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Electricity
A database referring to the existence of a flow of electric charge.
Industry: Utilities
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Electricity
long distribution (lighting)
Electrical equipment; Electricity
A luminary is classified as having a long light distribution when its max candlepower point falls between 3.75MH
lumen
Electrical equipment; Electricity
Standard unit of measure for light flux or light energy. Lamp light output is measured in Lumens.
lumens per watt (LPW)
Electrical equipment; Electricity
The ratio of light energy output (Lumens) to electrical energy input (Watts).
luminaire
Electrical equipment; Electricity
A complete lighting unit consisting of a light source with a means of distribution (reflector and/or refractor), lamp positioning (socket), lamp protection (housing) and a provision for power ...
luminaire dirt depreciation (LDD)
Electrical equipment; Electricity
The accumulation of dirt on luminaires results in a loss of light output on the road. This loss is known as the LDD factor and is determined by estimating the dirt category from the graph below. From ...
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