Hardwired ground fault circuit interrupters (GFCIs) stop the flow of electric current in the event of a ground fault. During a ground fault, electrical current unintentionally flows toward the ground and can shock people who are in the current's path toward the ground. GFCIs have sensing modules that trip circuit breakers during a ground fault incident to keep people safe. Ground faults can occur when electrical equipment comes into contact with moisture, so GFCIs are used with electrical receptacles in moist, humid, and wet environments.
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