Continuing the lighting audit theme for another post – A simple but often overlooked option for controlling energy costs is thoughtful design of the lighting circuitry and control system for lighting, particularly exterior lighting.
Exterior lighting control is hardly rocket science, low cost circuitry with a contactor and photocell is a preventative measure, keeping the the external lighting from operating during bright day time hours saving countless kilowatts, and the maintenance cost for re-lamping.
Unfortunately, as the exterior area of the car park as the photograph indicates, poor design coupled with lowest first cost mentality means building owners often end up with only one control circuit operating both indoor and outdoor fittings simultaneously. Of course, this causes waste due to the unnecessary operation of lights during the day light hours.
It is easy to zone other areas too, in the car park example, covered parking having a perimeter with abundant natural light don’t need electric lamps burning during daytime hours.
If you opt for photocell control, do ensure the photocell location is accessible for easy cleaning.