Cm Vs Cmr Rated Cable

Cm rated cables are designed for general use.

Cm vs cmr rated cable. Cmr cable often called riser rated cable is constructed to prevent fires from spreading floor to floor in vertical installations. These cables do not spread flame to the top of a tray in the vertical tray flame test descri bed in the ul 1865 standard. These ratings are very similar to the previously discussed cl2 cl3 and plenum but are given specifically to network cables due to their lower wattage. Cmp in their applications.

Understanding cable jacket ratings. Cmp is higher rated than cmr. Which one to choose. As the flammability requirements for cmp cables are stricter than cm and cmr cables cmp cables can be used as a substitute in any area where cm and cmr would be required.

In commercial buildings a riser is the. Cm rated cables that are designed for general use won t be covered in this article. Cm cables share the same values as cl2 and cl3 cables in that they are most often accepted for simple in wall installation. Cl cm cmr and cmp so you need some cable to run for a new ethernet or home theater in your home and you know exactly what type and length of cable you need 50 feet of cat6 cable 15 feet of high speed hdmi cable whatever it might be.

As a general rule cm and cmg cables are suitable for installation in cable trays and other non plenum non riser areas. 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. In this blog post we ll do a quick break down on the big three networking cable jacket ratings. Cmp cl3p cl2p cmr cl3r cl2r cm cmg cl3 cl2 cmx cl3x this white paper is for informational purposes only and is subject to change without notice.

It s important to know the differences between cm cmr and cmp cables because each different type is used is difference locations. These terms are the most common cable jacket ratings specified by the national electric code nec. These are the types of cables that you. Cmr riser cable that is suitable for use in a riser application.

As the flammability requirements for type cmr cables are stricter than. Ethernet cable jacket rating comes in a variety of different types and materials. Let s see the difference between cmr vs. Introduction of cmr vs.

Cm is the most basic cable jacket rated for general use. The cm cmr designations refer to the fire ratings of the cable. Cmr cable stands for communications multipurpose cable. Cablek makes no guarantees either expressed or implied concerning the accuracy completeness or reliability of the information found in this document.

Cmr riser rated cable which maintains a higher fire rating than cm cable to prevent fire from spreading between floors suitable for vertical or riser applications less typical application for a patch cable. Cm cmr and cmp are ratings given to our network cables.