Cable Sizing Chart


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Cable Sizing Chart

This chart indicates the sizes of cable required to carry a given amount of power over various distances.

Don't worry if this chart looks intimidating - contact us if you need our help.

12v Systems			Minimum cable size to keep voltage drop to less than about 5%% Cable length in metres.
Watts up to :	Current up to:	Absolute Minimum	3m	*10m*	*30m*	*100m*

36 W	3A	0.5	0.75	2.5	6	25
72 W	6A	0.75	1.5	4	10	35
120 W	10A	1	2.5	6	16	50
192 W	16A	1.5	2.5	10	25	--
288 W	24A	2.5	4	16	35	--
384 W	32A	4	6	16	50	--
480 W	40A	6	6	25	50	--



24v Systems			Minimum cable size to keep voltage drop to less than about 5% Cable length in metres.
Watts up to :	Current up to:	Absolute Minimum	3m	*10m*	*30m*	*100m*

72 W	3A	0.5	0.5	0.75	2.5	10
144 W	6A	0.75	0.75	1.5	4	16
240 W	10A	1	1	2.5	10	25
384 W	16A	1.5	1.5	4	16	50
576 W	24A	2.5	2.5	6	25	--
768 W	32A	4	4	10	25	--
960 W	40A	6	6	10	35	--

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