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 ...

The multi-wire branch is here to stay; so is ground fault protection. But we should unite these technologies only when it’s a good match. Ground-fault protection and the multi-wire branch circuit ...