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If you want to check a circuit is dead (not live), you should always use the three point method. First check a known live circuit, then check the dead...

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

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...

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

In 2011, with the introduction of it’s Panda search ranking algorithms, Google introduced tools for determining the original author of posts.  The intention...

In the previous note we looked at the approach taken by the standard to the sizing of cables and illustrated this with an example.  We then looked at one...

Dielectrics (insulating materials for example) when subjected to a varying electric field, will have some energy loss.   The varying electric field causes...

IEC 60228 is the International Electrotechnical Commission's international standard on conductors of insulated cables. Among other things, it defines a...

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