ISO 导体规格
mm2
20℃单位长度最大电阻
裸铜 镀锡铜 镀镍铜
0.13 136 140 142
0.22 84.8 86.5 87.9
0.35 54.4 55.5 56.8
0.5 37.1 38.2 38.6
0.75 24.7 25.4 25.7
1 18.5 19.1 19.3
1.25 14.9 15.9 16
1.5 1
2.7 13 1
3.2
2 9.42 9.69 9.82
2.5 7.6 7.82 7.92
3 6.15 6.36 6.41
4 4.71 4.8
5 4.91
5 3.94 4.02 4.11
6 3.14 3.23 3.27
8 2.38 2.52 2.6
10 1.82 1.85 1.9
12 1.52 1.6 1.66
16 1.16 1.18 1.21
20 0.955 0.999 1.03
25 0.743 0.757 0.774
30 0.647 0.684 0.706
35 0.527 0.538 0.549
40 0.473 0.5 0.516
50 0.368 0.375 0.383
60 0.315 0.333 0.344
70 0.259 0.264 0.27
95 0.196 0.2 0.204
120 0.153 0.156 0.159
导体电阻温度系数校正表
实时温度（℃）校正系数实时温度（℃）校正系数
0 1.087210.996
1 1.082220.992
2 1.078230.988
3 1.073240.984
4 1.068250.980
5 1.064260.977
6 1.059270.973
7 1.055280.969
8 1.050290.965
9 1.046300.962
10 1.042310.958
11 1.037320.954
12 1.033330.951
13 1.029340.947
14 1.025350.943
15 1.020360.940
16 1.016370.936
17 1.012380.933
18 1.008390.929
19 1.004400.926
20 1.000