what size inline fuse 1/0 gauge zx1000.1 zx450.2?

[gsr22 10+ year member]

hey i am trying to figure out what size anl fuse for the inline next to the battery.

wiring knu klm 1/0

sub amp zx1000.1

comp amp zx450.2

distro to 4ga

thanks in advance

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[Rawr-DQ 10+ year member]

How long is the run of the 1/0 gauge?

 

[gsr22 10+ year member]

its in a 2dr integra so not that long prolly 15 ft

 

[Wonger 10+ year member]

250

 

[johnson 10+ year member]

add up the fuse ratings on the amps

 

[Rawr-DQ 10+ year member]

I'd put in a 150 amp fuse

 

[gsr22 10+ year member]

my amps add up to 160

 

[05gliguy 10+ year member]

250 sounds good

 

[Rawr-DQ 10+ year member]

I dont think they make a 151-199 fuse, so like... a 150 or 200 I suppose.

 

[ultimate157 5,000+ posts]

add up the fuse ratings on the amps

No! Bad!

Fuse for the size of the wire.

 

[05gliguy 10+ year member]

looks like he has 1/0 gauge

 

[Rawr-DQ 10+ year member]

No! Bad!
Fuse for the size of the wire.

It's only bad if the wire is undersized for the load, otherwise it is ok the go under what the wire can handle because it'll blow before the wire gets the slightest chance to burn up.

 

[ultimate157 5,000+ posts]

It's only bad if the wire is undersized for the load, otherwise it is ok the go under what the wire can handle because it'll blow before the wire gets the slightest chance to burn up.

Not necessarily, because I keep hearing people come on here saying their fuses keep blowing, and the way they chose a fuse size was by that method. The wire is designed to handle a 300A load, so why fuse for (sometimes) 1/3rd of that? You'll only have to buy a bigger fuse later if you upgrade.

 

[Lakota 5,000+ posts]

300a is about right with 1/0. But, smaller is okay.

 

[05AztecRed 10+ year member]

Fuse for the wire size NOT per the amp load... 250A is sufficient