What size fuse do I use to connect my power to my car battery?

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darkSSide
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I keep on getting conflicting advice so I thought I ask.

I have 2 amps one takes 2x70 amp fuses and the other takes 2x25 amp fuses. I am currently running 4 gauge wire but will upgrade to 0 gauge.

So do I add up the fuses and use a 200 amp fuse?

Thanx any help is appreciated.

 
Could I use a 125 a on the 2x70a?
you could use a 200a on the 2x70a if you wanted to. It's not recommended but it's your setup. The fusing on the amp protects the amp. It does nothing for the wire that supplies it the power. That's why you fuse for the wire so if it pulls too much current through it, it'll pop the fuse instead of popping a fire in your car.

If you're using 4 gauge OFC, use a 150a fuse

if it's CCA, 100a fuse

 
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darkSSide

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