Hey Dan, Great point. You just reminded me of the PV solar powered billboard lights I installed about 2 years ago. They are 120 Vac, 50 watt LED floods. So far they survived two Yuma, AZ summers with temperatures above 115°. During my studies, I learned that heat dissipation by the fixture was a major factor in LED life.
I have been told by some RV customers about 12 volt LED replacement assemblies failing after 1-2 years. These are 12" and 15" tubes that fit in the fluorescent fixture and bayonet style LED clusters. I'm still reluctant about selling LED's even though customers regularly ask for them at our RE retail store. Larry Crutcher Starlight Solar Power Systems On Dec 5, 2012, at 5:22 PM, Dan Fink wrote: The fixture - and putting the correct lamp into it - is more important as efficiency IMO. Some lamps burn out very early in the wrong fixture. My recent article in the Huffington Post sums up my view: http://www.huffingtonpost.com/dan-r-fink/energy-efficient-lighting_b_1961945.html That said, I'm finding some excellent 120vac LED products these days. Haven't tried any in tube format yet, but I have an undercounter LED strip in the works to replace a tired t-8 FL. Dont bother with DC LEDs unless you are lighting an RV or camper. There are some good DC LED fixtures out there for that purpose, but they are made to be "built-n". -- Dan Fink, Executive Director; Otherpower Buckville Energy Consulting Buckville Publications LLC NABCEP / IREC accredited Continuing Education Providers 970.672.4342 (voicemail)
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