What's an Arc Flash? An arc flash occurs when a flashover of electric current leaves its intended path and travels through the air from...

All electrical systems require a means of disconnection so that the service can be shut down quickly if any dangerous conditions exist....

Wire types for North American wiring practices are defined by standards issued by Underwriters Laboratories, the Canadian Standards...

Knob-and-Tube Knob-and-tube wiring is so named because of the porcelain fittings used to support and insulate the conductors from the...

Remote Distribution Panels Although this topic is covered in other areas, because the emphasis is on safety, it's important to review....

What Is Grounding? Generally speaking, the difference between grounding and bonding is: Grounding is a direct connection to the earth to...

The service-entrance cable SEC (blue arrow) is a line of service conductors (white arrows) located between the terminals of the service...