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

The IEC publishes a series of documents and rules governing the preparation of documents, drawings and the referencing of equipment.   Depending on country...

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

Electrical notes are a collaborative collection of electrical engineering information and educational material. Any registered user can add content. ...

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...

Years ago I was told that you should always try to write the best report you can.  Many years later I still think on this as one of the better pieces of...

Anyone specifying or using electric motors should have a basic understanding how the insulation is related to temperature. Three classes of insulation...

In 2011, with the introduction of it’s Panda search ranking algorithms, Google introduced tools for determining the original author of posts.  The intention...

Lead acid batteries are cost effect and reliable, making them suitable for many applications.This note examines topics of interest associated with the...

Our cable sizing tool is one of the more popular tools on the site.  The tool enables cables to be sized in compliance with BS 7671 (the IEE Wiring Regulations...