When clients call you because operating problems on pieces of their 120V equipment cause them to suspect their facility's power supply, you have to decide where to start your investigation. Don't ...

While standard receptacles typically use three wires -- hot, neutral and ground -- you'll occasionally find 2-prong outlets in older homes. Since this type of outlet lacks a ground connection, the ...

If you’re wondering what you can plug in and where, here’s everything you need to know so you don’t a) burn down your house or b) destroy your appliances. Every time you plug something into a wall ...

If you’ve ever looked closely at an electrical outlet, you may have noticed that one slot is slightly bigger than the other. Fiddling with an electrical plug and flipping it around until it easily ...

Locate the circuit breaker or fuse that controls the outlet you plan to replace and shut off the power to the circuit. Plug a lamp, radio or the GFCI tester into the outlet to test for power and make ...

All questions and answers are based on the 2017 NEC. Underlined text indicates a change in the rules for the 2017 NEC. Q. What are the Code rules for the installation of countertop and work surface ...