AS/NZS 3000:2018

Table C6, C7

Simplified protective device selection for 1 to 25 mm² cables

The simplified selector reads the largest protective device rating Tables C6 and C7 allow for a conductor size. It reads one for each installation condition the tables separate, for circuits of one phase and of three.

已核验：对照印刷版标准阅读，页码 478–479。检查于 26 Sept 2026。

单位：Size mm2, Rating A

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。

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Table C6, C7, Simplified protective device selection for 1 to 25 mm² cables
Phases	Size (mm2)	In air unenclosed	Thermal insulation partial	Thermal insulation complete	In air enclosed	In ground enclosed
1	1	16	10	8	13	16
1	1.5	20	16	10	16	20
1	2.5	25	20	16	20	32
1	4	32	25	20	25	40
1	6	40	32	25	32	50
1	10	63	50	32	50	63
1	16	80	63	40	63	80
1	25	100	80	50	80	100
3	1	13	10	6	13	16
3	1.5	16	13	8	16	20
3	2.5	20	16	10	20	25
3	4	32	20	16	25	32
3	6	40	32	20	32	40
3	10	50	40	25	40	50
3	16	63	50	32	63	63
3	25	80	63	40	80	80

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简易选型器

电缆

保护

负荷

功率

太阳能

安全

接地

测试

消防

法规

Table C6, C7

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Phases	Size (mm2)	In air unenclosed	Thermal insulation partial	Thermal insulation complete	In air enclosed	In ground enclosed
1	1	16	10	8	13	16
1	1.5	20	16	10	16	20
1	2.5	25	20	16	20	32
1	4	32	25	20	25	40
1	6	40	32	25	32	50
1	10	63	50	32	50	63
1	16	80	63	40	63	80
1	25	100	80	50	80	100
3	1	13	10	6	13	16
3	1.5	16	13	8	16	20
3	2.5	20	16	10	20	25
3	4	32	20	16	25	32
3	6	40	32	20	32	40
3	10	50	40	25	40	50
3	16	63	50	32	63	63
3	25	80	63	40	80	80

Phases	Size (mm2)	In air unenclosed	Thermal insulation partial	Thermal insulation complete	In air enclosed	In ground enclosed
1	1	16	10	8	13	16
1	1.5	20	16	10	16	20
1	2.5	25	20	16	20	32
1	4	32	25	20	25	40
1	6	40	32	25	32	50
1	10	63	50	32	50	63
1	16	80	63	40	63	80
1	25	100	80	50	80	100
3	1	13	10	6	13	16
3	1.5	16	13	8	16	20
3	2.5	20	16	10	20	25
3	4	32	20	16	25	32
3	6	40	32	20	32	40
3	10	50	40	25	40	50
3	16	63	50	32	63	63
3	25	80	63	40	80	80

Phases	Size (mm2)	In air unenclosed	Thermal insulation partial	Thermal insulation complete	In air enclosed	In ground enclosed
1	1	16	10	8	13	16
1	1.5	20	16	10	16	20
1	2.5	25	20	16	20	32
1	4	32	25	20	25	40
1	6	40	32	25	32	50
1	10	63	50	32	50	63
1	16	80	63	40	63	80
1	25	100	80	50	80	100
3	1	13	10	6	13	16
3	1.5	16	13	8	16	20
3	2.5	20	16	10	20	25
3	4	32	20	16	25	32
3	6	40	32	20	32	40
3	10	50	40	25	40	50
3	16	63	50	32	63	63
3	25	80	63	40	80	80