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

Two driverless and solar power vans have departed from Italy on their way to China via the silk road. During the 13,000 kM trip the vans will drive themselves...

IEC 61439 'Low-voltage switchgear and controlgear assemblies', specifies standard arrangements of switchboard (call forms of internal separation). The...

For the past few years I have reading eBooks on my HTC touch phone. On and off I have debated buying an eReader and recently purchased a Sony PRS-300 ...

Often document control is dictated by project requirements, for example a particular organisation may have an existing numbering system. Existing company...

When looking at the design of a lighting scheme it is useful to have an understanding on the nature of light itself and some of the basic theory associated...

The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.

Exposure to time varying magnetic fields, from power frequencies to the gigahertz range can have harmful consequences.  A lot of research has been conducted...

Years ago I was told that you should always try to write the best report you can.  Many years later I still think on this as one of the better pieces of...

The correct sizing of current transformers is required to ensure satisfactory operation of measuring instruments and protection relays. Several methods...