If you want to check a circuit is dead (not live), you should always use the three point method. First check a known live circuit, then check the dead...

HTML supports a variety of entity symbols which can be entered using either numbers or an entity name.  The number or name is preceded by the ‘&’ sign...

Fault calculations are one of the most common types of calculation carried out during the design and analysis of electrical systems. These calculations...

Capacitors are widely used in electrical engineering for functions such as energy storage, power factor correction, voltage compensation and many others...

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

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...

Electromechanical relays have been the traditional backbone of electrical protection systems.  While over recent years these have been replaced by microprocessor...

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...

A lot of our members work in countries where PPE (personal protective equipment) is regulated or they work for companies/organizations which take employee...

Installation of a UPS can help in reducing problems due to issues with the power supply.  A lot of people relate this to nine key issues.  Depending on...