Circuit breakers are switching devices whose primary function is to isolate parts of an electrical distribution system in the even of abnormal conditions...

If you are working on a large plan, get the real coordinates [latitude, longitude] for two or more points and add them to the drawing. That way you can...

A fundamental concept behind the operation of alternating current systems is that voltage and current waveforms will be sinusoidal – a Sine Wave. This...

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...

myElectrical does not support or promote the use of copyrighted material without the copyright owner's consent. If you believe that material for which...

I have been thinking recently that there appears to be less professional integrity around than when I first started my career in electrical engineering...

IEC 60947 is the circuit breaker standard and covers the marking of breakers in detail. Any manufacturer following this standard should comply with the...

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

HTML supports a variety of entity symbols which can be entered using either numbers or an entity name.  The number or name is preceded by the ‘&’ sign...

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...