I'd rather be sailing
We're replacing our Xantrex Freedom 15 inverter/charger with a Freedom 25 in order to increase charging capacity for our new battery bank. We current have 1/0 cables, and the recommendation is to go to 2/0. Our charger goes to a bus bar which also has the alternator hooked to it, and then goes to our batteries (this is a VERY simplified description). The batteries are also connected via 1/0. Do I need to upgrade EVERYTHING to 2/0?