Quote Originally Posted by hobowh View Post
10ga wire will handle 100 amps on a 10' run with 12v DC between 10' and 20' it drops to 50 amps if I remember my scales correctly

edit:at up to 300 watts usage
Plenty of wire gauge charts on the net. one down on this page, doesn't really cover the length though, just says increase size with distance. http://www.rowand.net/Shop/Tech/WireCapacityChart.htm