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

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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...

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...

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

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...

Motor starting and its associated problems are well-known to many people who have worked on large industrial processes. However, these things are, of course...

Steel ladders, trays and baskets form the backbone of cable containment systems. Often these items need some form of surface treatment to prevent corrosion...

Most installations involve some form of lightning protection system which is connected to an earth electrode.  The function of the earth electrode is to...

The other day I was reading 'Night of the New Magicians' by Mary Pope Osborn with my son.  The story is about a young boy and girl who travel back in time...