Originally Posted by
MLA
Brett,
The one question is what is the ACC rated for in terms of amps. This will determine the wire gauge for the most part. I would consider doubling the amp draw in anticipation of two ACC sockets being in use as once. Add 3A for the USB too.
Now, if i was installing multiple ports around a boat, I would likely divide them to a port side circuit and STBD side circuit. Daisy-chain from the furthest from the helm too the closest, then finish the runs to the helm. I would use a standard 2-conductor, like speaker wire, of the proper gauge. Once at the helm, I would terminate the circuits with its own circuit breaker of proper amperage on the B+ off the helm B+ supply and B- to the helm ground supply.