2019/07/16 by Levy, A. W.
#Energy efficiency #artificial lighting #consumption #electrical measuring instruments #energy #energy conservation #interior lighting #lighting #lighting controls #lighting technology #Éclairage éconergétique #éclairage
paper · doi:10.4224/40000582
The device described in this Note accumulates and records the number of hours artificial lights are switched on over a period of time up to 12 months. The meter, designed and developed at the Division of Building Research, is simple in operation and inexpensive so that it is practical to record each lighting switching circuit within a building.