SS72012 datasheet(125/144 Pages) ACIT

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Glossary

Cold Bend: Test procedure in which a sample of wire or cable is wound

around a mandrel of a speciﬁed size within a cold chamber, at a

speciﬁed temperature for a given number of turns at a given rate of

speed.The sample is then removed and examined for defects or

deterioration in the materials or construction.

Cold Flow: Permanent deformation of materials due to mechanical

force or pressure.

Cold Joint: Defective solder joint due to insufﬁcient heating.

Cold Work: Hardening and embrittlement of metal due to repeated

ﬂexing action.Also known as work hardening or metal fatigue.

Color Code: A color system for wire or circuit identiﬁcation by use of

solid-colored insulation or stripes, tracers, braids, surface printing, etc.

Compact Conductor: Stranded conductor which is rolled to deform

the round wires, forcing them to ﬁll the normal interstices between

the wires within the conductor.

Composite (Clad) Wire: A wire having a core of one metal with a

fused outer shell of one or more different metals.

Composite Conductor: Two or more strands of different metals,

assembled and operated in parallel.

Compound: An insulating or jacketing material made by mixing two

or more ingredients resulting in one material.

Concentric-Lay Conductor: A stranded conductor with a central core

surrounded by one or more layers of helically wound strands in a ﬁxed

round geometric arrangement.Most commonly, all wires are of the

same size and the central core is a single wire.The direction of lay for

successive layers may be alternately reversed or in the same direction.If

the direction of lay for successive layers is the same, the lay length will

increase with each successive layer.The stranded direction of the outer

layer is left hand.

Concentric-Lay Cable:Either a concentric-lay conductor as deﬁned

above, or a multiple-conductor cable composed of a central core

surrounded by one or more layers of helically-laid wires.

Concentric Strand: A strand that consists of a central wire or core

surrounded by one or more layers of spirally laid wires.Each layer after

the ﬁrst has six more strands than the preceding layer and is applied in

a direction opposite to that of the layer underneath.

Concentricity: In a wire or cable, the measurement of the location of

the center of the conductor with respect to the geometric center of the

outer layer.

Conductance: The reciprocal of resistance.It is the ratio of current

passing through a material to the potential difference at its ends.

Conductivity: Reciprocal of volume resistivity.Conductance of a unit

cube of any material.

Conductor: A wire or combination of wires not insulated from one

another, suitable for carrying electric current.

Continuity Test: A test performed on a length of ﬁnished wire or

cable to determine if the electrical current ﬂows continuously

throughout the length.

Continuous Vulcanization: The process of vulcanizing wire

insulation after extrusion onto a conductor by passing it through a

vulcanizing chamber under high pressure and temperature.

Contrahelical: The layer spiraling in a direction opposite that of the

preceding layer within a wire or cable.

Control Cable: A cable used for remote control operation of

equipment.

Controlled Impedance Cable:Cable with two or more insulated

conductors where impedance between respective conductors is kept

constant throughout the entire length.

Copolymer: A compound resulting from the chemical reaction of two

chemically different monomers.

Copper: Copper and copper alloys are the most widely-used metals in

wire and cable conductors because of their high electrical and thermal

conductivity, excellent corrosion resistance, and ease of fabricating,

joining and forming.Some of the common types of electrical coppers

and copper alloys are:

• Electrolytic tough pitch copper (ETPC) has a minimum copper content

of 99.9%.Annealed conductivity averages 101% with a 100%

minimum.It is widely used for wire and bus bars.

• Silver bearing copper with a 99.9% copper content provides nearly

the same electrical conductivity as ETP copper but offers a higher

softening point, greater resistance to creep, and higher strength at

elevated temperatures.

• Oxygen-free high conductivity copper (OFHC) has 99.95% minimum

copper content with an average annealed conductivity of 101%.This

copper has no residual deoxidant.Other coppers use phosphorus,

boron, or lithium as deoxidizers to eliminate susceptibility to hydrogen

embrittlement and improve weldability.

Copper-Constantan: Thermocouple wire with one copper and one

constantan wire.The copper is the positive wire and the constantan is

the negative wire.Constantan is an alloy of copper, nickel, manganese,

and iron.

Copper-Covered Steel Wire: A wire having a steel core to which is

fused an outer shell of copper.Also known as“copperweld.”

Cord: A small, very ﬂexible insulated cable constructed to withstand

mechanical abuse.(Note:There is no sharp dividing line in respect to

size between a cord a cable, but generally, a cord is considered to be 10

AWG and smaller.)

Cord sets: Portable cords ﬁtted with any type of wiring device at one

or both ends.

Core: A component or assembly of components over which other

materials are applied, such as shield, sheath, or armor.In coaxial cables,

the core consists of the center conductor and dielectric.

Corona: The phenomenon of air breakdown when electric stress at the

surface of a conductor exceeds a certain value.At higher values, stress

results in luminous discharge.

Corona Extinction: The voltage at which corona, once initiated, will

extinguish as voltage is decreased.

Corona Ignition Point: The voltage at which corona will initiate as

voltage is increased.

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