AWG gauge | Diameter Inches | Diameter mm | Ohms per 1000 ft | Maximum amps for chassis wiring | 1 | 0.2893 | 7.34822 | 0.1239 | 211 | 2 | 0.2576 | 6.54304 | 0.1563 | 181 | 3 | 0.2294 | 5.82676 | 0.197 | 158 | 4 | 0.2043 | 5.18922 | 0.2485 | 135 | 5 | 0.1819 | 4.62026 | 0.3133 | 118 | 6 | 0.162 | 4.1148 | 0.3951 | 101 | 7 | 0.1443 | 3.66522 | 0.4982 | 89 | 8 | 0.1285 | 3.2639 | 0.6282 | 73 | 9 | 0.1144 | 2.90576 | 0.7921 | 64 | 10 | 0.1019 | 2.58826 | 0.9989 | 55 | 11 | 0.0907 | 2.30378 | 1.26 | 47 | 12 | 0.0808 | 2.05232 | 1.588 | 41 | 13 | 0.072 | 1.8288 | 2.003 | 35 | 14 | 0.0641 | 1.62814 | 2.525 | 32 | 15 | 0.0571 | 1.45034 | 3.184 | 28 | 16 | 0.0508 | 1.29032 | 4.016 | 22 | 17 | 0.0453 | 1.15062 | 5.064 | 19 | 18 | 0.0403 | 1.02362 | 6.385 | 16 | 19 | 0.0359 | 0.91186 | 8.051 | 14 | 20 | 0.032 | 0.8128 | 10.15 | 11 |
| AWG gauge | Diameter Inches | Diameter mm | Ohms per 1000 ft | Maximum amps for chassis wiring | 21 | 0.0285 | 0.7239 | 12.8 | 9 | 22 | 0.0254 | 0.64516 | 16.14 | 7 | 23 | 0.0226 | 0.57404 | 20.36 | 4.7 | 24 | 0.0201 | 0.51054 | 25.67 | 3.5 | 25 | 0.0179 | 0.45466 | 32.37 | 2.7 | 26 | 0.0159 | 0.40386 | 40.81 | 2.2 | 27 | 0.0142 | 0.36068 | 51.47 | 1.7 | 28 | 0.0126 | 0.32004 | 64.9 | 1.4 | 29 | 0.0113 | 0.28702 | 81.83 | 1.2 | 30 | 0.01 | 0.254 | 103.2 | 0.86 | 31 | 0.0089 | 0.22606 | 130.1 | 0.7 | 32 | 0.008 | 0.2032 | 164.1 | 0.53 | 33 | 0.0071 | 0.18034 | 206.9 | 0.43 | 34 | 0.0063 | 0.16002 | 260.9 | 0.33 | 35 | 0.0056 | 0.14224 | 329 | 0.27 | 36 | 0.005 | 0.127 | 414.8 | 0.21 | 37 | 0.0045 | 0.1143 | 523.1 | 0.17 | 38 | 0.004 | 0.1016 | 659.6 | 0.13 | 39 | 0.0035 | 0.0889 | 831.8 | 0.11 | 40 | 0.0031 | 0.07874 | 1049 | 0.09 |
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