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.

Kua manatokotia: pānuitia ki te paerewa tā, whārangi 478–479. I tirohia 26 Sept 2026.

Ngā unit: Size mm2, Rating A

Ko ēnei ngā uara e tuhia ana e AmpSize. Kāore he kupu o te paerewa e tuhia ana. Whakamanahia ki te paerewa o nāianei.

Hoki ki tana kāri i te whārangi AS/NZS 3000:2018

Kimihia tētahi rārangi

16 rārangi

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

Ngā taputapu e pānui ana i tērā (1)

Kaiwhiri Māmā

Ngā taura

Te tiaki

Ngā utanga

Power

Solar

Haumaru

Whenua

Whakamātautau

Ahi

Ture

Table C6, C7

Ngā taputapu e pānui ana i tērā (1)

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