ECN Forum Forums General Topics of the Trade General Discussion Area AFCI's Tripping upon Ground Fault Test

RockyJo, are you implying that the smoke detectors will chirp if they loose their primary building power? If so that is not the case with any of the detectors I have used. They will chirp if the battery is missing or low but they only way to know that the primary power source is off is to look for the indicator light inside the detector.