What Frank states above is a very good synopsis of the problems. I have a long (40+ years) electrical engineering background, and everything I have found researching this false tripping problem, leads to lots of POSSIBLE causes, and lots of confusion. The basis problem is that the specific faults the AFCI is designed to detect and trip for look a lot like other naturally occurring phenomena that they do not need to trip for. This is all very aggravating for the end user.
Hope this helps.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV.
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