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11-28-2011, 02:12 PM
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Sage
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Join Date: Sep 2010
Location: Granville, OH.....and TV snowflakes!
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More than likely, that's an arc-fault (AFCI) breaker.........not to be confused with a ground-fault (GFCI) breaker.
Here's a reasonable explanation: http://en.wikipedia.org/wiki/Arc-fau...it_interrupter
Bill 
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