When sizing cables, the heat generated  by losses within any sheath or armour need to be evaluated. When significant, it becomes a factor to be considered...

We have had the Wiki with us for a long time now, but at last I have decided to say bye bye – more details on why below.

Collection of links to various places with useful motor information. I’ll try and return to the page every now and again to update it with any motor notes...

Sometimes it’s useful to be able to quickly lookup a piece of technical information.  This note is a collection of information related to motors, and in...

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

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

It starts with me reading one of the Horrible History books with my son (Groovy Greeks). Arrows were mentioned which lead to the discussion of the bodkin...

This is the second post in a series of two on periodic electrical inspections. In the first post, I discussed how often inspections should be carried out...

The standard aims to consolidate AC and traction voltages within the industry and defines the following bands: band 1 - A.C. systems 100 V to 1...

If you have no idea how electrical circuits work, or what people mean then they talk about volts and amps, hopefully I can shed a bit light.  I’m intending...