Electricity

Electricity

A database referring to the existence of a flow of electric charge.

Industry: Utilities

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Electricity

Effective setting

Electrical equipment; Electricity

The setting of a protection system including the effects of current transformers, this effective setting can be expressed in terms of primary current or secondary current from the current ...

Effectively grounded

Electrical equipment; Electricity

Intentionally connected conductors or electric equipment to earth, where the connexion and conductors are of sufficiently low impedance to allow the conducting of an intended current.

Efficiency (lighting)

Electrical equipment; Electricity

A ratio of light emitted from a luminaire to the light produced by the bare lamp.

Elbow

Electrical equipment; Electricity

A device used to connect a medium voltage cable (4-35KV nominal) to an electrical component such as a switch or transformer. Its name is derived from the fact that its shape is an "L". Elbows are ...

Electrical hazard

Electrical equipment; Electricity

A dangerous condition such that contact or equipment failure can result in electric shock, arc flash burn, thermal burn, or blast.

Electrical relay

Electrical equipment; Electricity

A device designed to produce sudden predetermined changes in one or more electrical circuits after the appearance of certain conditions in the controlling circuit.