30.25
X 30.25
X 16.81

94.985 +

94.99
645.16

=
=
=

94.99 mm2 (Ph.Conductor)

94.99 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

0.670722611 In

433 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
40mm
CA -10C

Area for cross section=

Area for cross section=

10
10

Total Cross Section area =

=

mm2 =
mm2 =
3

211.1336

3.14
3.14

X 16.81
X 16.81

52.783 +

0
645.16

=
=

52.78 mm2 (Ph.Conductor)

52.78 mm2 (E.Conductor)

52.78

0.327257735 In

211 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
25mm
CA -10D

Area for cross section=

Area for cross section=
Area for cross section=

16
16
10

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 21.16
X 21.16
X 16.81

66.442 +

66.44

=
=
=

66.44 mm2 (Ph.Conductor)

66.44 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

319 mm2

2
=
645.16
= 0.493758138 In
318.553
/
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
32mm

14

Contract No. PID N-075106

CA -10E

Area for cross section=

Area for cross section=
Area for cross section=

16
16
10

Total Cross Section area =

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 21.16
X 21.16
X 16.81

66.442 +

66.44

=
=
=

66.44 mm2 (Ph.Conductor)

66.44 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

319 mm2

2
645.16
= 0.493758138 In
=
318.553
/
From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .
32mm
We choose the conduit size

CA -10F

Area for cross section=

Area for cross section=
Area for cross section=

25
25
10

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

432.7234

3.14
3.14
3.14

X 30.25
X 30.25
X 16.81

94.985 +

94.99
645.16

=
=
=

94.99 mm2 (Ph.Conductor)

94.99 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

0.670722611 In

433 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
40mm
CA -10G

Area for cross section=

Area for cross section=
Area for cross section=

16
16
10

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

318.553

3.14
3.14
3.14

X 21.16
X 21.16
X 16.81

66.442 +

66.44
645.16

=
=
=

66.44 mm2 (Ph.Conductor)

66.44 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

0.493758138 In

319 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
32mm
CA -10H

Area for cross section=

Area for cross section=
Area for cross section=

16
16
10

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

318.553

3.14
3.14
3.14

X 21.16
X 21.16
X 16.81

66.442 +

66.44
645.16

=
=
=

66.44 mm2 (Ph.Conductor)

66.44 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

0.493758138 In

319 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

32mm
We choose the conduit size
CA -10I

Area for cross section=

Area for cross section=
Area for cross section=

6
6
6

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

226.708

3.14
3.14
3.14

X 14.44
X 14.44
X 14.44

45.342 +

45.34
645.16

=
=
=

45.34 mm2 (Ph.Conductor)

45.34 mm2 (N.Conductor)
45.34 mm2 (E.Conductor)

45.34

0.351398103 In

227 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
32mm

15

Contract No. PID N-075106

CA -11 (SET 1)

Area for cross section=

Area for cross section=
Area for cross section=

50
50
16

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

597.1024

3.14
3.14
3.14

X 42.25
X 42.25
X 21.16

132.67 +

132.7
645.16

=
=
=

132.67 mm2 (Ph.Conductor)

132.67 mm2 (N.Conductor)
66.44 mm2 (E.Conductor)

66.44

2
0.925510571 In

597 mm2

From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
110mm
CA -11A

Area for cross section=

Area for cross section=
Area for cross section=

16
16
10

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

318.553

3.14
3.14
3.14

X 21.16
X 21.16
X 16.81

66.442 +

66.44
645.16

=
=
=

66.44 mm2 (Ph.Conductor)

66.44 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

2
0.493758138 In

319 mm2

From NEC Table 4 (rigid EMTconduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
32mm
CA -11B

Area for cross section=

Area for cross section=
Area for cross section=

16
16
10

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

318.553

3.14
3.14
3.14

X 21.16
X 21.16
X 16.81

66.442 +

66.44
645.16

=
=
=

66.44 mm2 (Ph.Conductor)

66.44 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

0.493758138 In

319 mm2
2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
32mm
CA -11C

Area for cross section=

Area for cross section=
Area for cross section=

16
16
10

Total Cross Section area =

=

mm2 =
mm2 =
mm2 =
3

318.553

3.14
3.14
3.14

X 21.16
X 21.16
X 16.81

66.442 +

66.44
645.16

=
=
=

66.44 mm2 (Ph.Conductor)

66.44 mm2 (N.Conductor)
52.78 mm2 (E.Conductor)

52.78

2
0.493758138 In

319 mm2

From NEC Table 4 (rigid EMT conduit-1 Wire 40 %Sq. In.) .

We choose the conduit size
32mm
CA - 05 ( SET 1)

Area for cross section= 3.14

Area for cross section=
Area for cross section=
Area for cross section=

300
300
95

Total Cross Section area =

( r )2

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 210.3
X 210.3
X 72.25

660.19 +

660.2

=
=
=

660.19 mm2 (Ph.Conductor)

660.19 mm2 (N.Conductor)
226.87 mm2 (E.Conductor)

226.9

2868 mm2

2
=
2867.605
/
645.16
4.44479664 In
=
From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
110mm

16

Contract No. PID N-075106

CA - 05A

Area for cross section= 3.14

Area for cross section=
Area for cross section=
Area for cross section=

185
185
50

Total Cross Section area =

( r )2

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 126.6
X 126.6
X 42.25

397.41 +

397.4

=
=
=

397.41 mm2 (Ph.Conductor)

397.41 mm2 (N.Conductor)
132.67 mm2 (E.Conductor)

132.7

1722 mm2

2
645.16
= 2.669554839 In
1722.29
/
=
From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
110mm

CA - 05B

Area for cross section= 3.14

Area for cross section=
Area for cross section=
Area for cross section=

185
185
50

Total Cross Section area =

( r )2

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 126.6
X 126.6
X 42.25

397.41 +

397.4

=
=
=

397.41 mm2 (Ph.Conductor)

397.41 mm2 (N.Conductor)
132.67 mm2 (E.Conductor)

132.7

1722 mm2

2
= 2.669554839 In
645.16
1722.29
/
=
From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
110mm

CA - 05C

Area for cross section= 3.14

Area for cross section=
Area for cross section=
Area for cross section=

185
185
50

Total Cross Section area =

( r )2

mm2 =
mm2 =
mm2 =
3

3.14
3.14
3.14

X 126.6
X 126.6
X 42.25

397.41 +

397.4

=
=
=

397.41 mm2 (Ph.Conductor)

397.41 mm2 (N.Conductor)
132.67 mm2 (E.Conductor)

132.7

1722 mm2

2
= 2.669554839 In
1722.29
/
645.16
=
From NEC Table 4 (rigid PVC conduit-1 Wire 40 %Sq. In.) .
We choose the conduit size
110mm

17

Contract No. PID N-075106