Comments
en.wikipedia.org/wiki/Plenum_cabling
Posted by crouse
www.springerlink.com/index/m5511g2684317j74.pdf -
Posted by crouse
Basically it used for HVAC(heating, Ventilation & air conditioning) purposes & plenum is hidden space within a building.
for more info see following link.
http://cableorganizer.com/articles/plenum-cable.htm
Posted by Hash007
According to Microsoft
Coaxial cable containing special materials in its insulation and cable jacket certified to be fire-resistant and which produce a minimum amount of smoke in order to minimize poisonous chemical fumes.
Posted by mrleo99098
Cable that is run in the plenum spaces of buildings. In building construction, the plenum (pronounced PLEH-nuhm) is the space that is used for air circulation in heating and air conditioning systems, typically between the structural ceiling and the suspended ceiling or under a raised floor. The plenum space is typically used to house the communication cables for the buildings computer and telephone network(s).
Posted by sagitraz
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