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fluorescent ballast longevity
After 2 years of moderate use (2 hrs / day on average) I've determined
that the el cheapo $8 Commercial electric shop lights (2xF32T8) have a pretty short life expectancy -- 5 out of 7 units have failed, and a 6th is starting its flickering death throes. The bulbs are fine, the ballasts (Sunpark CL-15) are toast. Meanwhile all the other ancient shop lights that I inherited with the house are still going strong. Since the units were cheap, it's a painless learning experience. But in the quest to find longer lasting ballasts, the path is not so clear. Some other units in the $20-$30 range at the BORG come with the same 2-year warrantee as the cheapo units, and most other units have no such indication of life expectancy. Even the local lighting speciality store only gives a 5-year expectancy for their $38 ballasts. At that price, it makes no economic sense to do anything but buy new cheapo lights every 2 years, although it feels wasteful and the repurchase and re-hanging is a small hassle. Other random details: electric system measures 120V on the money; these lights are hung 4" from the basement ceiling (between joists) just like the non-failing older units; basement temp is 60-75 degrees most of the year, maybe up to 85 in rare summer heatwaves. Does anyone have better info or experience with long-lasting quality shop lights? Thanks in advance for any advice. |
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