I have been to 5 o6 2 1/2 day street lighting conferences over the last 6 years, and am a member of the IES Roadway Lighting Committee.
LED lighting is here.
LED lamps are now at Costco.
We as electricicans must become familar with the this technology.
We need to think in terms of luminarie replacement, not lamp replacement, perhaps once in your career.
For those who doubt LED technology, the traffic signal industry was a early and successful adopter of LEDs.
Many agencies are on the third generaton of signal lamps. Going from 116 watts to 20 watts is a big savings in energy.
But for most applications, they are still expensive compared to incandescent.
There have been many large scale street lighting installations of LEDs-Ann Arbor, Anchoridge...
Befire the China olympics, there were so many failures of LED street lighting, the chinese government would not allow any more to be installed.
Thermal mangement is the key to long life. The LED only converts 20% of the power to visible light, the rest is heat.
And I found out that the LED mfgs bin the LEDs to determine the best output and they keep those for their own use.
Thomas J Baker
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