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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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luminaire dirt depreciation factor (LDD)
Electrical equipment; Electricity
The multiplier used in luminance calculations to relate the initial luminance provided by clean, new luminaries to the reduced luminance that they will provide due to dirt ...
luminance
Electrical equipment; Electricity
In a direction and at a point of a real or imaginary surface
lux
Electrical equipment; Electricity
The SI unit of luminance. One lux is one lumen per square meter.
media access control (MAC) address
Electrical equipment; Electricity
Media Access Control address is a unique numeric identifier assigned to each device connected to an Ethernet network. It is used for data transmission and security functions.
main protection
Electrical equipment; Electricity
The protection system which is normally expected to operate in response to a fault in the protected zone.
major roadway (lighting)
Electrical equipment; Electricity
That part of the roadway system that serves the principal network for through-traffic flow. The routes connect areas of principal traffic generation and important rural highways ...
maximum permissible values of the input current and voltage
Electrical equipment; Electricity
Values of current and voltage assigned by the manufacturer which the transducer will withstand indefinitely without damage.
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