Locate the circuit breaker or fuse that controls the outlet you plan to replace and shut off the power to the circuit. Plug a lamp, radio or the GFCI tester into the outlet to test for power and make ...

A GFCI is only as good as its installation and inspection. A ground-fault circuit interrupter (GFCI) is the only protection device designed to protect people against electric shock from an electrical ...

GFCI protection requires extra attention in a construction environment. The GFCI has no doubt saved many people from electrocution, so it would be easy to start thinking GFCIs will always protect you.

A friend who was buying an older house was concerned about electrical safety and asked for my opinion as an electrical engineer. All of the AC receptacles (also called outlets) in the house were the ...