AS/NZS 3000:2018
Table 3.5
Underground wiring system categories by cable type and method of protection
The underground cable tool reads the wiring system category for the cable type and its protection. The category sets the depth of cover.
已核验：对照印刷版标准阅读，页码 195。检查于 26 Sept 2026。
单位：Category A, B, C or NP
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。
7 行
| Cable | Heavy duty conduit | Medium duty encased | Heavy duty fibre cement | Fibre cement encased | Galvanized pipe | Medium duty flexible | Buried direct | Chased in rock |
|---|---|---|---|---|---|---|---|---|
| insulated-unsheathed | A | A | NP | NP | NP | B | NP | NP |
| insulated-sheathed | A | A | A | A | A | B | B | NP |
| armoured-served | A | A | A | A | A | A | A | C |
| neutral-screened-underground | A | A | A | A | A | A | A | NP |
| neutral-screened | A | A | A | A | A | B | B | NP |
| mims-served | A | A | A | A | A | B | B | C |
| al-sheathed-strip-armoured | A | A | A | A | A | B | B | C |