导体结构参考：
| 导体截面 | 结构 | 异型线 | BV |
|---|---|---|---|
| 0.5 | / | / | / |
| 0.75 | / | / | / |
| 1 | / | / | / |
| 1.5 | 1/1.38 | / | / |
| 2.5 | 1/1.76 | / | / |
| 4 | 1/2.22 | / | / |
| 6 | 1/2.71 | / | / |
| 10 | 7/1.33 | / | / |
| 16 | 7/1.68 | / | / |
| 25 | 7/2.14 | 6 | 7/2.14 |
| 35 | 7/2.54 | 6 | 7/2.54 |
| 50 | 10/2.54 | 7 | 19/1.78 |
| 70 | 14/2.54 | 14 | 19/2.14 |
| 95 | 19/2.54 | 15 | 19/2.54 |
| 120 | 24/2.54 | 18 | 37/2.03 |
| 150 | 30/2.54 | 26 | 37/2.25 |
| 185 | 37/2.54 | 30 | 37/2.54 |
| 240 | 48/2.54 | 34 | 61/2.25 |
| 300 | 61/2.54 | 48 | 61/2.54 |
| 400 | 61/2.96 | 54 | 61/2.85 |
| 500 | 61/3.30 | / | / |
| 630 | / | / | / |