AS/NZS 3000:2018
Table 5.1, 铜
Minimum earthing conductor size by active conductor size
The loop impedance and cable size tools read the smallest earthing conductor for the active conductor size. The earth size feeds straight back into the loop impedance sum.
已核验：对照印刷版标准阅读，页码 278–279。检查于 27 Sept 2026。
单位：Active mm², Earth mm²
这些是 AmpSize 所编码的数值。不转载标准原文。请依据现行标准核对。
20 行
| Active (mm²) | Earth (mm²) |
|---|---|
| 1 | 1 |
| 1.5 | 1.5 |
| 2.5 | 2.5 |
| 4 | 2.5 |
| 6 | 2.5 |
| 10 | 4 |
| 16 | 6 |
| 25 | 6 |
| 35 | 10 |
| 50 | 16 |
| 70 | 25 |
| 95 | 25 |
| 120 | 35 |
| 150 | 50 |
| 185 | 70 |
| 240 | 95 |
| 300 | 120 |
| 400 | 120 |
| 500 | 120 |
| 630 | 120 |
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