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175W Sylvania Metalarcs From School!
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We were cleaning out the shop in my Construction class and they somehow found their way into the shop... three out of six were left. from 10/2000, original case and all. I tested them on a 175W MV ballast but only one started up. Odd how some MH lamps will strike on MV ballasts but other lamps from the very same batch won't...
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BUT the OCV on a 175w MV ballast is lower, so...that might explain why.