American inventor Thomas Alva Edison was born in Milan, Ohio on February 11, 1847. He was the youngest of seven children and received little formal schooling...

Induction motors are frequently used in both industrial and domestic applications.  Within the induction motor, an electrical current in the rotor is induced...

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...

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

Various techniques exist to enable the correct selection of batteries for UPS applications.  The procedure described below is one of the more common. ...

This article gives an introduction to IEEE 485 method for the selection and calculation of battery capacity.

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

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

The (relatively new) switchgear and control gear standard, IEC 61439 'Low-voltage switchgear and controlgear assemblies' has three methods which can be...

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