The other day I was reading 'Night of the New Magicians' by Mary Pope Osborn with my son. The story is about a young boy and girl who travel back in time...
Following on from my post on railway electrification voltages, I thought an introduction to traction substations would be a good idea. Traction substations...
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...
The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.
The International System of Units (abbreviated SI) is the world's most widely used system of units. The system consists of a set of units and prefixes...
GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:
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...
Light Emitting Diodes (LED ) are increasing gaining favour in both the domestic and commercial sectors; due to their efficiency, sustainability and durability...
This article gives an introduction to IEEE 485 method for the selection and calculation of battery capacity.
Working in the vicinity of electrical equipment poses an hazard. In addition to electric shock hazard, fault currents passing through air causes Arc Flash...
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