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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.

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