HelixNet: What is Plenum rated cable and are there Plenum versions for HelixNet products?
Plenum Cable
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). However, use of plenum areas for cable storage poses
a serious hazard in the event of a fire as once the fire reaches the plenum space there are few barriers to contain the
smoke and flames. Plenum cable is coated with a fire-retardant coating (usually Teflon) so that in case of a fire it does
not give off toxic gasses and smoke as it burns. Twisted-pair and coaxial versions of cable are made in plenum versions.
In the HelixNet user manual, Belden 9207, Belden 9463 are shown as recommended cable types. These are not plenum
rated, but the spec sheets do call out plenum rated versions Belden 89207 and Belden 89463.
Belden 1533p is a CAT-5 cable that is plenum rated.
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). However, use of plenum areas for cable storage poses
a serious hazard in the event of a fire as once the fire reaches the plenum space there are few barriers to contain the
smoke and flames. Plenum cable is coated with a fire-retardant coating (usually Teflon) so that in case of a fire it does
not give off toxic gasses and smoke as it burns. Twisted-pair and coaxial versions of cable are made in plenum versions.
In the HelixNet user manual, Belden 9207, Belden 9463 are shown as recommended cable types. These are not plenum
rated, but the spec sheets do call out plenum rated versions Belden 89207 and Belden 89463.
Belden 1533p is a CAT-5 cable that is plenum rated.
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