| 导体标称截面积 (mm2) | 导体种类 | 导体结构(根数/单丝直径mm) | 绝缘厚度规定值（mm） | 外形尺寸（mm） | 20℃时导体电阻最大值（Ω/km） | 70℃时绝缘电阻最小值（MΩ·km） | |||||
| 平均外径 | 下限 | 上限 | 铜芯 | 镀锡铜芯 | |||||||
| 1.5 | 1 | 1/1.38 | 0.7 | 2.78 | 2.6 | 3.2 | 12.1 | 12.2 | 0.011 | ||
| 1.5 | 2 | 7/0.52 | 0.7 | 2.96 | 2.7 | 3.3 | 12.1 | 12.2 | 0.010 | ||
| 2.5 | 1 | 1/1.78 | 0.8 | 3.38 | 3.2 | 3.9 | 7.41 | 7.56 | 0.010 | ||
| 2.5 | 2 | 7/0.68 | 0.8 | 3.64 | 3.3 | 4.0 | 7.41 | 7.56 | 0.009 | ||
| 4 | 1 | 1/2.25 | 0.8 | 3.85 | 3.6 | 4.4 | 4.61 | 4.70 | 0.0085 | ||
| 4 | 2 | 7/0.85 | 0.8 | 4.15 | 3.8 | 4.6 | 4.61 | 4.70 | 0.0077 | ||
| 6 | 1 | 1/2.76 | 0.8 | 4.36 | 4.1 | 5.0 | 3.08 | 3.11 | 0.0070 | ||
| 6 | 2 | 7/1.04 | 0.8 | 4.72 | 4.3 | 5.2 | 3.08 | 3.11 | 0.0065 | ||
| 10 | 1 | 1/3.57 | 1.0 | 5.57 | 5.3 | 6.4 | 1.83 | 1.84 | 0.0070 | ||
| 10 | 2 | 7/1.35 | 1.0 | 6.05 | 5.6 | 6.7 | 1.83 | 1.84 | 0.0065 | ||
| 16 | 2 | 7/1.70 | 1.0 | 7.10 | 6.4 | 7.8 | 1.15 | 1.16 | 0.0050 | ||
| 25 | 2 | 7/2.14 | 1.2 | 8.82 | 8.1 | 9.7 | 0.727 | 0.734 | 0.0050 | ||
| 35 | 2 | 7/2.52 | 1.2 | 9.96 | 9.0 | 10.9 | 0.524 | 0.529 | 0.0043 | ||
| 50 | 2 | 19/1.78 | 1.4 | 11.70 | 10.6 | 12.8 | 0.387 | 0.391 | 0.0043 | ||
| 70 | 2 | 19/2.14 | 1.4 | 13.50 | 12.1 | 14.6 | 0.268 | 0.270 | 0.0035 | ||
| 95 | 2 | 19/2.52 | 1.6 | 15.80 | 14.1 | 17.1 | 0.193 | 0.195 | 0.0035 | ||
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