I just inspected a job yesterday and I asked the homeowner if everything was working OK. She said no, there were a few circuits that kept tripping. I asked a few questions and it seems the vacuum cleaner plugged into certain circuits would trip the AFCI. She wanted to know what she could do about it. First thing I suggested was to try the vacuum in a different circuit, and to try a different vacuum ( or dust buster/handheld, etc)in the same outlet and see if the breker trips. She said the EC who just got done wiring her new reno work said that it was the AFCI's fault. She asked me if that was true, and all I can say to her was that I have heard of such problems, but I haven't seen or heard of any cures yet. I didn't know if it was an appliance problem or a wiring problem.
