Your Phoenix Electricians install a large amount of GFCI receptacles. You might be wondering what is a GFCI Receptacle? GFCI stands for ground fault circuit interrupter, and it can save your life. An easy way to explain what a GFCI receptacle does, is it acts like a kill switch. In less than a second it can shut off the electricity to avoid fires, shock and the most severe death. If a GFCI detects electricity is traveling in a place it should not, water or a person, it will instantly trip the circuit to stop it.