We had a project we were working on that is basically a UPS. A lithium battery is supplying current to whatever load we want. My question is we are drawing 100A through the wiring. I wanted to save money and use the smallest gauge of wire but on an automotive wire site it's telling me 12 AWG is sufficient, but googling for awg sheet I see that gauge 4 (doubled) up would be a better fit. Am I reading the charts wrong or what is the deal? Am I maybe looking at a chart that is comparing current in small doses rather than constant? My wire is not that long, maybe 3'. I havn't bought the 4 gauge wire yet, but 10Amp wire (and I'm bad I know) gets really toasty at that load. Thanks [EDITED*]My voltage range is like a standard car battery from 10-14.5(overcharged) so in reality 13.8 would be a better value
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