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...

In an earlier note on the site [Photovoltaic (PV) - Electrical Calculations], the theory of solar (PV) cell calculations was introduced.  In particular...

Years ago I was told that you should always try to write the best report you can.  Many years later I still think on this as one of the better pieces of...

The image (reproduced from IEC 60909) shows a typical fault in an ac system.  From the illustration it can seen that there is an initial dc component ...

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

Depending where in the world you work, you are likely following one of two standards International Electrotechnical Commission (IEC) National...

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...

When selecting a cable, the performance of the cable under fault conditions is an important consideration. It is important that calculations be carried...

It's been a busy few months on different projects or busy couple of decades depending on how I look at it. I can say that on the odd (frequent) occasion...

Most installations involve some form of lightning protection system which is connected to an earth electrode.  The function of the earth electrode is to...