How much power can 2 gauge handle?

[JeffM 10+ year member]

As the topic says.

I currently have a Infinity 7541 amp powering my front speakers and will be also getting a Kicker 750.1 amp to power a sub. I already have a 4 gauge wire for the infinity amp so should I run a 2 gauge wire for the kicker or will another 4 gauge be ok?

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[krisfnbz 10+ year member]

As the topic says.
I currently have a Infinity 7541 amp powering my front speakers and will be also getting a Kicker 750.1 amp to power a sub. I already have a 4 gauge wire for the infinity amp so should I run a 2 gauge wire for the kicker or will another 4 gauge be ok?

4 will be okay for both your speakers and your amp. Running a 2 wouldnt hurt. Should have just ran a 1 and been done with it, so that in the future if you run more... you shouldnt ever need anything more than 3000w

 

[dragnix 5,000+ posts]

get whatever fits inside your amp

 

[JeffM 10+ year member]

4 will be okay for both your speakers and your amp. Running a 2 wouldnt hurt. Should have just ran a 1 and been done with it, so that in the future if you run more... you shouldnt ever need anything more than 3000w

So the 4 gauge I have installed now would be fine for both amps?

 

[audioarsonal 10+ year member]

^^Yeah the 4 ga is rated for 150-200amp draw so you'll be fine.

 

[n2audio 5,000+ posts]

150's the upper limit for 4 ga, but unless you're a full or near full volume all the time type of listener I'd just split the 4 to 8's, or maybe a 4 and an 8, and call it good. Just put a ~125A fuse near the battery and it should work fine.

 

[andrew2944r 10+ year member]

These are real numbers, right out of the 1951

U.S. Federal Electrician’s Code Book

AWG 4 - 105 amp

AWG 2 - 135 amp

AWG 1 - 160 amp

AWG 0 - 190 amp

Just some #'s I have always followed by, others might disagree.

 

[n2audio 5,000+ posts]

that must be adhering to some pretty stringent requirements.

bcae1.com has a table that gives current capacity at a length of 15' and a voltage drop of no more than 1/2v. 4 ga is 133A IIRC.