Over the past year or so I've been involved in on going discussions related to referring fault levels from the secondary of a transformer to the primary...

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...

I've been considering a blog on the 110 or 230 Volt issue for a while.  While browsing the Internet I came across a great summary by Borat over at  engineering...

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

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

Per unit fault calculations is a method whereby system impedances and quantities are normalised across different voltage levels to a common base.  By removing...

One of the requirements to ensuring that everything works is to have equipment selected, manufactured and verified [tested] to IEC standards. Not all equipment...

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

I have been thinking recently that there appears to be less professional integrity around than when I first started my career in electrical engineering...

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