Plenum & Shielded Wire & Cable for Communicating and SignalsPlenum cable is cable that is laid in the plenum spaces of buildings. The plenum space is typically used to house the communication cables for the building's computer and telephone network. A shielded or screened cable is an electrical cable of one or more insulated conductors enclosed by a common conductive layer. The shield may be composed of braided strands of copper (or other metal), a non-braided spiral winding of copper tape, or a layer of conducting polymer. The shield acts as a Faraday cage to reduce electrical noise from affecting the signals, and to reduce electromagnetic radiation that may interfere with other devices.
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