what size cable do i need from battery to compressor in bed of 4 door truck? about 15 foot of cable is gonna be used i would say, is 4 guage good enough or do i need bigger. thanks
lol, did you snag that one off evil bay? (I wanted it but no $)
4 gauge at a minimum, or just get welding leads. (Cheaper)
1/0 for sure. You’re going to draw 160+ amps and will need a 175amp or 200amp fuse.
Dan can chime in for the recommended fuse size, but 15ft is too long for 4ga.
But you’re nowhere near maxing out 1/0 so feel free to get the cheap stuff or CCA.
For 15’ you should be able to use 1 gauge for the entire length on the ground side (never ground to chassis) and spliced into the 4 gauge on the power side about 6 to 12 inches from the compressor frame.
We recommend a 250 amp slow blow fuse because the surge or start current is about 250 amps for 1/4 of a second.