AS/NZS 3008.1.2:2017
Table 52
Values of constant K for determination of permissible short-circuit currents
This table gives one flat k factor per material and insulation. The cable size and fault rating tools read Table 52 from the short-circuit limits table instead. There, the k factor depends on the temperature limits Tables 53 and 55 set.
已核验：对照印刷版标准阅读，页码 121–122。检查于 19 Sept 2026。
单位：K A·s^0.5/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。
4 行
| Material | Insulation | Initial temp C | Final temp C | K (A·s^0.5/mm2) |
|---|---|---|---|---|
| Cu | PVC | 75 | 160 | 111 |
| Cu | XLPE | 90 | 250 | 143 |
| Al | PVC | 75 | 160 | 73.6 |
| Al | XLPE | 90 | 250 | 94.5 |