UFC 3-530-01
22 August 2006
Table 5-6. Lighting Control Energy Savings Examples by Application & Control
Type8
Maximum Expected Yearly
Space Type
Controls Type
Energy Savings
Occupancy Sensor
45%
Private Office
Sidelighting w/ photosensor
35%
Manual dimming or multilevel switching
30%
Sidelighting w/ photosensor
40%
Open Office
Occupancy Sensor
35%
Multilevel switching
15%
Classroom
Sidelighting w/ photosensor
40%
Occupancy sensor
25%
Adaptive compensation
15%
Grocery Store
Toplighting w/ photosensor
40%
Toplighting w/ photosensor
60%
Big Box Retail
Bilevel switching
10%
Table 5-7. Lighting Control Considerations.
Light Source
Switching Considerations
Dimming Considerations
With frequent switching (including
Requires electronic dimming ballasts and
Compact
occupancy controls) use programmed or
compatible controls. Dimming cannot
Fluorescent
rapid start ballasts. Provide ballasts with
decrease light below a minimum point
end-of-life protection.
without flicker. Some color shift occurs
when dimmed. Systems can dim lights
smoothly and effectively to 5%-10% of
initial lamp output. 1% dimming is available
but significantly more expensive.
Inexpensive. With frequent switching
Requires electronic dimming ballasts and
Linear
(including occupancy controls) use
compatible controls. Dimming cannot
Fluorescent
programmed or rapid start ballasts. Do not
decrease light below a minimum point
use instant start ballasts.
without flicker. Some color shift when
dimmed. Systems can dim lights smoothly
and effectively to 5%-10% of initial lamp
output. 1% dimming is available but
significantly more expensive.
No operating issues.
Dimming is not available.
Inexpensive. Due to warm up and restart
Requires special ballasts and control
HID Sources
times, access to switches should be limited.
systems. Dimming cannot decrease light
Not suitable for occupancy sensors or
below a minimum point. Lamp efficacy of
frequent switching.
source diminishes with dimming.
Significant color shift and lamp life
problems.
No operating issues.
Requires a dimming power supply.
LED
No operating issues.
Will extend lamp life. Dimming is full range
Tungsten
and appealing. Some energy savings.
Halogen and
Incandescent
5-19
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