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Utilities
Of or related to any publicy utility institution mandated with maintaining the infrastructure for a particular public service; such as the provision of water, gas and electricity.
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Utilities > 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 ...
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 ...
Sub-categories
- Electricity (7954)
- Emergency systems (0)
- Gas (1175)
- Sewage (66)