Wiring and circuits
Ground fault
A ground fault happens when current takes an unintended path to ground, such as through a metal box, a wire or a person.
The CPSC describes a ground fault as one in which an ungrounded line conductor touches a metal enclosure or other grounding conductor. OSHA says a GFCI trips when current to ground goes above a set value, one lower than what operates the regular breaker. This leak is what causes shock.
A GFCI is the device made to catch ground faults. Kitchens, bathrooms and outdoor spots are common places for them. Repeated trips need a licensed electrician. A short circuit is a related fault. See GFCI vs AFCI.
Related terms
Sources
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