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Old 01-04-2011, 09:28 AM   #1
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How to find Arc Fault Breaker Amps


I changed a an arc fault breaker on a circuit in a bedroom and living room that was popping and the lights were flickering a little. I put in a new 15 amp breaker and it still pops and lights flicker. The problem is I broke the amp rating off the breaker switch and don't remember what it was. I put in a 15 amp to be safe and I wanted to make sure the old one wasn't a 20amp before I call an electrician. Is there a way to check the old breaker to see how many amps it is, it is a GE arc fault with a blue test button. There are a lot of numbers on it but I don't know how to read them. Any help would be appreciated.




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Old 01-04-2011, 09:37 AM   #2
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The amp rating will be on the handle of the breaker.
The size of the wire determines the size of the breaker.
The wire size will either be 14=15 amps, or 12=20 amps.
With lights flickering and tripping the breaker, I say it is doing its job.
You need to pull all the receptacles on this circuit and look for loose connections.


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Old 01-04-2011, 10:25 AM   #3
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I'd second that... Odds are that you aren't pulling more than 15 amps yet less than 20 amps, so if your problem was the breaker even if it was a 20 amp breaker, you would have likely fixed it even with a 15 amp breaker. It seems more likely there is another problem causing the breaker to work as intended.

And I'd second that you can probably figure out whether it was 15 or 20 by the wire gage. If it's 14 gage it was definitely 15 amp.
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Old 01-04-2011, 12:48 PM   #4
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And if you can't figure it out, use a 15. No harm in running 15A on 12Ga wire, but it's a big no-no to run 20A on 14Ga wire.
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Old 01-04-2011, 03:15 PM   #5
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Thanks for all the input guys, will be heading out there to find the loose wire.

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