| T |
| Tape Wrap |
Tape spirally applied over wire |
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| Temperature Rating |
The maximum and minimum temperature at which an insulating material may be used in continuous operation without loss of its basic properties |
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| Tensile Strength |
Pull stress necessary to break a given specimen |
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| TEW |
Canadian Standard Association type appliance wires |
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| TFE |
Tetrafluoroethylene. A theromoplastic material with good electrical insulating properties and chemical and heat resistance |
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| Thermocouple |
Device consisting of two dissimilar metals in physical contact |
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| Thermocouple Extension Cable |
Cable comprised of one or more twisted thermocouple extension wires under a common sheath |
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| Thermocouple Extension Wire |
Pair of wires of dissimilar alloys having such EMF-temperature characteristics complimenting the thermocouple which is intended to be used that when properly connected allows the EMF to be faithfully transmitted to the reference junction |
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| Thermocouple Wire (Grade) |
Pair of wires of dissimilar alloys having EMF-temperature characteristics calibrated to higher levels than the extension type of thermocouple wire |
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| Thermoplastic |
Material that softens when heated or reheated and becomes firm upon cooling |
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| Thermoset |
Material which hardens or sets by heat, chemical or radiation cross-linking techniques and which once set cannot be resoftened by heating |
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| THHN |
Nylon jacketed building wire |
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| Tinned Copper |
Tin coating added to copper to help in soldering and slow down corrosion |
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| TPE |
Thermoplastic Elastomer |
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| Tray |
A cable tray system in a unit or assembly of units made of non-combustible materials shaping a rigid structural system used to support cables |
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| Tray Cable |
A multiconductor or multipair control, signal or power cable explicitly approved under the National Electrical Code for installation in trays |
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| Triaxial Cable |
Cable construction having three coincident axes, such as conductor, first shield and second shield all insulated from one another |
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| Triple |
Cable possessing three insulated single conductors twisted together |
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| Tubing |
A tube of extruded non-supported plastic or metallic material |
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| Twisted Pair |
Two lengths of insulated conductors twisted together |
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| U |
| UL |
Abbreviation for Underwriters Laboratories, a non-profit organization that operates a listing service for electrical and electronic materials and equipment |
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| UTP |
Unshielded Twisted Pair cable |
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| V |
| VDE |
German Society of Engineers that establishes standards and testing requirements |
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| Volt |
A unit of electromotive force |
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| Voltage |
Term most often used in place of electromotive force, potential, or potential difference to denote the electric pressure existing between two points |
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| Voltage Drop |
Voltage generated across a component or conductor by the current flow through the resistance or impedance of the component or conductor |
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| Voltage Rating |
Highest voltage that can be continuously applied to a wire in conformance with standards or specifications |
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| VW-1 |
Flammability rating created by Underwriters Laboratories for wire and cable that pass a specially designed vertical flame test |
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| W |
| Wall Thickness |
The thickness of an insulation or jacket |
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| Welding |
Joining the ends of two wires or groups of wires |
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| Wire |
A slender rod or filament of drawn metal |
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| X |
| XHHW |
High temperature cross-linked polyethylene jacketed small diameter building wire |
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| XLP |
Cross-linked polyethylene |
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