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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.


 

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

Friction Tape

An insulating tape made of asphalt-impregnated cloth.

Frictional Heat

Heat generated at the stock surface and within the stock as a result of frictional contact with the tool or die.

FRMR

Designation for flame retarding, moisture-resisting finish.

Front Barrel Flange

A flange at the end of the barrel to which the die or adapting member is fastened.

FRP

Designation for Fiberglass Reinforced Plastics.

FSCV

Designation for liquid salt continuous vulcanization.

FT1

Designation for one of several CSA flame test designations for wires and cables that pass the C22.2 No. 0.3 test requirements. (Other designations include FT2, FT4, etc.)

FTP

Designation for Foiled Twisted-Pair Cable. This cable type has twisted insulated copper conductors within a foil shield and having a drain wire bound in a single sheath to protect the cable from electromagnetic interference.

FTQ

Designation for Foiled Twisted Quad Cable. This cable type has two individual groups of four twisted conductors covered by a foil shield.

Fuel Cell

A cell that can continuously convert chemical energy to electrical energy.

Full Annealing

See Annealing, Full.

Full Braid

One made of single material as opposed to one of a mixture of materials.

Full Duplex

A characteristic of a network protocol in which there may be simultaneous data transmission in both directions and on multiple pairs in a cabling system.

Full Hard

A temper corresponding approximately to a cold-worked state beyond which the material can no longer be formed by bending. In specifications, a full hard temper is commonly defined in terms of minimum hardness or minimum tensile strength (or alternatively, a range of hardness or strength) corresponding to a specific percentage of cold reduction following full annealing.

Fume Extraction

A method of removing fumes that is especially necessary in the pick­ling shop to give proper working conditions and to prevent structural corrosion. Systems can be: lip-type, where fumes are extracted by trunking, which rests on the sides or lip of the bath or baths and does not interfere with the entry or removal of the work from the bath; by fans placed above and to one side of the tank to form an invisible barrier of clean air; and by completely enclosing the cleaning line in what is vir­tually a building within the main building.

Fungus Resistance

The ability of a conductor or cable assembly to resist physical or electrical degradation caused by fungus growth in wet or damp environments.

Funnel Entry

A flared or widened entrance to a terminal or connector wire barrel. This permits easier insertion of the conductor, and helps assure that all wire strands will be directed into the wire barrel.

Furnace

An enclosure in which heat is generated or enters from another heat source. This is generally done through combusting a fuel or by converting electricity to heat. In the wire industry, furnaces are typically used to increase the workability before and/or after drawing or rolling, as well as to impart other properties desirable in the end product.

Furnace Atmosphere

Gas that surrounds the material in a furnace. Generally, an atmosphere is supplied to protect the material against damage that would result if heated in ambient air. For ferrous wire, atmospheres protect against oxidation and decarburization. Some atmospheres are “inert,” protecting the material by displacing air (e.g., nitrogen). Other atmospheres are “reactive,” protecting the material by chemically reacting with the air (e.g., hydrogen). In practice, furnace atmospheres tend to be a mixture of inert and reactive components. These gas mixtures are either delivered separately in bulk and then mixed, or are generated at the site of the furnace. See Controlled Atmosphere.

Furnace, Basic Oxygen

One of two major facilities (the other being an electric arc furnace) used to produce liquid steel. A jet of high-velocity oxygen impinges on the metal and reacts with carbon and other impurities to form liquid steel. The product is tapped into a ladle and may be ladle-refined. It is subsequently strand cast directly into blooms or billets, or teemed into ingots for further working. The design is known as the Linz-Donawitz Process (see entry).

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