I'm installing a pair of Quattro 48/5000 inverters. They'll be approximately 10' (3m) from my batteries. The owners manual discusses wire sizes but I'm not sure if that's total circuit length (positive + negative) or each individual wire (positive OR negative).
If I'm at a total of 20' (positive + negative), then I need 2 x 70mm.
But if I'm at individual wires at 10', then I just need 1 x 70mm.