Plenum (CMP) Rated Cable
Complies with NFPA-262 and UL-910. Only cable allowed in spaces defined as air plenums such as raised flooring systems and air handling ducts. Plenum cables must self extinguish and not reignite. They also produce less smoke than traditional PVC cables. The smoke and fumes are toxic. Plenum rate cable comes in copper plenum and bulk fiber plenum cable.
Non- Plenum , 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 environmental air. Non Plenum Riser Bulk Fiber cables must self extinguish and must also prvent the flame from traveling up the cable in a vertical burn test.
Other Cable Ratings:
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