The term 'N+1' relates to redundancy and simply means that if you required 'N' items of equipment for something to work, you would have one additional...

Everything physical in electrical engineering from insulations to conductors revolves around materials. Here we are listing common materials along with...

Visitors who like to type web address rather then click menus may be interested in how our URL structure works.

How often installations are inspected is up to the owner of the installation, provided such durations do not exceed any regulatory maximums in force. ...

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.

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...

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

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...

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...

Working in the vicinity of electrical equipment poses an hazard. In addition to electric shock hazard, fault currents passing through air causes Arc Flash...