Plenum by definition means an air filled space in a structure. Most buildings today feature drop ceilings which accomodate lighting fixtures, heating and air conditioning ducts, as well as wiring for electrical systems such as communication, alarm and security circuits. This space above the ceiling is commonly used for return air and ventilation systems and is referred to as a "plenum". Current electrical codes mandate that wires installed into this space must either be installed inside a metal conduit or else be made of materials which have low smoke and fire resistant qualities. Plenum cables are an attractive option to contractors as they eliminate the need to handle awkward conduit as well as providing an economical alternative to the traditional methods.
Deca's plenum cables are all verified at either ETL or UL laboratories to ensure that the necessary specifications are meet. Testing to CSA FT6 Horizontal Flame and Smoke Test per CSA C22.2 No 0.3-92 Appendix B and in accordance with ANSI/NFPA Standard 262 (UL910) that states a maximum flame spread of 1.5 meters, peak optical density of emitted smoke is less than 0.5 and maximum average optical density is 0.15.
Deca can produce plenum cables using either fluoropolymer materials such as FEP, Tefzel, and Kynar, or more commonly using copolymer blended PVC/PVC combinations. In addition to the low smoke and fire resistant qualities, our cables have excellent electrical properties as well. Please see the related pages listed in the sidebar to the left for product specifications.