Electricity

Electricity

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

Industry: Utilities

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Electricity

Guy strain insulator

Electrical equipment; Electricity

An insulator, normally porcelain, used to electrically isolate one part of a down guy from another. Guy Strain Insulators are made by Porcelain Products.

H-20

Electrical equipment; Electricity

Also referred to as "HS20-44" or "H20-44" Bridge Loading. H20 Loading refers to a maximum front wheel loading of 8000 lbs and a maximum rear wheel load of 16,000 lbs with an impact factor of 30

Half-duplex communications

Electrical equipment; Electricity

A communications system in which data can travel in both directions, but only in one direction at a time.

Hard drawn

Electrical equipment; Electricity

Wire that has been drawn to its specific size and not annealed.

Harmonic

Electrical equipment; Electricity

A sinusoidal component of the voltage that is a multiple of the fundamental wave frequency. Harmonics are primarily the result of the today's modern electronic equipment. Today's electronics are ...

Harmonic distortion

Electrical equipment; Electricity

The presence of harmonics that change an AC waveform from sinusoidal to complex.

Hazard risk category

Electrical equipment; Electricity

Categories defined by NFPA 70E-2004 to explain protection levels needed when performing tasks. The values range from 1 to 4. ATPV rated PPE is required for categories 1 through 4 as follows: 1- 4 ...