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.

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

In an earlier note on the site [Photovoltaic (PV) - Electrical Calculations], the theory of solar (PV) cell calculations was introduced.  In particular...

Cable insulation is used to provide electrical separation between conductors of  a cable.  During the historical development of cables, numerous types...

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...

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

Using software in our  work is essential for most of us and we are becoming even more dependant on it's use.  While software is a great asset, many times...

When sizing cables, the heat generated  by losses within any sheath or armour need to be evaluated. When significant, it becomes a factor to be considered...

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

ABB has produced a range of technical guides that offer concise explanations of the major technologies and technical issues in low voltage AC drives. ...