Our question and answer system while letting you do exactly what it says, is much more.  It is a dynamic user driven system, where our users not only ask...

A battery consists of one or more cells, each of which use stored chemical energy to produce electrical energy, There are many types of cells and these...

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

Power cables can basically be classified into earthed and unearthed cables, where earthed and unearthed refer to the application for which the cable is...

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

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

When looking at the design of a lighting scheme it is useful to have an understanding on the nature of light itself and some of the basic theory associated...

A recurring theme on our forums is cable sizing. Now many installations are unique and require special consideration. However, a lot of the time things...

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

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...