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Group rating factors single core cables Group rating factors for single core cables in trefoil single way ducts, horizontal formation (average value)


	Spacing
	Number Of Circuits	Touching	0.45m	0.60m
3.6/6 to 12/20kV Cables	2	0.85	0.88	0.90
	3	0.75	0.80	0.83
	4	0.70	0.76	0.80
	5	0.67	0.73	0.77
	6	0.64	0.71	0.76
18/30kV cables	2	0.85	0.88	0.90
	3	0.76	0.80	0.83
	4	0.71	0.76	0.80
	5	0.67	0.73	0.77
	6	0.65	0.71	0.76