American inventor Thomas Alva Edison was born in Milan, Ohio on February 11, 1847. He was the youngest of seven children and received little formal schooling...

The other day I was talking to a colleague who is a building services consultant.  Despite regularly specifying dry-type/cast resin transformers he was...

We have had the Wiki with us for a long time now, but at last I have decided to say bye bye – more details on why below.

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...

ABB has produced a range of technical guides that offer concise explanations of the major technologies and technical issues in low voltage AC drives. ...

A load flow study is the analysis of an electrical network carried out by an electrical engineer. The purpose is to understand how power flows around...

I was having a conversation the other day about voltage levels.  While everyone was in agreement that low voltage was 1000 V and less, there was more confusion...

Problems on achieving maximum voltage drop within an installation come up often. Depending where you live, local regulations will have different limits...

Photovoltaic (PV) cells (sometimes called solar cells) convert solar energy into electrical energy.  Every year more and more PV systems are installed...

Various techniques exist to enable the correct selection of batteries for UPS applications.  The procedure described below is one of the more common. ...