| 导体标称截面积mm2 | 绝缘厚度规定值mm | 平均外径mm | 20℃时导体电阻最大值 Ω/km |
70℃时绝缘电阻 最小值MΩ·km |
||
| 下限 | 上限 | 铜芯 | 镀锡铜芯 | |||
| 1.5 | 0.7 | 2.8 | 3.4 | 13.3 | 13.7 | 0.011 |
| 2.5 | 0.8 | 3.4 | 4.1 | 7.98 | 8.21 | 0.010 |
| 4 | 0.8 | 3.9 | 4.8 | 4.95 | 5.09 | 0.0085 |
| 6 | 0.8 | 4.4 | 5.3 | 3.30 | 3.39 | 0.0070 |
| 10 | 1.0 | 5.7 | 6.8 | 1.91 | 1.95 | 0.0070 |
| 16 | 1.0 | 6.7 | 8.1 | 1.21 | 1.24 | 0.0050 |
| 25 | 1.2 | 8.4 | 10.2 | 0.780 | 0.795 | 0.0050 |
| 35 | 1.2 | 9.7 | 11.7 | 0.554 | 0.565 | 0.0043 |
| 50 | 1.4 | 11.5 | 13.9 | 0.386 | 0.393 | 0.0043 |
| 70 | 1.4 | 13.2 | 16.0 | 0.272 | 0.277 | 0.0032 |
| 95 | 1.6 | 15.1 | 18.2 | 0.206 | 0.210 | 0.0032 |
| 120 | 1.6 | 16.7 | 20.2 | 0.161 | 0.164 | 0.0029 |
| 150 | 1.8 | 18.6 | 22.5 | 0.129 | 0.132 | 0.0029 |
| 185 | 2.0 | 20.6 | 24.9 | 0.106 | 0.108 | 0.0029 |
| 240 | 2.4 | 23.5 | 28.4 | 0.0801 | 0.0817 | 0.0028 |
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