circuit breaker question/mistake???

[jmasc 10+ year member]

I bought a 150a circuit breaker today thinking it would be right for my set-up but now im having second thoughts. I though I had a 1/0 power and ground but its only a 4ga, whoops. So basically my question is, is the 150a going to be fine for my 4ga hooked up to my bx1605d?

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[jmasc 10+ year member]

anyone......

 

[mtlhead 10+ year member]

you'll be fine, i had 4awg to my bx 1605 on a 200 amp circuit breaker... 150 will be fine though

 

[jmasc 10+ year member]

thanks //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[johnecon2001 5,000+ posts]

The amperage is fine for 4awg. Don't go higher than 150 though.

Also, you should consider returning the breaker and buying a fuse holder with an ANL style fuse. The breakers have been known to melt to the open position and fry things.

Personally, I'd rather replace a $3 fuse than half my car.

 

[jmasc 10+ year member]

The amperage is fine for 4awg. Don't go higher than 150 though.
Also, you should consider returning the breaker and buying a fuse holder with an ANL style fuse. The breakers have been known to melt to the open position and fry things.

Personally, I'd rather replace a $3 fuse than half my car.

I don't know if ill be able to return it, think i'll be fine till christmas. Should be able to afford one then...

 

[helotaxi 5,000+ posts]

Melting in the open position wouldn't be a problem, it would cut the circuit. Melted closed is what usually happens though. Every time you break the contact, you reduce the reliability of the breaker. If you want one as a switch, bakc it up with a fuse for actual protection.