Posted by Tom in Chicago on Thursday, September 28, 2006 at 12:16PM :
In Reply to: Re: OT: Fluorescent Lighting - HO vs Electronic Balast posted by David Sherman on Thursday, September 28, 2006 at 10:33AM :
David,
I've had some of the same problems only on a larger scale in a 400,000 sq.ft office building. Poor electric quality along with the more "modern" ballast designs results in many replacements. We go about 3-5 yr lifespan at 18hr/day operation, that's it. Where I used to work, we had 30yr old T12's and magnetic ballast's, never changed one the whole time I worked there. The only thing I've seen that looks promising is the new T5 HO fixtures, I've got one office now thats had no trouble since installed, going on 6yr now.
Tom
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