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

Gauss's Electrical law defines the relation between charge ("Positive" & "Negative") and electric field.  The law was initially formulated by Carl Friedrich...

GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:

Problems on achieving maximum voltage drop within an installation come up often. Depending where you live, local regulations will have different limits...

Control theory looks at how systems work and are controlled from a mathematical view.  This note gives a brief introduction to some of the concepts – more...

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...

If two dissimilar metals are touching and an external conducting path exists, corrosion of one the metals can take place.  Moisture or other materials...

Fault calculations are one of the most common types of calculation carried out during the design and analysis of electrical systems. These calculations...

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

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...