IEC 60228 is the International Electrotechnical Commission's international standard on conductors of insulated cables. Among other things, it defines a...

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

Collection of links to various places with useful motor information. I’ll try and return to the page every now and again to update it with any motor notes...

Following on from my post on railway electrification voltages, I thought an introduction to traction substations would be a good idea. Traction substations...

For unbalance conditions the calculation of fault currents is more complex. One method of dealing with this is symmetrical components. Using symmetrical...

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...

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

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

Motor starting and its associated problems are well-known to many people who have worked on large industrial processes. However, these things are, of course...

We have a sister note to this (Robots - Interesting Video), in which I have posted some videos of interesting robots developed by commercial corporations...