Question about Siemens 20Amp 1-pole arc-fault circuit breaker
I have been an electrician for 11 years and when these breakers came out in 2005 what a nightmare. These circuit breakers are extremely sensitive. They are designed to sense loose connections and to protect your house from fires caused by them. By increasing the load (ie. more lights or tv) it increases the size of the "arc" created by the loose connection and the circuit breaker trips before the 20 amp maximum. What I normally find as the cause is a loose connection in one of the receptacles or switches on the circuit. A lot of times, installers will use the "quick stab" inserts on the back of the outlets or switches instead of the side screws. Usually, if you "side screw" all of the receptacles and switches it will resolve the nuisance tripping. One other item that can cause them to trip is too many dimmers on the arc circuit but it doesn't sound like that is the problem you're having.
Posted on Nov 16, 2009
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Posted on Jan 02, 2017
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