Cable Size

SENTNATH · Joined: 17 Oct 2006 Posts: 2 Location: United Kingdom

What does it mean MCM when you refer to cable size

Richardp · Posted: Tue Oct 17, 2006 7:57 am

SENTNATH wrote:

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 !

SENTNATH · Joined: 17 Oct 2006 Posts: 2 Location: United Kingdom

Thanks for your explanation.

sm1thson · Posted: Tue Oct 17, 2006 8:16 am

and dont get mills confused with mm

Richardp · Posted: Tue Oct 17, 2006 8:31 am

sm1thson wrote:

and dont get mills confused with mm

and don't get a circular mil confused with a square mil

slippyr4 · Posted: Tue Oct 17, 2006 11:36 am

a mil being more usually known (this side of the pond) as a thou - ie. a thousandth of an inch.

Richardp · Posted: Tue Oct 17, 2006 12:20 pm

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.