A cable designed to be used in conjunction with insulators, for overhead distribution, and with heavy covering, which reduces faults due to the touching of tree limbs in heavily wooded areas.

A series of tiny (less than .0254 mm/0.001-in.) hollow channels that are formed in insulation and precede insulation failure. This type of problem is of great concern for the electrical utility sector as buried power cables are subjected to conditions that over time can cause treeing. There are two types of “trees”: electrical trees, which result not from exposure to water but from high electrical stress in a short period of time and having a measurable corona discharge; and electrochemical trees, which are caused over a long period of time by exposure to water and/or cable imperfections with no measurable corona discharge.

A group of three insulated conductors twisted together with or without a sheath overall. Usually color-coded for identification. Two or more units are cabled to form a multi-triad cable. See Triplex Cable.

See Configuration, Triangular.

A three-conductor cable with one conductor in the center, a second circular conductor shield concentric with the first and a third circular conductor shield insulated from and concentric with the first and second, usually with insulation, and over a braid.

Noise generated in a shielded cable due to variations in capacitance between shielding and conductor as the cable is flexed. Static electricity that is generated when the cable is flexed is one such source under these conditions.

A chlorinated solvent for degreasing. It is clear, colorless, non-inflammable liquid that boils at 87°C (189°F). Its use requires especially careful handling, as with all chlorinated solvents and industrial chemicals.

One of the many techniques used to cool the product and equipment during the continuous casting operation. Trickle cooling is applicable to cooling the belt to prevent overheating.

A cable composed of three insulated single conductors and often one bare conductor, all twisted together. The assembled conductors may or may not have a common covering of binding or protecting material. Also called a Triad.

A cable composed of either three insulated single-conductor cables twisted together or two insulated single-conductor cables twisted together with a bare conductor or messenger.

Medium carbon quality steel wire, finished in various sizes and extreme­ly flexible. Also employed in rope form for various operations.

Designation for a 125V, 343°C (650°F) wire. It is constructed with a stranded nickel-clad conductor, glass braid, or tape, impregnated felted asbestos and asbestos braid.

Designation for Tough Rubber Sheathed (cables).

A stranded wire or twisted cable in which each successive layer of helically laid wires has a reversed direction of lay from the preceding layer and an increasing lay length.

In telecommunication or CATV systems, the transmission cable from the head end (signal pickup) to the trunk amplifier. Used to feed individual distribution areas, villages, towns or clusters of service customers. The primary design requirements are low attenuation and good signal transmission capability.

A feeder that connects two generating stations or a generating station and an important substation.

Designation for: 1) Two or three-conductor rubber insulated and jacketed tinsel cord. Light duty, attached to an appliance of 50 W or less. For use in damp places in short lengths (less than 3 meters. 2) Tensile Strength.

Designation for tinsel cord that is similar to Type TS, but with neoprene jacket, 125V.

Designation for similar to TS, but all thermoplastic-insulation and jacket.

Designation for polyvinyl chloride insulation and sheath, aerial and duct.