Patent ID: 7471075

Claim:
A testing system comprising: a hand-held transmitter including an enclosure and having a plurality of prongs that plug into a receptacle electrically coupled to a selected branch circuit, the transmitter having a circuit within the enclosure that tests an arc fault circuit interrupter electrically coupled to the selected branch circuit by creating a pulse on the branch circuit that trips the arc fault circuit interrupter, the pulse being created by generating a timing period signal for generating simulated arc fault pulses by calibrating an internally calculated clock rate of a processor based on a received synchronization signal; and outputting the simulated arc fault pulses at a timing period defined by the timing period signal output by the processor, wherein the transmitter has a second circuit within the enclosure that tests whether the receptacle is wired properly by indicating whether at least one of a hot wire, a neutral wire, and ground wire of the branch circuit is wired properly based on current flow through at least one of the hot wire, neutral wire, and ground wire.