It’s not difficult to forget the difficulties of data centers or office buildings’ low-voltage riser jackets wiring needs. A lot of people are not aware of what is known as the National Fire Protection Association (NFPA). Think that any cable will suffice to fulfill their requirements. Instead of checking whether their cables meet the requirements in the National Electrical Code (NEC or NFPA 70).
When making plans and budgets for the installation of a new cable or hiring a low voltage cable contractor, companies should be aware of different ratings of cables listed in NEC. CL/CM cables, CMP cables, and CMR cables, also known as a general-purpose/residential, communications plenum, and communications riser, are examples of these grades.
It is important to keep in mind that CL/CM CMP, as well as CMR designations, are only referring to the cable’s “jacket” rating and fire-resistant properties. They don’t affect the data transmission capabilities of the cable. To meet fire safety standards the majority of commercial spaces will require riser-rated or plenum cables. To conclude, many people are confused as to the difference between plenum or riser cables.
Plenum, What Exactly?
To understand the concept of plenum cabling you need to first understand the definition of the plenum. “A Plenum is a separate space used to circulate air for heating, ventilation, and cooling,” in a medium article. These rooms could be utilized to supply air into the HVAC and cooling (HVAC) system in the building.
All materials that are placed into a plenum that includes cables must be certified for the specific location, particularly. Because the smoke from burned cables can easily be absorbed through the system of HVAC and spread all over the structure.
Specifically, What is a Riser?
Risers jackets are tunnel that runs vertically or a series of rooms inside the structure that allow important utilities such as water supply lines, electrical conduits lines, and cable for communications to be distributed vertically. The riser for communications cables could be a separate space on each floor or shared together with electrical equipment.
The space is self-contained in any circumstance and isn’t used to recirculate air into its HVAC system. Therefore, the fire-resistance requirements for the materials used in these rooms are not as strict as the requirements for plenum spaces.
Plenum Cabling What is?
In accordance with an NFPA’s NEC standards Plenum cabling is called CMP. This is a cable that has a jacket out of polyvinyl chloride (PVC) as well as fluorinated polymer ethylene (FEP). In terms of cat6 cable specifications, the materials mentioned are fireproof and produce lesser harmful pollutants than traditional polymers made of plastic.
Plenum cables serve to transport wires across the plenum space. Since they are constructed with higher quality, Cat6 Plenum Black cables are more resistant to fire than riser cables.
Riser Cabling What is?
Cables for riser jackets are described in the National Electrical Code (NEC). as the type of cable that meets the requirements of fire resistance to be used in an upward riser, or in a non-plenum setting. Ducted-return cooling and heating system. As an example, is an illustration of this, where different pipes are used to recycle air into the system.
Instead of utilizing the entire space above the ceiling drop in the case of fire, this can help keep toxic gases and smoke from spreading through the HVAC system because of burning cables (or falling ceiling tiles). Cat6 riser cables are suitable for use across floors with no plenum and for installations in homes.
They can be used outdoors since they don’t adhere to strict safety regulations. They are manufactured from high-quality and low-smoke-producing substances. To make quick and simple installation, Cat6 Plenum Red cables are ideal for indoor use.