[ ENERGY]
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WRITTEN BY MIKE MALLOY >> Since late 2007, LED technology has evolved dramatically. The
individual components have advanced in terms of lumen output and effi ciency—hence
increasing fi xture brightness. Also, the fi xtures have improved drivers, optics, energy- and
power-effi ciency, and are more adaptable to various voltages. However, there still are a few
tricks of the trade you should consider when installing LED lighting in your next project.
Retrofi t vs. Redo
ment, you use existing-lighting Are the current foot-candles have outdated wiring and need
wiring and circuits, which may or light levels acceptable? The to update it, you can likely
As with any lighting project, be challenging. For example, reality is, if you are happy with confi gure the new system to
some key questions must be on an industrial campus with a your current lighting, there is no maximize the energy effi ciency
considered up front. These 277VAC electrical lighting system, need to change the light levels. of the LED lights.
include the following: certain LED fi xtures may not be What is the condition and Do you want dimming and/
Do you want a one-for-one compatible with this voltage. You voltage of the existing wiring or motion control? The addition
replacement or should you may need to adapt and install and circuitry? Some LED fi xtures of occupancy sensors can yield
redesign the existing lighting additional electrical circuits to are more easily installed based incremental energy savings. LEDs
layout? In a one-for-one replace- match these LED fi xtures. on your facility’s voltage. If you are adaptable to this technology
58 FALL 2009 // RETROFIT MAGAZINE PHOTOGRAPHY COURTESY OF CREE
Retrofit_sept09.indd 58 9/22/09 3:13 PM
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