WIRE GAUGE SELECTION TABLE

Alright, here's the deal. I have put all of my info in order to get the right size wire to do the job here. You can decide by power, by load, by application, whatever. This should get you pointed in the right direction. This section is by load.

WIRE GAUGE SELECTION TABLE

Amps		Watts		Wire gauge (for length in feet)
6V	12V	6V	12V	3	5	7	10	15	20	25
0 to 2.5	0 to 5	15	30	18	18	18	18	18	18	18
3.0	6	18	36	18	18	18	18	18	18	16
3.5	7	21	42	18	18	18	18	18	18	16
4.0	8	24	48	18	18	18	18	18	16	16
5.0	10	30	60	18	18	18	18	16	16	16
5.5	11	33	66	18	18	18	18	16	16	14
6.0	12	36	72	18	18	18	18	16	16	14
7.5	15	45	90	18	18	18	18	14	14	12
9.0	18	54	108	18	18	16	16	14	14	12
10	20	60	120	18	18	16	16	14	12	10
11	22	66	132	18	18	16	16	12	12	10
12	24	72	144	18	18	16	16	12	12	10
15	30	90	180	18	16	16	14	10	10	10
20	40	120	240	18	16	14	12	10	10	8
25	50	150	300	16	14	12	12	10	10	8
50	100	300	600	12	12	10	10	6	6	4
75	150	450	900	10	10	8	8	4	4	2
100	200	600	1200	10	8	8	6	4	4	2

Wire Gauge Selection Adjustments

(1) For very long cables ( for example: 20 foot long battery cables to relocate your battery ) go one size larger.

(2) You can probably get by using a size or maybe even 2 sizes smaller than the chart recommends. The factory makes the cables as small as possible but can still get the job done. Copper is expensive... the manufacturer saves a few bucks on millions of cars... pretty soon it adds up to real money. Using cable larger than the factory cable they will work better for you than the original.