I have been switching my breakers over to AFCI a few at a time. I now have two AFCI breakers running to my garage, which are wired to two 20 amp gfci outlets (dedicated circuits). One of the outlets trips every time I try to run my 15amp miter saw, but runs fine when I have a 6amp drill press and 3amp heater running off it. Here is what I've done so far:
- I checked the wiring of the breaker in the panel, and it's fine (neutral and hot from the circuit going to the breaker, and then a separate neutral going from the breaker to the neutral bus bar).
- Since the other gcfi outlet works with the miter saw, I swapped the outlets, and it still flips the breaker.
- Then I re-ran the 12-2 wiring (not that difficult in my case), which also caused me to re-do the wiring at the breaker anyway, and it still flips when I fire up the miter saw.
The gfci outlets seem to work fine, the miter saw works fine on other gfci outlets, I have new 12-2 lines, the wiring at the breaker is perfect... is it possible I have a bad aFCi breaker? Thoughts and ideas are appreciated.