If you are working on a large plan, get the real coordinates [latitude, longitude] for two or more points and add them to the drawing. That way you can...

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...

If you have a great idea or invent something the last thing you want is someone to steal the idea. One of the things you can do is protect the intellectual...

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.

If your are ever called out to troubleshoot something on your electrical system, one of the first things consider is the supply voltage. You want to ensure...

In three phase systems, the use of transformers with three windings (or legs) per side is common.  These three windings are often connected in delta or...

There are a lot of interesting two page type notes on various medium voltage topics – switchgear, circuit breakers, bus systems etc. It is on the Siemens...

When selecting a generator, there are inherent limits on the active and reactive power which can be delivered. Generators are normally sized for a certain...

Three phase systems are derived from three separate windings, either connected in delta or star (wye). Each winding can be treated separately, leading...