Often document control is dictated by project requirements, for example a particular organisation may have an existing numbering system. Existing company...

Power factor is the ratio between the real power (P in kW) and apparent power (S in kVA) drawn by an electrical load. The reactive power (Q in kVAr)...

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

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.

The mobile phone was born in 1973. They were the size of a brick and weighed a couple of kg, making them difficult to fit into your pocket. At a few thousand...

I have been thinking recently that there appears to be less professional integrity around than when I first started my career in electrical engineering...

While there are a vast array of cable insulation materials, these are often divided into two general types; Thermoplastic or Thermosetting. For example...

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...

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...

Alternating current (a.c.) is the backbone of modern electrical power distribution. In this article I’ll be pulling some of the more important concepts...