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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

TP

Designation for: 1) Tin Plate. 2) Parallel tinsel cord. All rubber insulation and jacket over two extremely flexible conductors. Light duty, attached to appliances of 50W or less. For use in damp places in lengths of less than 3 meters.

TP-PMD

Designation for Twisted Pair, Physical Media Dependent, a data network protocol.

TPA

Designation for a 125V, 400°C (752°F) wire. It is constructed with a stranded tinned conductor, glass braid or tape, impregnated felted asbestos and asbestos braid.

TPC

Designation for Triple Paper Covered.

TPE

Designation for Thermoplastic Elastomer.

TPER

Designation for thermal plastic rubber.

TPO

Designation for two stranded copper conductors with separator and code rubber insulation and copper braid over each. Laid parallel with cotton or rayon braid overall. For use in dry locations on small appliances. Same construction as type PO, but with extra flexible tinsel conductors, 125V.

TPS

Designation for toughened polystyrene.

TPSI

Designation for Tons Per Square Inch.

TPT

Designation for cord similar to TP tinsel cord, but all thermoplastic insulation and jacket, 125V.

Tracer

A means of identifying cable/polarity.

Tracer Stripe

When more than one color-coding stripe is required, the first (or widest) is called the base stripe, and the narrow stripes are called Tracer Stripes.

Tractor Capstan

The motivating power for large cables consisting of a nip between two moving endless bolts which grip the cable.

Traffic Mark

Abrasions that result from metal contact and vibration during transit.

Train

A grouping of roll stands connected end to end, or in series, in a rolling mill. In the construction of a rolling mill, these stands of rolls are placed so one engine or motor can drive them.

Training Radius

See Radius, Training.

Tramline

An incipient over-fill or lap usually occurring in parallel pairs of lines.

Transducer

A device for converting mechanical energy to electrical energy.

Transfer Impedance

For a specified cable length, this is the ratio of internal longitude in a voltage to the external current flow on the cable shield.

Transfer Mold

A type of rubber mold. A slab or rubber material is placed on top of a heated mold tool. Pressure is applied to push or transfer the material into the mold cavities. The mold is held under pressure and heated until the material cures. The mold is then removed to a device that opens the tool.
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