Hey everyone, just got a job working for a local electrician, and wanted to ask a question or two about afci breakers. I was wondering about some possible reasons for an afci breaker to nuisance trip? A guy at work the other day said that he went out on a service call where this was a problem and apparently the hot in the device boxes was too close to the nuetral and the magnetic field around the hot conductor was affecting the nuetral and causing the breaker to trip. I would have never thought of that and I wanted to see what you guys have ran into with these breakers. Also, is there a good way to tell if the afci is just nuisance tripping for some non-life threatening reason or if there is actually a fastener through the wire or something like that?