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Term Description
Core In cables, a component or assembly of components over which additional components (shield, sheath, etc.) are applied
Corona A discharge due to ionization of air around a conductor due to a potential gradient exceeding a certain critical value
Corona Effect (of A.C.) In wiring, the effect produced when two wires or other conductors have a great difference of voltage and are placed near each other
Corona Loss A loss or discharge which occurs when two electrodes have a great difference of pressure and are placed near each other
Corona Resistance The ability of an insulation to withstand a specified level of field-intensified ionization that does not result in the immediate complete breakdown of the insulation
Corona Test A test to determine the ability of a cable to withstand the formation of corona under an increasing applied voltage, and to extinguish corona when a corona-producing voltage is reduced
Corrosion The deterioration of a material by chemical reaction of galvanic action
Crazing The minute cracks on the surface of plastic materials
CRCS An acronym for continuous Rigid Cable Support (synonymous with tray)
Creep The dimensional change with time of a material under load
Creepage Electrical leakage on a solid dielectric surface
Cross-Linked or Irridated Polyethylene (XLPE) Polyethylene that is transformed from thermoplastic material to thermoset material, to achieve better chemical and thermal properties
Cross-Linked or Irridated Polyvinylchloride (XL-PVC) Polyvinylchloride that is transformed from thermoplastic material to thermoset material, to achieve better chemical and thermal properties
Cross-Linking Introducing intermolecular bonds between long chain thermoplastic polymers by chemical or electron bombardment means. The properties of the resulting thermosetting materials are usually improved.
Crosstalk Signal interference between nearby conductors by pickup of stray energy. It is also called induced interference.
Cure See definition for "Vulcanization"
Curl The degree to which a wire tends to form a circle after removal from a spool. An indication of the ability of the wire to be wrapped around posts in long runs.
Current The rate of flow of electricity in a circuit (measured in amperes)
Current Penetration The depth a current of a given frequency will penetrate into the surface of a conductor carrying the current
Current-Carrying Capacity The maximum current an insulated conductor or cable can continuously carry without exceeding its temperature rating (also called ampacity)
Cut-Through Resistance of solid material to penetration by an object under conditions or pressure, temperature, etc.
CV (Continuous Vulcanizations) Simultaneous extrusion and vulcanization of wire coating materials
Cycle The complete sequence of alternation or reversal of the flow of an alternating electric current
D.C. Abbreviation for "Direct Current"
Data Processing Cable UL (Underwriter's Laboratories) Standard 1690; National Electrical Code (NEC) Article 645 of NFPA 70
Decibel (dB) A unit to express difference of power level. Used to express power gaining amplifiers or power loss in passive circuits of cables.
Delay Line A cable made to provide very low velocity of propagation with long electrical delay for transmitted signals
Derating Factor A factor used to reduce the current carrying capacity of a wire when used in environments other than that for which the value was established
Dielectric Any insulating material between two conductors which permits electrostatic attraction and repulsion to take place across it
Dielectric Absorption The property of an imperfect dielectric whereby there is an accumulation of electric charges within the body of the material when it is placed in an electric field

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