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...

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

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...

Multimeters are undoubtedly the most common item of electrical test equipment in use.  Often it is the first piece of equipment people will turn to when...

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

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

We've been sending out Newsletters on a regular basis for a few weeks now. To do this we have been using Google's Feedburner service. While Feedburner...

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

GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:

When selecting a cable, the performance of the cable under fault conditions is an important consideration. It is important that calculations be carried...