September 2017 (1) October 2016 (1) January 2015 (1) December 2014 (1) November 2014 (1) October 2014 (1) August 2014 (1) July 2014 (1) June 2014 (1) May 2014 (1) April 2014 (1) February 2014 (1) January 2014 (2) November 2013 (1) October 2013 (2) October 2013 (3) September 2013 (3) August 2013 (2) July 2013 (2) May 2013 (4) April 2013 (3) February 2013 (4) January 2013 (3) December 2012 (1) November 2012 (2) September 2012 (2) August 2012 (5) July 2012 (4) June 2012 (14) May 2012 (18) April 2012 (18) February 2012 (4) January 2012 (5) December 2011 (4) November 2011 (5) October 2011 (6) October 2011 (2) September 2011 (2) August 2011 (2) July 2011 (1) May 2011 (2) April 2011 (2) November 2010 (2) October 2010 (1) September 2010 (1) August 2010 (3) July 2010 (2) June 2010 (4) May 2010 (8) April 2010 (4) February 2010 (1) January 2010 (1) November 2009 (2) October 2009 (1) September 2009 (5) August 2009 (1) July 2009 (1) June 2009 (2) May 2009 (1) April 2009 (5) February 2009 (3)


Low Voltage Circuit Breakers

Circuit breakers are switching devices whose primary function is to isolate parts of an electrical distribution system in the even of abnormal conditions...

Robots - Interesting Videos

The robot folding towels post below was interesting enough at the time to post a link.  Recently I’ve come across a couple of other interesting videos...

How a Digital Substation Works

Traditionally substations have used circuit breakers, current transformers (CT), voltage transformers (VT) and protection relays all wired together using...

Three Phase Current - Simple Calculation

The calculation of current in a three phase system has been brought up on our site feedback and is a discussion I seem to get involved in every now and...

What happened to the cable notes?

If you are wondering what happened to our cable notes, the short answer is that we have moved them to myCableEngineering.com.  The "Knowledge Base" at...

Fire Resistant and Fire Retardant Cables

Fire resistant and fire retardant cable sheaths are design to resist combustion and limit the propagation of flames. Low smokes cables have a sheath designed...

Differential protection, the good old days

This morning I was explaining how differential protection works to a junior engineer. To give him something to read I opened up the NPAG (Network Protection...

Write your best report

Years ago I was told that you should always try to write the best report you can.  Many years later I still think on this as one of the better pieces of...

Cable Sizing Tool

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...

Voltage Levels – Confused?

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...

Have some knowledge to share

If you have some expert knowledge or experience, why not consider sharing this with our community.  

By writing an electrical note, you will be educating our users and at the same time promoting your expertise within the engineering community.

To get started and understand our policy, you can read our How to Write an Electrical Note