Glossary

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There are 31 names in this directory beginning with the letter E.
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.

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.

Electro-Tinned
Electrolytes process of tinning wire using pure tin.

Electrode
A conductor through which a current enters or leaves a nonmetallic conductor.

Electromagnetic
Pertaining to the combined electric and magnetic fields associated with movements of electrons through conductors.

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
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.

Electroplate
The term used to indicate the application of a metallic coating on a surface by means of an electrolytic action.

Electrostatic
Pertaining to static electricity or electricity at rest.

Elongation
An increase in the length of a wire or cable caused by longitudinal tension.

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
The number of wires or threads on a braider 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.

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.

ETFE
Ethylene tetrafluoroethylene. An alternating copolymer consisting of ethylene and tetrafluoroethylene segments. High impact resistance with useful mechanical properties up to 200°C.

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.