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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

Inhibitor

A material that prevents or delays oxidation and galvanic action on a connector surface, or the interface of different conductors. Also, a chemical compound, inorganic or organic, which is added to the pickling bath for the purpose of retarding the chemical action of the acid on the steel, while allowing it to continue on the iron oxides and scales until they are dissolved or removed, and the steel surface is perfectly clean. They also assist in preventing hydrogen embrittlement.

Initial Creep

The early part of the time-elongation curve for creep in which extension increases at a rapid rate. Also called primary or Stage I creep.

Initial Tension

Force that keeps closed the coils of an extension spring, and which has to be overcome before the coils will open.

Ink, Marking

See Marking or Coating Inks.

Inlet Die

See Die, Wiredrawing.

Inlet Wire

The wire entering the first die of a drawing machine.

Inner Wires

All wires of a strand except surface or cover wires.

Inorganic

Composed of matter other than animal or vegetable, such as earthy or mineral matter.

Insect Screen Wire

. A low carbon hard drawn wire with a finish suitable for electro-galvanizing or painting of the woven cloth. May be bright, coppered or galvanized.

Insertion Loss

A measure of the attenuation of a device by determining the output of a system before and after the device is inserted into the system.

Insertion Tool

A small, hand-held tool used to insert contacts into a connector.

Inside Plant (ISP)

All cable and equipment inside a central office or subscriber’s premises.

Inside Wire

Wire designed to carry a telephone circuit(s) through the customer’s premises.

Inspection

To examine carefully and determine if material or product meets specifications.

Inspection, Eddy-current

Technique used to inspect the surfaces of the rod during the rolling process. Typical defects such as cracks, surface inclusions, slivers and laps can be spotted before coiling.

Inspection, Ultrasonic

An inspection conducted on rods, tubes, etc., while they are online. Typical defects such as cracks, surface inclusions, slivers and overlaps can be spotted before coiling or subsequent drawing operations.

Instantaneous Value

The value of a variable quantity at a given instant.

Instrumentation Cables

Family of cables that includes a broad range of electronic cables that connect two or more instruments. Instrumentation cables must be electronically compatible with the type of measuring instrument and recording device used. Typically, they consist of a twisted pair of individual conductors inside an overall jacket.

Insulated

Separated from other conducting surfaces by a non-conducting substance.

Insulating Joint

A device that mechanically couples and electrically insulates the sheath and armor of contiguous lengths of cable.
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