Electrical and related buildings technology
Many questions sent in to the site are in connection with motor starting and in particular star-delta. For all but the simplest application, there is...
Circuit breakers are switching devices whose primary function is to isolate parts of an electrical distribution system in the even of abnormal conditions...
The new standard IEC 61439 replaces the old 60439. Compared to the old standard, the new 61439 is a more clearly defined and takes into account the assembly...
When selecting a cable, the performance of the cable under fault conditions is an important consideration. It is important that calculations be carried...
Using software in our work is essential for most of us and we are becoming even more dependant on it's use. While software is a great asset, many times...
Visitors who like to type web address rather then click menus may be interested in how our URL structure works.
A battery consists of one or more cells, each of which use stored chemical energy to produce electrical energy, There are many types of cells and these...
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...
Light Emitting Diodes (LED ) are increasing gaining favour in both the domestic and commercial sectors; due to their efficiency, sustainability and durability...
Most installations involve some form of lightning protection system which is connected to an earth electrode. The function of the earth electrode is to...
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