| Conductor Gauge | Conductor Diameter (mm) | Sectional Area (mm²) |
| AWG | Nominal Diameter | Minimum Diameter | Nominal Value | Minimum Value |
| 40 | 0.079 | 0.077 | 0.0049 | 0.0048 |
| 39 | 0.089 | 0.087 | 0.0062 | 0.0061 |
| 38 | 0.102 | 0.100 | 0.0081 | 0.0079 |
| 37 | 0.114 | 0.112 | 0.0103 | 0.0101 |
| 36 | 0.127 | 0.124 | 0.0127 | 0.0124 |
| 35 | 0.142 | 0.139 | 0.0159 | 0.0156 |
| 34 | 0.160 | 0.157 | 0.0200 | 0.0196 |
| 33 | 0.180 | 0.176 | 0.0255 | 0.0250 |
| 32 | 0.203 | 0.199 | 0.0324 | 0.0318 |
| 31 | 0.226 | 0.221 | 0.040 | 0.039 |
| 30 | 0.254 | 0.249 | 0.051 | 0.050 |
| 29 | 0.287 | 0.281 | 0.065 | 0.064 |
| 28 | 0.320 | 0.314 | 0.081 | 0.079 |
| 27 | 0.361 | 0.354 | 0.102 | 0.100 |
| 26 | 0.404 | 0.396 | 0.128 | 0.125 |
| 25 | 0.455 | 0.446 | 0.162 | 0.159 |
| 24 | 0.511 | 0.501 | 0.205 | 0.201 |
| 23 | 0.574 | 0.563 | 0.259 | 0.254 |
| 22 | 0.643 | 0.630 | 0.324 | 0.318 |
| 21 | 0.724 | 0.710 | 0.412 | 0.404 |
| 20 | 0.813 | 0.797 | 0.519 | 0.509 |
| 19 | 0.912 | 0.894 | 0.653 | 0.640 |
| 18 | 1.02 | 1.00 | 0.823 | 0.807 |
| 17 | 1.15 | 1.13 | 1.04 | 1.02 |
| 16 | 1.29 | 1.26 | 1.31 | 1.28 |
| 15 | 1.45 | 1.42 | 1.65 | 1.62 |
| 14 | 1.63 | 1.60 | 2.08 | 2.04 |
| 13 | 1.83 | 1.79 | 2.63 | 2.58 |
| 12 | 2.05 | 2.01 | 3.31 | 3.24 |
| 11 | 2.30 | 2.25 | 4.17 | 4.09 |
| 10 | 2.59 | 2.54 | 5.26 | 5.15 |
| 9 | 2.90 | 2.84 | 6.63 | 6.50 |
| 8 | 3.26 | 3.19 | 8.36 | 8.19 |
| 7 | 3.66 | 3.59 | 10.55 | 10.34 |
| 6 | 4.11 | 4.03 | 13.3 | 13.03 |
| 5 | 4.62 | 4.53 | 16.77 | 16.43 |
| 4 | 5.19 | 5.09 | 21.15 | 20.73 |
| 3 | 5.82 | 5.70 | 26.67 | 26.14 |
| 2 | 6.54 | 6.41 | 33.62 | 32.95 |
| 1 | 7.34 | 7.19 | 42.41 | 41.56 |