Previously, we observed that Art. 200 refers you to Art. 100 for the definitions of three terms that include the word grounding. Before looking at those definitions, let’s address the concept of ...

Article 200 provides requirements for the use and identification of grounded conductors. As noted in Sec. 200.6(B)(4), An insulated grounded conductor 4 AWG or larger ...

Most homeowners think of grounding as a technical detail that only matters to electricians, yet it quietly decides whether a fault ends in a harmless trip or a house fire. When grounding is ...

This is the last in a three-part series, archived under Tech Tips at radioworld.com. The heart of any effective lightning protection scheme is a central ground system. Such a system is shown in the ...

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 ...

Lightning is one of the main paths for electrons to return from the atmosphere to the earth's surface. As in all electron flow, lightning is a form of current flow. Enormously high voltages (Table 1) ...