Electrical and related buildings technology
GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:
It wasn't so long ago I was telling someone that I don't use rules of thumb as most things are easily calculated anyhow. As it turns out I last week...
A fundamental concept behind the operation of alternating current systems is that voltage and current waveforms will be sinusoidal – a Sine Wave. This...
American inventor Thomas Alva Edison was born in Milan, Ohio on February 11, 1847. He was the youngest of seven children and received little formal schooling...
The (relatively new) switchgear and control gear standard, IEC 61439 'Low-voltage switchgear and controlgear assemblies' has three methods which can be...
If two dissimilar metals are touching and an external conducting path exists, corrosion of one the metals can take place. Moisture or other materials...
Various techniques exist to enable the correct selection of batteries for UPS applications. The procedure described below is one of the more common. ...
I have been thinking recently that there appears to be less professional integrity around than when I first started my career in electrical engineering...
A single phase system is perhaps the most common type of system most people are familiar with. This is what people have in their homes and what appliances...
Traditionally substations have used circuit breakers, current transformers (CT), voltage transformers (VT) and protection relays all wired together using...
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