When current flows within a wire, a magnetic field is created. The potion of this magnetic field perpendicular to the wire is called the magnetic flux...

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 a previous article I looked at the dc resistance of conductors and in this article we turn our attention to ac resistance. If you have not read the...

Modelica is an open source (free) software language for modelling complex systems. Having never used it before, I thought I would download a development...

I was having a conversation the other day about voltage levels.  While everyone was in agreement that low voltage was 1000 V and less, there was more confusion...

These lifts were first built in 1884 by J. E. Hall and called a paternoster ("Our Father", the first two words of the Lord's Prayer in Latin) due to its...

Electric motors are one of the most widely used items of electrical equipment. Improving motor efficiency benefits include, reduced power demand, lower...

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

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

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