Using a busbar in a 12V electrical setup has several important benefits: 1. Clean and Organised Wiring Without a busbar, you'd have to stack multiple ring terminals onto one battery post or fuse block. 1973 construction house, all but one of the circuits are bonded via armored cable sheath only, not real copper grounding conductors. ONE Romex circuit - the only one I saw in the house - is fed from this sub panel. A bus bar gives a single source for either negative or positive electrons, saving cable, and allows you to tap the bar for the potential to run multiple devices such as Shunts, Charge Controllers, Inverters, Monitors, etc. Catch, make or grow everything you can. It acts as a central point where multiple circuits can connect, enabling the organised and efficient flow of current within a DC system. Should I bother running two new grounding wires to.
[PDF Version]