IEC 60228/BS 6360 Conductors for insulated cables
| Cross section mm2 | Nearest AWG size* | Stranding class 1 | Stranding class 2 | Resistance Ohm/km classes 1 & 2 | Stranding class 5 | Stranding class 6 | Resistance Ohm/km classes 5 & 6 | Approx weight kg/km |
| 0.14 | 26 | – | – | – | – | 18 x 0.10 | 138 | 1.35 |
| 0.25 | 24 | – | – | – | 14 x 0.16 | 32 x 0.10 | 79 | 2.4 |
| 0.34 | 22 | – | – | – | 19 x 0.16 | 42 x 0.10 | 57 | 3.3 |
| 0.50 | 20 | 1 x 0.80 | 7 x 0.30 | 36.0 | 16 x 0.21 | 28 x 0.16 | 38 | 4.8 |
| 0.75 | 18 | 1 x 0.97 | 7 x 0.37 | 24.5 | 24 x 0.21 | 42 x 0.16 | 26 | 7.2 |
| 1.0 | 18 | 1 x 1.13 | 7 x 0.43 | 18.1 | 32 x 0.21 | 56 x 0.16 | 19.5 | 9.6 |
| 1.5 | 16 | 1 x 1.38 | 7 x 0.53 | 12.1 | 30 x 0.26 | 84 x 0.16 | 13.3 | 14.4 |
| 2.5 | 14 | 1 x 1.78 | 7 x 0.67 | 7.41 | 50 x 0.26 | 140 x 0.16 | 7.98 | 24 |
| 4.0 | 12 | 1 x 2.26 | 7 x 0.85 | 4.61 | 56 x 0.31 | 224 x 0.16 | 4.95 | 38 |
| 6.0 | 10 | 1 x 2.76 | 7 x 1.04 | 3.08 | 84 x 0.31 | 192 x 0.21 | 3.3 | 58 |
| 10 | 8 | 1 x 3.57 | 7 x 1.35 | 1.83 | 80 x 0.41 | 320 x 0.21 | 1.91 | 96 |
| 16 | 6 | 1 x 4.5 | 7 x 1.70 | 1.15 | 128 x 0.41 | 512 x 0.21 | 1.21 | 154 |
| 25 | 4 | – | 7 x 2.14 | 0.72 | 200 x 0.41 | 800 x 0.21 | 0.78 | 240 |
| 35 | 2 | – | 7 x 2.52 | 0.52 | 280 x 0.41 | 1,120 x 0.21 | 0.55 | 336 |
| 50 | 1/0 | – | 19 x 1.78 | 0.39 | 400 x 0.41 | 705 x 0.31 | 0.39 | 480 |
| 70 | 2/0 | – | 19 x 2.14 | 0.27 | 356 x 0.51 | 990 x 0.31 | 0.27 | 672 |
| 95 | 3/0 | – | 19 x 2.52 | 0.19 | 485 x 0.51 | 1,340 x 0.31 | 0.21 | 912 |
| 120 | 250MCM | – | 37 x 2.03 | 0.15 | 614 x 0.51 | 1,690 x 0.31 | 0.16 | 1,152 |
| 150 | 300MCM | – | 37 x 2.25 | 0.12 | 765 x 0.51 | 2,123 x 0.31 | 0.13 | 1,440 |
| 185 | 400MCM | – | 37 x 2.52 | 0.1 | 944 x 0.51 | 1,470 x 0.41 | 0.11 | 1,776 |
| 240 | 500MCM | – | 61 x 2.25 | 0.07 | 1,225 x 0.51 | 1,905 x 0.41 | 0.08 | 2,304 |
| 300 | 600MCM | – | 61 x 2.52 | 0.06 | 1,530 x 0.51 | 2,385 x 0.41 | 0.064 | 2,880 |
| 400 | 750MCM | – | 61 x 2.85 | 0.05 | 2,035 x 0.51 | – | 0.068 | 3,840 |
| 500 | 1,000MCM | – | 61 x 3.20 | 0.04 | 1,768 x 0.60 | – | 0.0384 | 4,800 |
Notes: The number of strands according to IEC 60228/BS 6360 shown in classes 1 & 2 is obligatory. Stranding shown in classes 5 & 6 gives the maximum strand diameters and may have less strands provided the conductor does not exceed the resistance figures shown. In either case the standard gives the maximum resistance in ohms/km that is permissable for non-tinned conductors. * AWG sizes are approximate and for information only. Please contact us for exact sizing.
