Stranding Chart - IEC 60228/BS 6360 Conductors for insulated cables

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.

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