| Term | Description |
|---|---|
| Tank Test | A voltage dielectric test in which the test sample is submerged in water and the voltage is applied between the conductor and the water as the ground |
| Tape Shields | A shield made from various materials that normally consists of a laminate of aluminum and polyester layers joined together by adhesive |
| Tape Wrap | A spirally applied tape over an insulated or uninsulated wire |
| Tear Strength | The force required to initiate or continue a tear in a material under specified conditions |
| Technischer Überwachungsverein, English translation: Technical Inspection Association (TÜV) | TÜV America Inc., a subsidiary of Group TÜV Süddeutschland, is a business-to- business engineering services firm providing international safety testing and certification services. |
| Teflon | A DuPont company trademark for a family of fluorocarbon resins |
| Telecommunications Industry Association/Electronics Industry Association (TIA/EIA) | The Technical Committee has overall responsibility for establishing the broad technical policy of the Association, including the organization and operating policies of the Standards and Technology Department and Engineering Committees. |
| Temperature Rating | The maximum temperature at which an insulating material may be used in continuous operation without loss of its basic properties |
| Temperature Requirement | This involves both the upper and low end temperatures required for the product or environment |
| Tensile Strength | The pull stress required to break a given specimen |
| Tetrafluoroethylene (TFE) | A compound that contains flourine in molecular structure, used for both insulation and jacket and has a maximum continuous operating temperature of 260°C and intermittent operating temperature range of 316°C |
| Thermal Rating | The maximum and/or minimum temperature at which a material will perform its function without undue degradation |
| Thermal Shock | A test to determine the ability of a material to withstand heat and cold by subjecting it to rapid and wide changes in temperature |
| Thermocouple | A device consisting of 2 dissimilar metals in physical contact, which when heated will develop an EMF output |
| Thermocouple Element | A thermocouple designed to be used as part of an assemble, but without associated parts such as the terminal block, connecting head, or protecting tube |
| Thermocouple Extension Wire | A pair of wires of dissimilar alloys having emf-temperature characteristics complimenting the thermocouple which is intended to be used, such that when properly connected it allows the emf to be faithfully transmitted to the reference junction |
| Thermocouple Wire (Grade) | A pair of wires of dissimilar alloys having emf-temperature characteristics calibrated to higher temperature levels than the extension type of thermocouple wire |
| Thermoplastic | A material which softens when heated and becomes firm on cooling |
| Thermoplastic - Insulated Wire | UL (Underwriter's Laboratories) Standard 83; National Electrical Code (NEC) Article 310 of NFPA 70 |
| Thermoplastic Elastomer (TPE) or Thermoplastic Rubber (TPR) | A class of copolymers that have rubber-like attributes with the processability of thermoplastic materials, can be made highly flame-resistant |
| Thermoplastic Insulated Wires and Cables | CSA (Canadian Standards Association International) Standard C22.2 No. 75-M1983; Canadian Electrical Code, Part II |
| Thermoset | A material which hardens or sets by heat, chemical or radiation cross-linking techniques and which, once set, cannot be resoftened by heating |
| Thermoset Insulated Wires and Cables | CSA (Canadian Standards Association International) Standard C22.2 No. 38-95; Canadian Electrical Code, Part II |
| THHN | 90C, 600V, nylon jacketed building wire for dry locations |
| THWN | 75C, 600V, nylon jacketed building wire for wet and dry locations |
| Tin Overcoat (TOC) | Tinned copper wire, stranded, then coated with tin |
| Tinned Copper | Tin coating added to copper to aid in soldering and inhibit corrosion |
| Tinsel | A type of electrical conductor comprised of a number of tiny threads with a fine, flat ribbon of copper or other metal closely spiraled about it. Used for small size cables requiring limpness and extra-long flex life. |
| Topcoat | Bare (untinned) copper wire, stranded, then coated with tin |
| Topcoated Copper | Bare copper strands twisted together and a tin coating applied overall |
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