Wire And Cable Glossary Of Terms | E
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E
Symbol for voltage. Used to represent direct voltage or the effective (root-mean-square) value of an alternating voltage.
EC
Electrical Conductor (electrical grade aluminum - now known as Alloy 1350).
Eccentricity
Like concentricity, a measure of the center of a conductor’s location with respect to the circular cross-section of the insulation. Expressed as a percentage of displacement of one circle within the other.
Eddy Current
Circulating currents induced in conducting materials by varying magnetic fields.
EFTS
Electronic Funds Transfer System
EIA
Electronic Industries Association
Elastomer
A rubber or rubber-like material which will stretch repeatedly to 200 percent or more and return rapidly and with force to its approximate original shape.
Electrode
A conductor through which a current enters or leaves a nonmetallic conductor.
Electromagnetic
Magnetism caused by the flow of an electric current.
Electromagnetic Coupling
Energy transfer by means of a varying magnetic field.
Electromagnetic Field
A rapidly moving electric field and its associated moving magnetic field.
Electromagnetic Induction
The production of a voltage in a coil due to a change in the number of magnetic lines of force (flux linkages) passing through the coil..
Electromotive Force (e.m.f.)
Pressure or voltage. The force which causes current to flow in a circuit.
Electronic Wire and Cable
A length of conductive or semiconductive material used in an electronic application.
Electroplate
The term used to indicate the application of a metallic coating on a surface by means of an electrolytic action.
Electro-Tinned
Electrolytes process of tinning wire using pure tin.
Elongation
The fractional increase in the length of a material stressed in tension.
Embossing
Marker identification by means of thermal indentation leaving raised lettering on the sheath material of cable.
Emergency Overload
Load which occurs when larger-than-normal currents are carried through a cable or wire over a certain period of time.
EMI
ElectroMagnetic Interference
Enameled Wire
A conductor with a baked-on enamel film insulation. In addition to magnet wire, enameled insulation is used on thermocouple-type wires and other wires.
Ends
In braiding, the number of essentially parallel wires or threads on a carrier.
Energize
To apply rated voltage to a circuit or device in order to activate it.
EPDM
Ethylene-Propylene-Diene Monomer rubber
EPR
Ethylene-Propylene Rubber.
Equilay
More than one layer of helically-laid wires with the direction of lay reversed for successive layers, but with the length of lay the same for each layer.
ESTA
Australian approval agency; Electricity Trust of South Australia.
Etched Wire
A process applied to fluoroplastic wire in which the wire is passed through a sodium bath to create a rough surface to allow epoxy resin to bond the fluoroplastic.
Ethylene Copolymers (Non-Halogen)
An insulation material that combines attributes of polyethylene and polypropylene to provide a high level of flame resistance and low smoke production.
ETPC
Electrolytic Tough Pitch Copper. It has a minimum conductivity of 99.9%.
External Interference
The effects of electrical waves or fields which cause sounds other than the desired signal; static.
External Wiring
Electronic wiring which interconnects subsystems within the system.
Extruded Cable
Cable with conductors which are uniformly insulated and formed by applying a homogeneous insulated material in a continuous extrusion process.
Extrusion
Method of continuously forcing plastic, rubber or elastomer material through an orifice to apply insulation or jacketing over a conductor or cable core.
EZ
A type of SER cable with two insulated conductors and one stranded bare conductor twisted together under a PVC jacket.