Wire runs are so short and peak current is so brief that it effectively doesn't matter. Most folks run 14AWG between the battery and the power distribution boa

Wire runs are so short and peak current is so brief that it effectively doesn't matter. Most folks run 14AWG between the battery and the power distribution board. PDBs are generally made with 2oz copper and wide traces to accommodate the current, from there, the total current load is divided by 4, assuming that's how many motors or running.