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1 Νοε 2021 · CMP stands for "Communications Multipurpose Cable, Plenum", it is a cable jacket fire resistance rating defined in Article 800 of the NEC. The CMP is the highest grade of ethernet jacket fire rating and complies with the UL 910 plenum test and CSA FT6.
CMP, CMR and the like are the NEC’s ratings for the outer casing or “jacket” that surrounds a cable’s internal wiring and insulation. The purpose of the jacket is to protect the wiring from physical damage, moisture, ozone and ultraviolet rays.
7 Απρ 2021 · Article 800 of the National Electric Code defines communications multipurpose cable plenum or CMP as a cable that has a fire-resistant rating jacket which may also be called a plenum-rated cable. CMP is built to restrict the spread of flame from a fire to as little as five feet or less, limiting the amount of smoke in the process.
In wrapping up, understanding CM, CMR, and CMP cable ratings is key for successful networking projects. Each type has its use—CM for general connections, CMR for walls, and CMP for ceilings and air ducts. Adhering to standards is vital for safety, reliability, and legal compliance.
10 Μαΐ 2022 · 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
20 Οκτ 2021 · What Is a CMP-Rated Cable? The CMP rating, which stands for “Communications Multipurpose, Plenum,” is the strictest of the cable jacket ratings. It designates Ethernet cables that may be used in a building’s plenum, such as a dropped ceiling, raised floor, and other air spaces.
We discuss the two competing fire ratings (CMP & LSZH) you are likely to see stamped onto an Ethernet cable jacket. This is important, as one is far more effective than the other. Read on to avoid getting burned!
