Topical Terminology > Efficacy, Lighting
1 Definition
Efficacy, Lighting
For Efficacy, Lighting we have a term and definition in Energy.
Efficacy, Lighting (Energy) 
The ratio of light from a lamp to the electrical power consumed, including ballast losses, expressed as lumens per watt. [See California Code of Regulations, Title 24, Section 2-5302]
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