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The Book of Terms

The Book of TermsThe WJI Book of Wire & Cable Terms: an interactive experience of learning and sharing
This book, written by industry volunteers and containing more than 5,000 entries, is an asset for newcomers to wire and cable.

At the same time, it also represents an opportunity for industry veterans to give back by either updating or adding to the more than 5,000 entries. This is an honor system process. Entries/updates must be non-commercial, and any deemed not to be so will be removed. Share your expertise as part of this legacy project to help those who will follow. Purchase a printed copy here.

   

 

All   0-9   A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Garrett Mill

A rolling mill concept for copper rod designed by William Garrett. It features a drive designed to compensate for the variances between the roughing and finishing mill stands.

Gas Cyaniding

See Carbonitriding.

Gas-Filled Cable

A type of internal pressure cable with pre-impregnated paper insulation. The cable has sufficient space within the insulation to allow free passage of gas without the need for a clearance between the core and the metal sheath.

Gas-Filled Pipe Cable

A pipe cable in which the pressure medium is an inert gas having access to the insulation.

Gasoline Resistant Wire

Wire with an insulating material resistant to gasoline. The designation indicates a conductor with a jacket of extruded nylon suitable for exposure to mineral oil, liquid gasoline, and gasoline vapors at ambient temperature.

Gassing

Caused when gas diffuses into wire during annealing; also occurs in casting. Unsoundness caused in Tough Pitch Copper by heating in an at­mosphere containing hydrogen. See Steam Pocket.

Gauge

1) A numerical system that designates nominal wire diameter. The various standards in use (e.g., American Wire Gage (AWG), the United States Standard Gage (USS), Galvanized Sheet Gage (GSG), the Birmingham Wire Gage (BWG), etc.) are arbitrary in nature and differ between ferrous and nonferrous wires. 2) An instrument used to measure diameter or length. 3) An aid for visual inspection, which enables the inspector to determine more reliably whether the size or contour of a formed part meets dimensional requirements. Sometimes spelled as gage.

Gauge Length

The original length of a sample that is measured to determine strain, change of length and other characteristics.

Gauss

The CGS electromagnetic unit of magnetic induction.

Gear Train

A set of gears, which are incorporated into a wiredrawing machine to establish the desired speeds for moving the product.

Gel

A small amorphous resin particle that differs from its surroundings by being of a higher molecular weight so that its processing characteristics differ to such a degree that it is not easily dispersed into the surrounding resin.

General Purpose Circuit

A 120V circuit installed into a residence in order to supply power to wall receptacles and lighting fixtures.

Geometric Factor

A parameter used and determined solely by the relative dimensions and configuration of the conductors and insulation of a cable.

Geophysical Cable

Cable used in exploring for underground oil deposits.

Germanium

Element, chemical symbol Ge. A grayish-white metal, chemically similar to tin, that is obtained from the processing of copper and zinc. It is used in the production of infrared glasses, fiber optics, electronic detectors and semiconductors.

GG

Designation for ground to ground.

Ghost Line

A segregated streak on the surface of a section of the product, usually con­taining sulfide, phosphide and/or oxide, that is lower in carbon than the surrounding material.

Gigabit per second (Gb/s)

Transmission rate of one billion bits per second.

Gigahertz(GHz)

A unit of frequency equal to one billion hertz.

Gilbert

A unit that can be used to quantify magnetomotive force (magnetic potential), which relates to magnetic fields.
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