Need an Adult. Alternator Wiring Question. Non-OEM System

Just a point to consider.

A fuse, any fuse, an system, for any purpose is designed to protect the wiring from melting. That is all it is there to do.

The size of the fuse should be based on the wire you are trying to protect,

Also wire has a temperature rating, so you need to buy wire that will work at the expected temps. In other words a wire that can handle 100 amps at 75 deg ambient air temp might only be able to handle 75 amps at 100 deg. (Numbers for example only I pulled them out of my butt.)


Also there are slow blow fuses and circuit breakers, that can handle more amps then rated for a short period of time like while cranking.