From the earliest times, humans have found ways to create light. Pre-historic peoples used natural materials (moss, grass, etc.) soaked in animal fat and...

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

Visitors who like to type web address rather then click menus may be interested in how our URL structure works.

Estimating maximum demand is a topic frequently discussed. Working out how much power to allow for a building can be very subjective . Allowing too much...

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

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

Traditionally generation of electricity has involved rotating machines to produce alternating sinusoidal voltage and current (a.c. systems). With the development...

Ever wondered what kind of power an aircraft uses when parked at the airport stand. Normally the aircraft generates it own power, but when parked with...

If your are ever called out to troubleshoot something on your electrical system, one of the first things consider is the supply voltage. You want to ensure...

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...