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...

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

Depending where in the world you work, you are likely following one of two standards International Electrotechnical Commission (IEC) National...

Dielectrics (insulating materials for example) when subjected to a varying electric field, will have some energy loss.   The varying electric field causes...

In the previous note we looked at the approach taken by the standard to the sizing of cables and illustrated this with an example.  We then looked at one...

Our cable sizing tool is one of the more popular tools on the site.  The tool enables cables to be sized in compliance with BS 7671 (the IEE Wiring Regulations...

Following on from my post on railway electrification voltages, I thought an introduction to traction substations would be a good idea. Traction substations...

When sizing cables nearly, everyone uses some form of software. This ranges from homespun spreadsheets to complex network analyses software. Each has its...

Photovoltaic (PV) systems are typically more efficient when connected in parallel with a main power gird. During periods when the PV system generates energy...

How often installations are inspected is up to the owner of the installation, provided such durations do not exceed any regulatory maximums in force. ...