When thinking about watts (W) or kilowatt (kW = 1000 W) it can be useful too keep in mind the fundamental ideas behind the unit. Watt is not a pure electrical...

It wasn't so long ago I was telling someone that I don't use rules of thumb as most things are easily calculated anyhow.   As it turns out I last week...

A single phase system is perhaps the most common type of system most people are familiar with. This is what people have in their homes and what appliances...

Modelica is an open source (free) software language for modelling complex systems. Having never used it before, I thought I would download a development...

Working in the vicinity of electrical equipment poses an hazard. In addition to electric shock hazard, fault currents passing through air causes Arc Flash...

This is the second post in a series of two on periodic electrical inspections. In the first post, I discussed how often inspections should be carried out...

myElectrical does not support or promote the use of copyrighted material without the copyright owner's consent. If you believe that material for which...

Variable frequency drives are widely used to control the speed of ac motors.  This note looks at the mechanisms which enable drive units to control the...

Control theory looks at how systems work and are controlled from a mathematical view.  This note gives a brief introduction to some of the concepts – more...

I'm a fan of using manufacturers catalogues. There are two main reasons for this. Firstly, if your involved in the purchase of equipment, you will likely...