Quote:
Originally Posted by Moabdude
I have my Optima battery in the trunk. I have one thick wire from the alternator (100amp) directly to my battery. Do I fuse the battery at 100amps?
Seems logical but I am not sure.
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No need to fuse the alt to battery - the alt already has a built in regulator. It'll never put a 100 amps into the battery - the battery wouldn't allow that. Batteries really charge on VOLTAGE not really amperage and the regulator in the alt is voltage based.... so you're good.
A circuit breaker or fusible link from the battery to the STARTER isn't a bad idea - although you rarely see anyone do that.
Some wiring harnesses are shipped with fusible links in the ALT to Battery connection but most of those run thru the "fuse box"....