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Traffic Engineering (TE)

Cross sectional areas of various
conduit sizes & wire types and sizes


Cross sectional areas of various conduit sizes


Area units are in square millimeters (1 IN = 25.381 MM)


CONDUIT
TRADE
SIZE
RIGID METALLIC RIGID NONMETALLIC
(SCHEDULE 40)
100 % AREA 40 % AREA 100 % AREA 40 % AREA
41 1334.380 533.752 1279.091 511.637
53 2195.260 878.104 2120.035 848.014
63 3134.420 1253.768 3024.580 1209.832
78 4830.858 1932.343 4681.939 1872.776

The above conduit values are from table 4, chapter 9 of the National Electrical Code (NEC).

Cross sectional areas of various wire types and sizes


Area units are in square millimeters (1 IN = 25.381 MM)


NUMBER
OF
CONDUCTORS
LOOP DETECTOR
TYPE XHHW
TRAFFIC SIGNAL CABLE
TYPE XHHW
2/C #14 2/C #14 5/C #14 10/C #14
1 73.059 67.405 107.059 207.237
2 146.118 134.810 214.118 414.474
3 219.177 202.215 321.177 621.711
4 292.237 269.621 428.236 828.948
5 365.296 337.026 535.295 1036.185
6 438.355 404.431 642.354 1243.422
7 511.414 471.836 749.413 1450.659
8 584.473 539.241 856.472 1657.896
9 657.532 606.646 963.531 1865.133
10 730.591 674.051 1070.590 2072.370

The above loop detector and traffic signal cable values are actual cable dimensions of material approved by the NJDOT in accordance with note 5, chapter 9 of the NEC.

NUMBER
OF
CONDUCTORS
MULTIPLE LIGHTING WIRE
TYPE RHW
GROUND WIRE
TYPE THW

#2 AWG #4 AWG #6 AWG #8 AWG #10 AWG #8 AWG
(BARE)
#8 AWG
(INSULATED)
1 112.717 85.882 67.036 53.770 28.179 10.785 35.799
2 225.435 171.764 134.073 107.541 56.359 21.570 71.598
3 338.152 257.646 201.109 161.311 84.538 32.354 107.397
4 450.870 343.528 268.145 215.081 112.717 43.139 143.196
5 563.587 429.410 335.182 268.852 140.897 53.924 178.995
6 676.305 515.292 402.218 322.622 169.076 64.709 214.794
7 789.022 601.173 469.254 376.392 197.256 75.494 250.593
8 901.740 687.055 536.290 430.162 225.435 86.279 286.392
9 1014.457 772.937 603.327 483.933 253.614 97.063 322.191
10 1127.175 858.819 670.363 537.703 281.794 107.848 357.990

The above Multiple Lighting and Ground Wire values are from table 5 and table 8, chapter 9 of the NEC.(NEC)

 
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  Last Updated:  June 25, 2009