Before checking the electrical connections in a GFCI outlet’s wiring, homeowners will want to turn off the breaker connected to the outlet. After double-checking the breaker has been flipped to ...

see Wiring Switches and Outlets). Locate the circuit breaker or fuse that controls the outlet you plan to replace and shut ...

GFCI (Ground Fault Circuit Interrupter) breaker switches ... to use as long as you don't remove any covers or touch exposed wiring. The switches are designed for the average homeowner to operate ...

See? Good and evil. An RCD (or GFCI in the States) is a kind of circuit breaker that trips when the amount of current in the hot and neutral mains power lines aren’t equal and opposite ...