What is a GFCI and how does it work? How does it differ from a GFI?
A Ground Fault Circuit Interrupter (GFCI) is an electronic device for protecting people from serious injury due to electric shock. GFCIs constantly monitor electricity flowing in a circuit. If the electricity flowing into the circuit differs by even a slight amount from that returning, the GFCI will quickly shut off the current flowing through that circuit. The advantage of using GFCIs is that they can detect even small variations in the amount of leakage current, even amounts too small to activate a fuse or circuit breaker. GFCIs work quickly to protect people from severe electric shocks and electrocution. In contrast, a GFI only is ground fault protection for equipment to protect from damaging line to fault currents by disconnecting all ungrounded conductors of the faulted circuit. GFI Ground-fault protection is intended to protect just the equipment itself because it is sensitive to leakage currents above 30 mA. These protection devices are intended to substantially reduce the risk
