Hubbell Incorporated
Controllable test-pulse width and position for self-test ground fault circuit interrupter

Abstract:

An electrical wiring device including a fault detection circuit and a test fault circuit. The fault detection circuit is configured to detect real, simulated and test fault conditions. The test fault circuit is configured to generate one or more test pulses that cause said test fault condition. Wherein said one or more test pulses are generated to occur outside of an active region of said fault detection circuit, and wherein the one or more test pulses do not affect a leakage current.