AS/NZS 3008.1.2:2017

Table 7

Current ratings, single‑core cable, three cables per circuit, thermoplastic 75 °C

The cable size tool reads the printed rating here for single‑core thermoplastic cable on a three‑phase circuit, in copper or aluminium, for each installation method.

Verified: read against the printed standard, pages 44–46. Checked 24 Sept 2026.

Units: Rating A

These are the values AmpSize encodes. No text of the standard is reproduced. Verify against the current standard.

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20 rows

Table 7, Current ratings, single-core cable, three cables per circuit, thermoplastic 75 °C
Size	Cu spaced apart	Cu spaced from surface	Cu touching	Cu sun	Cu enclosed air	Cu insulation partial	Cu insulation complete	Cu buried direct	Cu underground one enclosure	Cu underground separate enclosures	Al spaced apart	Al spaced from surface	Al touching	Al sun	Al enclosed air	Al insulation partial	Al insulation complete	Al buried direct	Al underground one enclosure	Al underground separate enclosures
1	18	16	15	9	14	11	7	18	18	21	—	—	—	—	—	—	—	—	—	—
1.5	23	19	18	11	17	14	9	22	22	26	—	—	—	—	—	—	—	—	—	—
2.5	33	29	26	15	24	19	14	30	30	36	—	—	—	—	—	—	—	—	—	—
4	43	38	35	21	32	26	18	40	40	47	—	—	—	—	—	—	—	—	—	—
6	56	48	46	25	40	32	23	50	50	58	—	—	—	—	—	—	—	—	—	—
10	76	66	62	34	54	42	31	65	65	77	—	—	—	—	—	—	—	—	—	—
16	101	88	82	44	71	57	41	114	86	99	79	67	64	34	55	44	32	89	66	77
25	137	117	111	57	92	73	55	147	110	129	106	91	86	44	72	57	43	114	86	100
35	169	145	136	70	114	91	67	176	134	154	131	112	105	54	89	71	52	136	103	119
50	206	178	166	82	136	108	—	209	158	185	161	138	129	64	105	84	—	162	123	144
70	262	225	210	101	173	139	—	256	198	226	204	174	163	79	135	107	—	199	154	175
95	327	280	262	122	209	168	—	307	239	275	253	218	203	95	162	130	—	238	185	213
120	382	327	304	139	247	197	—	349	277	311	296	254	237	108	193	154	—	272	216	242
150	439	376	351	156	278	222	—	392	311	349	340	292	272	121	217	173	—	304	242	271
185	510	437	407	176	324	259	—	442	358	402	396	341	317	137	253	202	—	344	278	312
240	610	521	486	201	377	302	—	512	415	464	475	408	381	157	307	236	—	400	325	362
300	707	603	561	225	442	355	—	576	477	537	551	473	441	177	348	278	—	453	375	418
400	828	701	653	250	504	402	—	652	541	608	650	556	519	200	400	320	—	518	430	477
500	964	809	754	276	596	477	—	735	628	705	763	651	606	223	480	384	—	591	505	558
630	1129	931	866	302	670	537	—	823	703	795	899	762	709	250	548	439	—	673	575	636

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Table 7

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