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Current Carrying Capacity Multi Core Cables -BS 7211

CONDUCTOR	REFERENCE METHOD 4		REFERENCE METHOD 3		REFERENCE METHOD 1		REFERENCE METHOD 11 OR 13
CROSS SECTIONAL	enclosed in conduit in		enclosed in conduit on a		clipped direct		on a perforated cable tray
AREA	thermally insulating wall etc		wall or in trunking etc				OR Free AIR


	one	one	one	one	one	one	one	one
	2 core cable	3 or 4 core	2 core cables	3 or 4 core	2 core cable	3 or 4 core	2 core cable	3 or 4 core
	single phase	cable three	single phase	cable three	single phase	cable three	single phase	cable three
	a.c or d.c	phase a.c	a.c or d.c	phase a.c	a.c or d.c	phase a.c	a.c or d.c	phase a.c


mm2	A	A	A	A	A	A	A	A
1	14.5	13	17	15	19	17	21	18
1.5	18.5	16.5	22	19.5	24	22	26	23
2.5	25	22	30	26	33	30	36	32
4	33	30	40	35	45	40	49	42
6	42	38	51	44	58	52	63	54
10	57	51	69	60	80	71	86	75
16	76	68	91	80	107	96	115	100
25	99	89	119	105	138	119	149	127
35	121	109	146	128	171	147	185	158
50	145	130	175	154	209	179	225	192
70	183	164	221	194	269	229	289	246
95	220	197	265	233	328	278	352	298
120	253	227	305	268	382	322	410	346
150	290	259	334	300	441	371	473	399
185	329	295	384	340	506	424	542	456
240	386	347	459	398	599	500	641	538
300	442	396	532	455	693	576	741	621
400	-	-	625	536	803	667	865	741

REFERENCE METHODS OF INSTALLATION ARE DESCRIBED IN IEEE REGULATIONS & B.S. 7671

THESE ARE ALSO APPLICABLE TO CABLES WITH/WITHOUT CIRCUIT PROTECTIVE CONDUCTOR.