What fuse to use....

[chxen1 10+ year member]

Hello i have a 4 channel amp and a mono amp and together they need 125amps. Right now i'm running a 80 amp fuse next to the battery on 4 guage power cord. oviously the amps are not getting enough current because every time i turn the music loud the fuse doesn't break but it over heats i guess and my sytem shuts down, then i take the fuse out put it back in and it works, my questions is should i put a 125 amp fuse???? Also what is the max my car can handle on a stock altenator and battery, it's a sunfire gt , i think the max is 120- 125 but i don't know... thanks

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[funkyab 10+ year member]

start with big 3 and 1/0 cable.

 

[loopkiller 10+ year member]

Your 4 awg should be good up to 125A, but you would be much better off with 1/0 fused to 250A to a distro then out 4 awg fused to 125A to the amps.

 

[Buck 5,000+ posts]

Your 4 awg should be good up to 125A, but you would be much better off with 1/0 fused to 250A to a distro then out 4 awg fused to 125A to the amps.

I agree. This is how mine is ran. I have 1/0 to the back, fused at 300A. Then at a distribution block it splits into 2 4 gauge wires. One is fused at 50A, and the other at 120A.

 

[SPL Blazer 10+ year member]

Not sure if anyone sells a 125A fuse, but you should should be able to get away with a 150 amp fuse. Like the others said, do your big 3 upgrade.

 

[loopkiller 10+ year member]

 

[SPL Blazer 10+ year member]

Cool, never saw one in that rating before.

 

[chxen1 10+ year member]

So just to confirm i don't want to spend money on a wire just yet so if i leave the 4 gauge for now would you guys recomend putting 125amp fuse or 150...?

 

[loopkiller 10+ year member]

So just to confirm i don't want to spend money on a wire just yet so if i leave the 4 gauge for now would you guys recomend putting 125amp fuse or 150...?

Wire Gauge Recommended - Maximum Fuse Size

00 awg - 400 amps

0 awg - 325 amps

1 awg - 250 amps

2 awg - 200 amps

4 awg - 125 amps

6 awg - 80 amps

8 awg - 50 amps

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