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

One of the comments on my Motor Starting Series was asking for something on duty cycles. Here it is. As a purchaser of a motor, you have responsibility...

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

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...

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...

Our IEE cable sizing was wrote a few years ago and had become rough around the edges. I thought it was time to give the tool a service. Unfortunately when...

This is the first of two posts on the resistance of conductors. In the next post I will look at the ac resistance, including skin effect and we deal with...

GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:

IEC 62305 'Protection against lightning' requires a risk assessment be carried out to determine the characteristics of any lightning protection system...

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...