The way a light switch is wired depends on whether the power comes into the light box or the switch box first. These two ...

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 ...

Portable loads such as video cameras, halogen flood lights, electrical irons, hand drillers, grinders, and cutters are powered by connecting long 2- or 3-core cables to the mains plug. Due to ...

It’s important to understand the difference between grounding and bonding so you correctly apply the provisions of Art. 250. We earth ground systems to the earth to reduce overvoltage (from ...