TABLE OF CONTENTS When working on international projects, the information shown in the following table will come in handy. Most of the world expresses wire size in terms of its diameter, while in North America, American Wire Gauge (AWG) is most common unit. AWG is shown below with its exact equivalent value in mm 2 and diameter (mm).
| AWG number | Cross section (mm 2) | Diameter (mm) | Conductor resistance ( ?/km) |
|---|---|---|---|
| 1000 MCM [*] | 507 | 29.3 | 0.036 |
| 900 | 456 | 27.8 | 0.04 |
| 750 | 380 | 25.4 | 0.048 |
| 600 | 304 | 22.7 | 0.061 |
| 550 | 279 | 21.7 | 0.066 |
| 500 | 253 | 20.7 | 0.07 |
| 450 | 228 | 19.6 | 0.08 |
| 400 | 203 | 18.5 | 0.09 |
| 350 | 177 | 17.3 | 0.10 |
| 300 | 152 | 16.0 | 0.12 |
| 250 | 127 | 14.6 | 0.14 |
| 4/0 | 107.2 | 11.68 | 0.18 |
| 3/0 | 85.0 | 10.40 | 0.23 |
| 2/0 | 67.4 | 9.27 | 0.29 |
| 0 | 53.4 | 8.25 | 0.37 |
| 1 | 42.4 | 7.35 | 0.47 |
| 2 | 33.6 | 6.54 | 0.57 |
| 3 | 26.7 | 5.83 | 0.71 |
| 4 | 21.2 | 5.19 | 0.91 |
| 5 | 16.8 | 4.62 | 1.12 |
| 6 | 13.3 | 4.11 | 1.44 |
| 7 | 10.6 | 3.67 | 1.78 |
| 8 | 8.34 | 3.26 | 2.36 |
| 9 | 6.62 | 2.91 | 2.77 |
| 10 | 5.26 | 2.59 | 3.64 |
| 11 | 4.15 | 2.30 | 4.44 |
| 12 | 3.31 | 2.05 | 5.41 |
| 13 | 2.63 | 1.83 | 7.02 |
| 14 | 2.08 | 1.63 | 8.79 |
| 15 | 1.65 | 1.45 | 11.2 |
| 16 | 1.31 | 1.29 | 14.7 |
| 17 | 1.04 | 1.15 | 17.8 |
| 18 | 0.8230 | 1.0240 | 23.0 |
| 19 | 0.6530 | 0.9120 | 28.3 |
| 20 | 0.5190 | 0.8120 | 34.5 |
| 21 | 0.4120 | 0.7230 | 44.0 |
| 22 | 0.3240 | 0.6440 | 54.8 |
| 23 | 0.2590 | 0.5730 | 70.1 |
| 24 | 0.2050 | 0.5110 | 89.2 |
| 25 | 0.1630 | 0.4550 | 111.0 |
| 26 | 0.1280 | 0.4050 | 146.0 |
| 27 | 0.1020 | 0.3610 | 176.0 |
| 28 | 0.0804 | 0.3210 |
