These lifts were first built in 1884 by J. E. Hall and called a paternoster ("Our Father", the first two words of the Lord's Prayer in Latin) due to its...

This post is quick introduction and overview to different railway electrification voltages used in answer to a question sent in via email. While there...

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

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...

A quick post in connection with an email question: Live Tank - the circuit breaker the switching unit is located in an insulator bushing which is live...

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.

When current flows within a wire, a magnetic field is created. The potion of this magnetic field perpendicular to the wire is called the magnetic flux...

A frequent problem in fault calculations is the obtaining of equipment parameters.  While it is always preferable to use the actual parameters of the equipment...

The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.

The European Union is implementing a voluntary code of practice for participants with the aim of improving the overall efficiency of data centres. As part...