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Old 03-21-2007, 09:40 PM   #1
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AFCI/GFI breakers?


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This requirement of the NEC is typically accomplished by using a kind of circuit-breaker (defined by UL 1699) in the breaker panel that provides combined arc-fault, ground-fault, and over-current protection.
I was reading about this, 210.12B I believe, and am a little confused...

So do I use AFCI compliant breakers in the box, and still use GFI receptacles at the appropriate locations?

What do they mean by "combination type" required Jan 2008?

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Last edited by elementx440; 03-21-2007 at 09:51 PM.
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Old 03-22-2007, 10:08 AM   #2
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AFCI/GFI breakers?


For new construction, AFCI breakers are required for bedroom outlets only (for now), so there should be no GFCI required outlets on those circuits. The GFCI protection provided by the AFCI breaker trips at a higher level than either a GFCI receptacle or GFCI only breaker and does not provide the same level of protection.

Should you have an older home and are adding AFCI breakers to circuits that have outlets that require GFCI protection, then yes, you should use both.

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Old 03-22-2007, 05:32 PM   #3
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AFCI/GFI breakers?


That is not at all what it means. It DOES NOT mean combination AFCI/GFCI.
At present there should be no areas that would require AFCI and GFCI protection at the same time.

Here is a clear concise explanation of what a combination AFCI device is. This is a quote from MDShunk, an upstanding member of many forums. This was recently written so I have no reason to re-write it:

"A "combination type" detects series faults (open wire, barely touching), as well as parallel faults (just barely a short circuit). The present generation of AFCI's only detect parallel arcing faults."
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Answers based on the 2008 & 2011 NEC.
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