CMP Plenum Multi-Pair Electronic Wire (EPS—Each pair Shielded)
Multi-Conductor Plenum Each Pair Shielded (EPS)
A plenum cable is a cable specifically made for use in the plenum spaces in buildings. What makes this cable special is its construction. This cable is made of fire retardant plastics which will keep the conductors safe in case of fire breakouts. The shielded multi-conductor plenum cable is often used for HVAC systems like air conditioning systems which hit high temperatures and electrical circuits around highly volatile systems.
The construction of plenum cables is regulated under the provisions of National fire protection standards NFPA 90A. All the materials used for the development of this cable have to undergo rigorous tests and only those which meet the fire safety tests standards stipulated by NFPA 262 and NFPA 90A are used for the shielded plenum cables.
Key features of the TC Shielded Cable
• Rope layby stranding in accordance with ASTM 173
• Ripcord and Sequential Footage Marking
• Low Smoke PVC jacket
• PVC Jacket
• Polyethylene insulation
• Aluminum Mylar overall shield
• Copper drain wire
• Multiple color coded conductors
Multi-conductor plenum shielded cable has many conductors. It can have as many conductors as per the needs of your project. The standard version comes with four color-coded conductors so you can be sure to find a plenum cable that’s a perfect fit for your wiring needs. The conductors are either of solid copper or stranded as perASTM B-3, B-8, and B-286. The stranded version has fine wires woven together in rope layby. Stranding increases the surface area for transmission of power, improves ductility, enhances flexibility and reduces internal resistance of the cable.
The multi-conductor plenum cable has each of its conductors insulated with polyethylene. This insulation is important because it keeps the conductors safe from many industrial impacts that could adversely affect the transmission of the cables. Polyethylene is used because it is resistant to abrasive impacts as well as deteriorations caused by weather, moisture, water, chemicals, sunlight and torsion. Despite its sturdiness, polyethylene is very flexible so the cable can be folded with ease without insulation developing lines of weakness. Moreover, polyethylene is a non-conductor which keeps the cable handler safe from electrical shocks whenever he has to come into contact with the cable as it transmits power. The insulation will ensure optimal protection within a temperature range of 0°C to 75°C.
Fire retardant plastics are often used for jacketing plenum cables. This plenum cable comes with a Polyvinyl chloride jacket which is thick and sturdy. Plenum spaces in buildings are high impact environments which call for strong cable jackets that can withstand the heavy impacts associated with heavy duty environments.
However, the most important attribute that makes this jacket a good pick for the plenum cable is because it is an effective fire retardant. A fire retardant is a material that melts into a hard incombustible solid in the presence of fire. In this way, the retardant protects the conductor for fire damages so that the conductor continues to transmit power even in fire. The formulations for the manufacture of jackets for plenum cables are very stringent and have to be approved by a number of international standards organizations before the ultimate product is certified for use in building plenums.
Multi-conductor plenum cable has a ripcord for advanced convenience in cable removal. A ripcord is a parallel yarn often strategically located under the cable jacket to help with the stripping of the cord. It also has a sequential footage marking which makes it easy to terminate the cable at regular intervals.
Flow of current comes with an associated electromagnetic flux. This electromagnetic flux causes interference to the flow of current and this can cause fluctuations in power supply which is not good for any circuit. The multi-conductor plenum cable has a Mylar overall shield with tinned copper all round it to prevent the electromagnetic noise/interference.
Copper conductors accumulate a lot of charges as current flows through them. These charges are dangerous because they can shock cable handlers so the charges have to be drained for safety reasons. In the case of the multi-conductor shielded plenum cable has a tinned copper drain wire which conducts the charges to the ground.
Approvals and certifications
User safety is the first and most important factor every cable producer has to put into consideration. That is why the international community has put in place many standards organizations to regulate the production and approval of cable products. This multi-conductor plenum cable is approved and certified as per the following standards organizations:
• UL Type CMP/MPP/CL3P / cUL Type CMP/FT6
• NEC Article 725 & 800
• California State Fire Marshall
Multi-conductor plenum cable is highly specific to its application. It is made for wiring plenum spaces in commercial buildings. Here are some of the most common ways it can be used:
• Power limited circuit and communication cable for plenum applications.
• Remote Control, Signaling, Security Systems, Communications, Intercom/P.A. Systems, Sound/Audio, and Nurse Call.
The cable is available for purchase at Nassau National Cable. The minimum cable length you can buy is one foot and the maximum you can purchase is a thousand feet. The properties can be customized to meet the unique needs of your project on request.