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The Book of Terms

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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

Hook-Up Wire

A single insulated conductor used for low current, low voltage (usually under 600V) applications within enclosed electronic equipment.

Hoop

Special quality flat rolled steel product developed to meet the requirements of the cooperage industry in the manufacture of barrels, pails and kegs. It is furnished in black or galvanized, in cut lengths or coils as specified.

Hoop Wire

Mild steel wire with a medium hard finish.

Horizontal Cabling

The wiring/cabling between the telecommunications outlet/connector and the horizontal cross-connect.

Horizontal Cross-Connect

A cross-connect of horizontal cabling to other cabling, i.e. horizontal, backbone, or equipment.

Horizontal Stripe

A colored stripe running horizontally with the axis of a conductor, sometimes called a longitudinal stripe, used as a means of circuit identification.

Horizontal-Vertical Arrangement

A technique where the stands of a rolling mill operation are alternately on horizontal and vertical roll shafts. These are usually designed so that all roll and pinion housings are basically the shaft settings alternate.

Horsepower

A unit of power; it equals 33,000 ft-lb/min. or 746 watts. See Watt.

Hose Armoring Wire

Round, flat or half-round wire in various sizes, with a galvanized finish in hard or soft mild steel and high tensile steel used to reinforce hoses.

Hose Reinforcement Braid

Basket-weave braided reinforcement around rubber hose, which has to withstand internal pressures, that is weaved from hard drawn high carbon steel wire.

Hosed Wire

High quality medium-carbon steel wire used in making healds that form part of the harness on a weaving loom. Twin heald wire is made of two iden­tical wires joined together along their length by tin.

Hot

Connected, alive, energized. Said of wire, terminal or any underground conductor.

Hot Conductor

The ungrounded phase conductors of an electrical system connected to the circuit breaker or fuse.

Hot Dip

A term denoting the coating of a wire surface by means of dipping it into, or pulling it through, a molten bath of the coating material.

Hot Fluxing

Technique used to introduce resin and ingredients to a ribbon blender or similar mixer of either high or low intensity. This is one of the oldest compound techniques to make resin coating material for insulating wire.

Hot Forming

Working operations such as rolling, bending and drawing sheet and plate, forging, pressing, and heading, performed on metal heated to temperatures above the recrystallization temperature.

Hot Modulus

Stress at 100 percent elongation after 5 minutes of conditioning at a given temperature, normally 130°C (208°F).

Hot Quenching

A process of quenching in a medium at a temperature substantially higher than ambient temperature.

Hot Rolled

Hot rolled products are those that are rolled to finish at temperatures above the recrystallization temperature or above about half of the absolute melting point.

Hot Rolled Finish

The finish obtained by rolling metal while hot, resulting in a dark oxidized and relatively rough surface. This material may subsequently be pickled, bichromate dipped, or bright dipped, but the relatively rough surface remains.
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