An apparatus and method for detecting electrical arc faults that has reduced susceptibility to nuisance tripping. The apparatus includes a current sensor, an input sense circuit, an arcing sense circuit, a power supply, a tripping circuit, a processing unit, and an electromechanical interface. The processing...http://www.google.com/patents/US7408750?utm_source=gb-gplus-sharePatent US7408750 - Methods of detecting arc faults characterized by consecutive periods of arcing
