How much power can 4 gauge wire handle?

[JeffM 10+ year member]

I was looking for the wire Guide thread but couldn't find it, So ill just ask the question here. How much power can 4 gauge power wire handle?

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[wong05tsx 10+ year member]

@15 ft ~1300 watts, by 14-1500 it'd be safe to go 0 or 2ga, or add another run

 

[JimJ 5,000+ posts]

Think of it in terms of current, not power...

 

[Ali1 10+ year member]

5000rms

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[twisztdauthorit 10+ year member]

if you ever plan on going over 1500 watts just save yourself the trouble and just start off with 0 awg

 

[hoxie08 5,000+ posts]

http://www.the12volt.com/info/recwirsz.asp ?

 

[JeffM 10+ year member]

Well I Currently have a Infinity 7541 amp, which will be used to power a set of CDT HD components, at 400 watts RMS. I already have a run of 4 gauge of power cable, and Im going to add a Kicker 750.1 amp, which will be used to power a Kicker sub at 750 Watts RMS. Altogether, my sytem will be using 1150 watts. Will I need to upgrade the wire?

 

[wong05tsx 10+ year member]

how longs the run from battery to trunk?

should be fine though

 

[JeffM 10+ year member]

how longs the run from battery to trunk?
should be fine though

I dont know exactly, but anywhere between 15 - 17 feet. It could even be shorter then that. I bought 17 feet, but I cut some off, I just don't know how much.

 

[n2audio 5,000+ posts]

I dont know exactly, but anywhere between 15 - 17 feet. It could even be shorter then that. I bought 17 feet, but I cut some off, I just don't know how much.

I think you're ok, but any more and it's time for an upgrade.

I have a 360w component amp, 700w sub amp. Runs fine on 4 ga, but it's only 14'.

 

[jaredspl 10+ year member]

you will be fine running 4 awg in your setup.

 

[Tiiimay 10+ year member]

while were on the topic, what size fuse would be adaquite if im running about 1200w? and i'm going to have a distribution block to a 200w speaker amp, and 1000 to my sub. is there a thread or anyhting about fuse size?

 

[btdickey99 5,000+ posts]

i would say a 150a fuse would be good...

 

[n2audio 5,000+ posts]

I'd go no larger than 125A.

I have 100 on my ~1100w.

I ran it on an 80 for a few years w/o problems.

The smallest fuse you can run w/o blowing it is technically the safest way to go.

 

[Tiiimay 10+ year member]

alright thank you. i'll start with an 80 then and see how that goes.