Cable Sheath and Armour Loss


When sizing cables, the heat generated  by losses within any sheath or armour need to be evaluated. When significant, it becomes a factor to be considered in the sizing of cables. This note looks at how to obtain the necessary loss factors for use within the IEC 60287 calculation.  In addition, the loss factors quantify......Read More..

By Steven McFadyen on Sunday, October 13, 2013



A battery consists of one or more cells, each of which use stored chemical energy to produce electrical energy, There are many types of cells and these are combined in a multitude of ways to produce the many battery types in use. Batteries are divided in to primary and secondary: Primary batteries – have an irreversible......Read More..

By Steven McFadyen on Sunday, April 08, 2012

Electric Motors


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 added to the site....Read More..

By Steven McFadyen on Wednesday, March 28, 2012

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