Copper Round Hard Wire

Copper Round Hard Wire BS 4109 / 1970

TABLE 1. PLAIN AND HARD DRAWN COPPER WIRE

1 2 3 4 5 6 7 8 9 10
Diameter Difference between max. & min. measurements not to exceed Area Std. resistance at 20°C Max. resistance at 20°C Mass
std. max. min. plain tinned plain tinned
mm mm mm mm mm2 /km /km /km /km kg/km
0.056 0.058 0.054 0.002 463 7 215 7 323 7 760 7 876 .02190
0.063 0.065 0.061 0.003 117 5 701 5 787 6 081 6 172 0.027 71
0.071 0.073 0.069 0.003 959 4 489 4 556 4 753 4 824 0.035 20
0.080 0.082 0.078 0.005 027 3 535 3 588 3 719 3 775 0.044 69
0.090 0.092 0.088 0.006 362 2 793 2 835 2 922 2 966 0.056 56
0.100 0.102 0.098 0.007 854 2 263 2 297 2 356 2 391 0.069 82
0.112 0.114 0.110 0.009 852 1 804 1 831 1 870 1 898 0.087 58
0.125 0.127 0.123 0.012 27 1 448 1 470 1 496 1 518 0.109 1
0.140 0.144 0.136 0.015 39 1 155 1 172 1 223 1 241 0.136 8
0.160 0.164 0.156 0.020 11 883.6 896.8 929.8 943.7 0.178 7
0.180 0.184 0.176 0.025 45 698.2 708.7 730.4 741.4 0.226 3
0.200 0.204 0.196 0.031 42 565.6 574.1 589.0 597.8 0.279 3
0.224 0.228 0.220 0.039 41 450.9 457.7 467.5 474.5 0.350 4
0.250 0.254 0.246 0.049 09 362.0 367.4 373.9 379.5 0.436 4
0.280 0.284 0.276 0.061 58 288.6 292.9 292.9 301.5 0.547 4
0.315 0.319 0.311 0.004 0.077 93 228.0 231.4 233.9 237.4 0.692 8
0.355 0.359 0.351 0.004 0.098 98 179.5 182.2 183.7 186.5 0.879 9
0.400 0.404 0.396 0.004 0.125 7 141.4 143.5 144.2 146.4 1.117
0.450 0.454 0.446 0.005 0.159 0 111.8 113.5 113.8 115.5 1.414
0.500 0.505 0.495 0.005 0.196 4 90.48 91.84 92.36 93.75 1.746
0.560 0.566 0.554 0.006 0.246 3 72.15 73.23 73.72 74.83 2.190

TABLE 2. PLAIN AND HARD DRAWN COPPER WIRE – continued

1 2 3 4 5 6 7 8 9 10
Diameter Difference between max. & min. measurements not to exceed Area Std. resistance at 20°C Max. resistance at 20°C Mass
std. max. min. plain tinned plain tinned
mm mm mm mm mm2 /km /km /km /km kg/km
0.630 0.636 0.624 0.006 0.3117 57.01 57.87 58.11 58.93 2.771
0.710 0.717 0.703 0.007 0.3959 44.89 45.56 45.78 46.47 3.520
0.800 0.808 0.792 0.008 0.5027 35.35 35.88 36.07 36.61 4.469
0.900 0.909 0.891 0.009 0.6353 27.93 28.35 28.5 28.93 5.656
1.00 1.010 0.990 0.010 0.7854 22.63 22.96 23.09 23.44 6.982
1.12 1.131 1.109 0.011 0.9852 18.04 18.13 18.4 18.49 8.758
1.25 1.263 1.237 0.013 1.227 14.48 14.55 14.79 14.86 10.91
1.40 1.414 1.386 0.014 1.539 11.54 11.60 11.78 11.84 13.68
1.60 1.616 1.584 0.016 2.011 8.836 8.880 9.016 9.061 17.88
1.80 1.818 1.782 0.018 2.545 6.982 7.017 7.125 7.161 22.62
2.00 2.020 1.980 0.020 3.142 5.656 5.684 5.771 5.800 27.93
2.24 2.262 2.218 0.022 3.941 4.509 4.532 4.604 4.627 33.04
2.50 2.525 2.475 0.025 4.909 3.620 3.638 3.694 3.694 43.64
2.80 2.828 2.772 0.028 6.158 2.886 2.900 2.944 2.958 54.72
3.15 3.181 3.118 0.032 7.793 2.280 2.291 2.327 2.339 69.28
3.55 3.585 3.515 0.036 9.898 1.795 1.804 1.831 1.840 87.99
4.00 4.040 3.960 0.040 12.57 1.414 1.421 1.442 1.449 111.7
4.50 4.550 4.450 0.050 15.9 1.118 1.124 1.143 1.149 141.4
5.00 5.050 4.950 0.050 19.64 0.9048 0.9093 0.9236 0.9282 174.6
5.60 5.650 5.550 0.050 24.63 0.7215 0.7251 0.7346 0.7383 219.0

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