Ethernet: The Definitive Guide by Charles E. Spurgeon & Joann Zimmerman

Ethernet: The Definitive Guide by Charles E. Spurgeon & Joann Zimmerman

Author:Charles E. Spurgeon & Joann Zimmerman
Language: eng
Format: epub, pdf
ISBN: 9781449361846
Publisher: O’Reilly Media, Inc.
Published: 2014-04-08T16:00:00+00:00


Plenum cable identifiers

The National Electric Code (NEC) provides identifiers for communications wires and cables:

CMP

Cables with a CMP identifier are plenum-rated and are suitable for installation in ducts and plenums without the use of conduit. These cables are designed for fire resistance and low smoke-producing characteristics.

CMR

Cables with a CMR identifier are not plenum-rated. However, they are engineered to prevent the spread of fire from floor to floor and are suitable for riser use and vertical shaft applications.

CM

Cables with a CM identifier are specified for general-purpose building wiring use, in areas other than plenums and risers.



Download



Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.