Big three fuse

[xNaStYx 10+ year member]

Is a fuse necessary between the battery positive and alt? If so, what size fuse is the best?

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[shizzzon 10+ year member]

if that wire ever grounds out from a crash.... u better pray that a fire doesnt occur if you do not fuse.

 

[Odd-io 10+ year member]

Fuse with a higher rating than that of the alt. Just in case.

 

[xNaStYx 10+ year member]

if the wire is capable of 250A, then is a 250A fuse good?

 

[Ct Drummer]

If a fuse should be inline with the cable, then why don't the automakers fuse the cable that they install? It's not as if you'll be pushing any more current than the alternator can put out through the small cable that they built the car with.

If you had an accident, and the fused cable protected itself, the OEM cable could still ground out, and fry something.

It doesn't really make any sense to me to spend the time and money on something that may, or may not be of any help.

But hey, it's only my opinion.

Mike

 

[thegreatestpenn 5,000+ posts]

fuse according to the amps the alt puts out, or it'll fry. if the fuse is too big, then the alt isn't protected at all by the fuse and might as well not have a fuse at all

 

[Sir Swish 10+ year member]

Worst thing is being stuck stranded because you were bumping and a fuse popped.