-prong plug needs a two-prong adapter. If you have to run extention cords to plug in electrical devices. What size service do I install in my home? Most states call for 100 amps... also requires all kitchen outlets for countertop use to be GFCI protected. GFCI outlets must be installed in any area where electricity and water may come into contact, including... corrected this somewhat. It protects any appliance plugged into it, and can also be wired to protect other outlets that are connected to it. The GFCI circuit breaker controls an entire...