Gauge chart wire run wiring kit depends reference future fine really need long use Wire dc size circuit blue sea systems abyc choosing correct part selection enlarge below click 12 volt current and maximum wire length
Part 1: Choosing the Correct Wire Size for a DC Circuit - Blue Sea Systems
Wire volt length chart maximum current cable loss voltage drop awg copper system electric distance type Part 1: choosing the correct wire size for a dc circuit 4 gauge or 8 gauge wiring kit? : r/carav
12 Volt Current and Maximum Wire Length
4 gauge or 8 gauge wiring kit? : r/CarAV
Part 1: Choosing the Correct Wire Size for a DC Circuit - Blue Sea Systems