For electricity to flow, everything needs to be connected in a big ring. It’s called a circuit. For example, the lights in most houses and flats are part of a circuit controlled by the consumer unit, ...

Look at almost any circuit, and it’s nearly sure that there will be a capacitor included in it. These two-terminal electrical components rank alongside resistors.

Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills. "This HVAC training video program, is available in DVD ...

A. To prevent unbalanced current in the parallel conductors due to inductive reactance, all circuit conductors of a parallel set [Sec. 310.10(H)] must be bundled together and secured to prevent ...