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Basic Electricity 101: American Wire Gauge Chart

gauge Diameter Inches X-Section (in2) Diameter mm X-Section (mm2) Ohms per 1000 ft Ohms per km Maximum amps for chassis wiring Maximum amps for power transmission
OOOO 0.46 0.166196 11.684 107.222966 0.0490 0.16072 380 302
OOO 0.4096 0.131772 10.40384 85.014313 0.0618 0.20270 328 239
OO 0.3648 0.104524 9.26592 67.434449 0.0779 0.25551 283 190
0 0.3249 0.082909 8.25246 53.489874 0.0983 0.32242 245 150
1 0.2893 0.065736 7.34822 42.410073 0.1239 0.40639 211 119
2 0.2576 0.052119 6.54304 33.625122 0.1563 0.51266 181 94
3 0.2294 0.041332 5.82676 26.666068 0.197 0.64616 158 75
4 0.2043 0.032782 5.18922 21.149928 0.2485 0.81508 135 60
5 0.1819 0.025988 4.62026 16.766312 0.3133 1.02762 118 47
6 0.162 0.020613 4.1148 13.298485 0.3951 1.29593 101 37
7 0.1443 0.016355 3.66522 10.551272 0.4982 1.63410 89 30
8 0.1285 0.012969 3.2639 8.367166 0.6282 2.06050 73 24
9 0.1144 0.010279 2.90576 6.631690 0.7921 2.59809 64 19
10 0.1019 0.008156 2.58826 5.261633 0.9989 3.27639 55 15
11 0.0907 0.006461 2.30378 4.168566 1.26 4.1328 47 12
12 0.0808 0.005128 2.05232 3.308224 1.588 5.20864 41 9.3
13 0.072 0.004072 1.8288 2.626861 2.003 6.56984 35 7.4
14 0.0641 0.003227 1.62814 2.082036 2.525 8.282 32 5.9
15 0.0571 0.002561 1.45034 1.652131 3.184 10.44352 28 4.7
16 0.0508 0.002027 1.29032 1.307674 4.016 13.17248 22 3.7
17 0.0453 0.001612 1.15062 1.039845 5.064 16.60992 19 2.90
18 0.0403 0.001276 1.02362 0.822967 6.385 20.9428 16 2.3
19 0.0359 0.001012 0.91186 0.653072 8.051 26.40728 14 1.8
20 0.032 0.000804 0.8128 0.518886 10.15 33.292 11 1.5
21 0.0285 0.000638 0.7239 0.411587 12.8 41.984 9 1.2
22 0.0254 0.000507 0.64516 0.326919 16.14 52.9392 7 0.92
23 0.0226 0.000401 0.57404 0.258815 20.36 66.7808 4.7 0.729
24 0.0201 0.000317 0.51054 0.204722 25.67 84.1976 3.5 0.577
25 0.0179 0.000252 0.45466 0.162360 32.37 106.1736 2.7 0.457
26 0.0159 0.000199 0.40386 0.128105 40.81 133.8568 2.2 0.361
27 0.0142 0.000158 0.36068 0.102176 51.47 168.8216 1.70 0.288
28 0.0126 0.000125 0.32004 0.080448 64.9 212.872 1.4 0.226
29 0.0113 0.000100 0.28702 0.064704 81.83 268.4024 1.2 0.182
30 0.01 0.000079 0.254 0.050672 103.2 338.496 0.86 0.142
31 0.0089 0.000062 0.22606 0.040138 130.1 426.728 0.7 0.113
32 0.008 0.000050 0.2032 0.032430 164.1 538.248 0.53 0.091

One Response to Basic Electricity 101: American Wire Gauge Chart

  1. Phil says:

    love the table… very handy! Thanks

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