Plenum rated cables have a higher fire rating for both commercial and residential use. Plenum-rated cables are good products and are able to withstand severe environments. Because plenum cables are built to a higher fire resistance standard than riser cables, plenum cabling is This is because a conduit stops most fires and prevents smoke from a burning cable from getting out. May 31, 1999. Should we use plenum or riser rated cables? While it's definitely acceptable to use plenum-rated cable in your home to install a signal booster, a WiFi network, or something else, more often than not, its not necessary. They come with plastic or metal protection over individual conductor insulations. As a cell signal booster installation professional, you must always choose plenum-rated cable when cabling is being run throughout plenum spaces of buildings, including air As weve Listed plenum signaling raceways shall be permitted to be installed in other spaces used for environmental air as described in 300.22 (C). In a plenum you need special cable jackets that can't burn nor produce toxic Why use plenum rated cable? Plenum rated (CMP) cable has an outer jacket made of fire-resistant material like Teflon to prevent fire from spreading. When a fire happens, plenum rated cable is designed to: Restrict flame propagation to no more than five feet Limit the amount of harmful smoke released Self-extinguish Using plenum rated cable is required in on plenum ceiling environment. Q: As cabling contractors, we run into requests for proposals that require plenum or polyvinyl chloride (pvc) Because ordinary cabling introduces a toxic hazard The requirements for what type of cable must be used for a given application can vary a little bit from place to place When running cables within plenum spaces, plenum cables are a must. Plenum cable / p l n m / is electrical cable that is laid in the plenum spaces of buildings. especially for communications, such as local area network(LAN). Benefits or advantages of Plenum cable. Following are the benefits or advantages of Plenum cable: It has fire resistant characteristics with low smoke. It slows down spread of flames as mentioned above as it is self extinguishing cable type. It can be installed in very less space and hence allows space for air circulation to be used by HVAC system. The first step to understanding what plenum cables are is understanding what plenum space is. Plenum space is the part of many buildings and offices, which provides circulating air space. This can be used for air conditioning and heating systems. Plenum spaces also provide the ideal area to place telephone and communication cables for a building. This included all communications, security, As a result, if one runs cable through air-filled spaces (like air ducts, or areas above ceiling tiles that are part of the air distribution system), not through conduit, plenum cabling by National electrical Code NEC if youre installing any cabling in plenum areas. Requirements for plenum- and riser-rated cable. For large public spaces like hospitals, schools, and airports, Plenum cables must self extinguish and not reignite. They also produce less smoke than traditional PVC cables. The smoke and fumes are toxic. Riser (CMR) Rated Cable Comples with UL-1666. Defined for usage in vertical tray applications such as cable runs between floors through cable risers or in elevator shafts. These spaces cannot be used for When cables are needed in the air ducts, plenum Most residential Only Type CL2P or CL3P cable shall be If there is no sheet metal duct; just the open ceiling or wall space, This means that call cables installed in the plenum space must be plenum rated. From hot heaters in the winter to cold A/C systems in the summer, having high-quality, durable cables is necessary for keeping the people within the building safe from fire risks In the United States , plastics used in the construction of plenum cable are regulated under the Plenum provides plenty of routing space as well as providing easy Building codes require that plenum-rated cables pass tests for low flammability (they stop burning as soon as theyre no longer exposed to a direct flame) and low smoke production. Most building codes mandate that only plenum-rated (CMP) cable be used in plenum spaces and air ducts. In commercial settings such as schools or office buildings, the plenum space is often used to house connecting communication cables.

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