What Does Cm Rated Cable Mean

In the case of cm the standard outlines general use or use in cases where the fire code does not place any restrictions on cable type.

What does cm rated cable mean.

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. They can be installed anywhere except plenums. 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.

Another common cable rating is cm which denotes communications cable such as cat 5e or cat 6 networking cable. Cmr cable often called riser rated cable is constructed to prevent fires from spreading floor to floor in vertical installations. Cat simply stands for category. Do you know what these terms really mean and which one does your project actually need.

This is the next step up. These are used for regular networking from room to room as long as the cable does not need to pass through an air duct. What does cat mean. When shopping for cables you may notice they re nearly always classified as cat 5 cat6e or something similar.

Among all these terms cm cmr and cmp are the most common ethernet cable ratings specified by the national electric code nec.