I have a follow-up question, which I believe is directly related to Maine Sail's post. Perhaps someone here can help.
Our boat has no fuses on primary battery cables, as was common in 1984, but I'd like to remedy the situation. I plan to install a negative busbar and a positive bus bar adjacent to the house bank, and use 1/0 cable for all the battery cables. If I protect the house bank between the POS bus and the house batteries with an MRBF fuse, do I need a fuse in the cable between the POS bus and the battery switch? The cable will be the same, 1/0. Since it's the same size wire, wouldn't the MRBF fuse at the battery protect it?
1984 Sabre 34 Mk I