Cable Size

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SENTNATH said:
What does it mean MCM when you refer to cable size
MCM means thousand circular
mills. A circular mil is a unit of area equal to that of a circle 1 mil in
diameter. obvious really ! :LOL:
 
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a mil being more usually known (this side of the pond) as a thou - ie. a thousandth of an inch.
 
the standard unit of size in most cases is the mil foot, a wire will have a unit size if it has a diameter of 1 mil and a length of 1 foot.
its found in American and English wire tables,avoiding decimals.
 

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