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 ...

Copper metal is usually at the core of any electrical wire, and this carries the current for the entire device. Wire insulation is another crucial but understated component. Common wire is insulated ...

First, what's a subpanel? In my words, a subpanel is an electrical panel wired downstream from the Service Equipment, which is more commonly known as the main panel. For a lengthy discussion on the ...

Underlined text indicates a Code change. Q. The neutral of a grounded electric utility service must be installed and terminated at what location in accordance with the NEC? A. A service neutral ...

This article discusses many common misunderstandings about the function of the neutral wire and its relation to power problems. The subjects of dedicated lines, phase reversal, isolation transformers, ...