“GFCI” is maybe a bad name because it describes what the system is supposed to accomplish but not what it does.
It interrupts the circuit in response to a current imbalance between hot and neutral. Kirchoff’s laws… if the current is imbalanced, it must be going somewhere else.
It interrupts the circuit in response to a current imbalance between hot and neutral. Kirchoff’s laws… if the current is imbalanced, it must be going somewhere else.