A friend who was buying an older house was concerned about electrical safety and asked for my opinion as an electrical engineer. All of the AC receptacles (also called outlets) in the house were the ...

Q: We’re selling our house, and the buyer had an inspection done on it. The bad news is that our bathroom needs a ground-fault circuit interrupter (GFCI) installed. It’s the only outlet in the ...

All questions and answers are based on the 2011 NEC. Q. Are outdoor receptacles at a dwelling unit required to be tamper-resistant? A. Yes. According to 406.12, all non-locking type 15A and 20A, 125V ...

What is ground-fault protection? The answer depends on whether you are talking about ground-fault protection of equipment or ground-fault protection of people. Just because ground-fault protection is ...