TRAY CABLE - A factory assembled multi-conductor control, signal, and power cable specifically approved under the NEC for installation in trays.
TRIAIAD - A group of three insulated conductors twisted together with or without a sheath overall. Usually color coded for identification. Also called a triplex.
TRIAXIAL - Refers to a three conductor cable with one conductor in the center, a second circular conductor concentric with the first, and a third circular conductor insulated from and concentric with the first and second, usually with insulation, and a braid or impervious sheath overall.
TRIBOELECTRIC NOISE - Noise generated in a shielded cable due to variations in capacitance between shielding and conductor as the cable is flexed.
TRIPLEX - A group of three insulated conductors twisted and/or sheathed or held together mechanically. Usually color coded or ridge marked. Also called triad.
TUBING - A tube of extruded non supporting plastic or metallic material.
TV - Abbreviation for Television. The transmission of images by means of radio waves or wires.
TV CAMERA CABLE - A portable, flexible cable consisting of several coaxial cables and other conductors cabled together, overall shield and usually Neoprene® jacketed. It is used to carry signals between the camera and transmitter and plate and heater currents to the camera. Neoprene® is a trademark of the DuPont de Nemours Co.
TW - The UL designation for thermoplastic insulated wire for use in conduit, underground, and wet locations. It is a common building wire having a bare soft copper conductor, which may be either solid or stranded.
TWIN CABLE - A pair of insulated conductors of 8 AWG or larger, twisted or laid parallel and/or sheathed or held together mechanically under a common covering.
TWIN WIRE - A pair of insulated conductors of 9 AWG or smaller, twisted or bonded together and not identifiable from each other.
TWINAX - A shielded coaxial cable with two central conductors. Also called twinaxial.
