Quote:
Originally Posted by V
have you confirmed that much voltage drop at the battery currently? For some reason i can't believe there is that much loss. that would imply the taillights on any car will have a substantial drop as well due to being a thinner wire, therefore more resistance. Yet a voltmeter shows only like .2-.3 volt drop, not 1.5+. I could be wrong though, but i say just use a volt meter and confirm what you're charging voltage at the rear battery is with the 4 awg. If you do see under 13.2v, then id suggest going to a bigger gauge wire.
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Thats just laws of electricity, so with a 200amp load, and that voltage/length/gauge, tis the calculated drop. Taillights don't draw that heavy
Is that all the time? No, but I stand to reason that with all electrical load on, with a hot idle, the 4 gauge is allowing a significant voltage drop. The "feed" for the loads is a 1 gauge so might as well have the battery charge "feed" be the same, at least in my twisted mind.