Press the TEST button. You should hear an audible click, the light(s) should go off, and the RESET button will pop out slightly. This means the GFCI is doing its job and responding to a fault.

GFCI outlets reduce the danger of deadly shock from faulty plug-in cords and devices. A GFCI (ground fault circuit interrupter) is a special type of outlet that detects dangerous ground faults and ...

They're also suitable for garages and exterior use, though you'll still want to protect the outlet from the elements with a cover or enclosure. GFCI receptacles protect against power surges ...

Mr. Electric® shares practical ways for homeowners to reduce risks and modernize systems during National Electrical Safety ...