Cm Rated Cable Means

That doesn t mean that your local electrical inspector won t allow these to be installed in wall but it does raise the possibility.

Cm rated cable means.

Cm cmg are the most commonly used commercial grade communication cable. Cl2 and cl3 cable doesn t reduce smoke or gases but minimize the possibility of shock. What is cmp rated cable. Cables often have a cm cmg or cmr rating as defined by the national electrical code nec.

This is the next step up. Or cmr rated cable. They can be installed anywhere except plenums. Cmr cable often called riser rated cable is constructed to prevent fires from spreading floor to floor in vertical installations.

All of the canare cables belden 1808a and bjc yc 2 s video cable. In practice communications cable generally means network cable type cm cables are generally the minimum jacket ratings suitable for in wall installation of network cables and are appropriate for installation inside a residence or a single story commercial building. It is intended for general use within buildings in accordance with the nec article 800 53 e 1. Cm cmg communications cable for general purpose use.

Guide to cable ratings. Some of the cables we carry aren t nec rated so they re missing from the table below. Cable jacket ratings uses and substitutions when installing cabling in walls and ceilings it is important to use cables that meet the local code requirements. Do you know what these terms really mean and which one does your project actually need.

A cmr rating means the cable can be used in the risers of commercial buildings because they limit the spread of flames better than cables in the cl cm family. Among all these terms cm cmr and cmp are the most common ethernet cable ratings specified by the national electric code nec. Another common cable rating is cm which denotes communications cable such as cat 5e or cat 6 networking cable. Plenum cables are the highest standard and can safely be substituted for any other cable type such as riser cm cl2 or cl3 cables.

What do these acronyms mean and why do they matter. Such cables are limited to residential or other small applications where the number of communication cables used is very little. Often this type of cable meant for home usage will carry an x suffix signifying that it is intended for use in buildings where the cable is enclosed in a non combustible conduit. Cmx is a residential grade cable.

All of them are in practical terms suited for in wall. Local codes are typically based on the national electric code nec published by the national fire protection association.