Learning Electrical Engineering

We have already discussed how to install and wire a photocell switch in a lighting installation and how to size a photocell for a lighting ...

To calculate the full load current of a single phase or 3-phase AC motor is pretty straight forward. However, the terms input power and shaf...

What is a Contactor? A contactor is an electrical device used for switching an electrical circuit on or off. It is similar to a relay, but t...