headless
10+ year member
CarAudio.com Elite
eh...4ga is fine for ~100a-120 in 20 foot runs, though you'll lose some voltage at that power draw.... As you can imagine, a run of 3 foot of 4ga is fine for way over 1600w @ 12v...I think you'd only lose about 0.3v in 3 foot of 4ga pulling ~200 amps, being conservative.