in liine fuse needed?

[phemps 10+ year member]

Im gonna do the big three upgrade on my car soon and my battery is in my trunk so i have a long run of wire from the alt to the battery. should i fuse this wire? and if so whats the minimum amp fuse i should go with?

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[old49er 10+ year member]

Yes what size wire you running

 

[AlterEgo99 5,000+ posts]

Im gonna do the big three upgrade on my car soon and my battery is in my trunk so i have a long run of wire from the alt to the battery. should i fuse this wire? and if so whats the minimum amp fuse i should go with?

Yes. Wire size? Alternator amp rating?

 

[phemps 10+ year member]

im gonna be using 0 guage for the big three. at the moment i m onyly using 4 guage for my amp but i plan on going to a bigger amp in the future so that will be 0 eventually too. and my alt is still stock and im not sure what its rated to do ive never checked. but has anyone ever used a a normal circuit breaker in a car? i know stinger makes ones

 

[AlterEgo99 5,000+ posts]

At present my '08 Silverado has 4 gauge wire running from my stock 140 Amp alternator to a 175 Amp fuse, then on to the battery. The wire size typically determines the size of the fuse/breaker. I'd say at least 150 Amps.