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plenum cable
(redirected from Riser cable)

    Also found in: Wikipedia 0.01 sec.
plenum cable
Cable that is suitable for running in air ducts and spaces between the floor and ceiling. It uses a fire retardant coating that must comply with local building codes. See plenum.
plenum cable
A jacket having low flame- and smoke-producing properties; specifically de-signed for use in the plenum, 1 formed by the space between a suspended ceiling and the structural floor above; such space often is used for return air in a heating and/or cooling system in a building.
(hardware)plenum cable - Cable that can be (legally) installed in the plenum (the space between a ceiling and the floor above it). Such cable is (usually) teflon-coated so that it will not give off toxic fumes when burned. In some parts of the world such cable is required by law.
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