The Book of Terms

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The Book of Terms The 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.

Contains Begins with Exact Sounds like

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

Clearance

The vertical space between a cable and its conduit.

Clearing Time

The time from sensing an overcurrent to circuit interruption.

Cleavage Fracture

A fracture, usually of a polycrystalline metal, in which most of the grains have failed by cleavage, resulting in bright reflecting facets. It is one type of crystalline fracture and is associated with low energy brittle fracture. Contrast with shear fracture.

Clinched Wire Through Connection

A connection made by a wire which is passed through a hole in a printed circuit board, and subsequently formed, or clinched, in contact with the conductive pattern on each side of the board, and soldered.

Clipping Machine

A machine for clipping together by means of wire the pockets of interior spring mattresses, each spring being attached to the next by a circular clip or ring of wire.

Clock Cable

Cable of specific impedance and electrical characteristics used to distribute the clock (master) frequency where needed in digital computers.

Clock Spring

A spiral spring with concentric coils lying on the same plane, made from flat section material, usually strip material in 0.95 to 1.15 percent carbon steel.

Close Tolerance

Any special tolerance that is closer than standard.

Closed Butt Taping

See Taped Insulation.

Closed End Splice

An insulated splice in which two or more wires overlap and enter the splice from the same end of the barrel.

Closer

A term sometimes used for any type of twisting machine used to assemble elements into a unit, i.e., wires into cables or strands into a wire rope. Closers are often of the planetary, buncher or drum twister type.

Closer Reels

Used in the wire rope trade, similar to laying up reels. See reels.

Closet, Telecommunications.

An enclosed space for housing telecommunications equipment, cable terminations and cross-connect cabling. The closet is the recognized location of the cross-connect between the backbone and horizontal facilities.