When you think about it, not having a third-wire ground at all is the ultimate ground fault. A GFCI does not require an ...

6. Check for bad electrical connections in the wiring. Before checking the electrical connections in a GFCI outlet’s wiring, homeowners will want to turn off the breaker connected to the outlet.

a loose wire in an electrical box could be causing the problem. Follow the photos below, to look for and repair loose connections. GFCI (short for "ground fault circuit interrupter") outlets ...