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Suprise find at work!
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Last week when doing the inventory I found three of those Advance R-2S40-1-TP ballasts! They're not that old but there was a good layer of dust on the boxes so they've never been used. Plus they're not included in the inventory listing, which may mean they won't be used. I also found an early 80s CGE 100W mercury lamp (like Joe's) I'll try to take a pic of soon. This lamp wasn't included in the inventory listing as well, so if we ever clean the place and get rid of them I'll try to bring them home!
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How can you tell the difference between Low, normal, and High Power Factor judging on how the lamps start?
The little flickering you see with HPF ballasts is (I guess) the leakage current of the capacitor.
I have 2 ballasts that are valmont and only work when wired for 1 lamp because the starting capacitor is fried...when it went bad the lamps were ok!
Rapid-start didn't go in something around -2F (but the fixture also wasn't grounded)