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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 
reel
Electrical equipment; Electricity
A cylinder device used to hold wire and cable until installed. There are standard reel sizes that are used in the electrical industry that are either wood (non-returnable) or ...
reference range
Electrical equipment; Electricity
A specific range of values of an influence quantity within which the transducer complies with the requirements concerning intrinsic errors.
reference value
Electrical equipment; Electricity
A specified single value of an influence quantity at which the transducer complies with the requirements concerning intrinsic errors.
refererence conditions
Electrical equipment; Electricity
Conditions of use for a transducer prescribed for performance testing, or to ensure valid comparison of results of measurement.
reflector
Electrical equipment; Electricity
A device used to re-direct the luminous flux from a light source by the process of reflection.
refractor
Electrical equipment; Electricity
A device used to re-direct the luminous flux from a light source by the process of refraction.
regulating transformer
Electrical equipment; Electricity
A transformer used to vary the voltage, or phase angle, of an output circuit. It controls the output within specified limits and compensates for fluctuations of load and input ...
Sub-categories

- Electricity (7954)
- Emergency systems (0)
- Gas (1175)
- Sewage (66)