Almost everyone has heard of a GFCI (Ground Fault Circuit Interrupter). These devices precisely monitor the balance of electrical current moving through a circuit and immediately cut off the electricity when a short occurs. For more on the basics of a GFCI see our article on Ground Fault Interrupter Circuits. Wiring a GFCI may vary slightly from manufacturer to manufacturer, but for the most part they follow the same general principles. We’ll try to simply and succinctly outline those below so that you understand how to correctly connect a GFCI into your electrical circuit and provide protection for an outlet or series of outlets and fixtures.