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New Blaster...that Replaced an Old Nema Head
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This High School had about 6 MV Nema Heads around its Perimiter (That i Saw)...most of them have been replaced by the Newer HPS Blasters....this nema in Particular seems like an Easy Fix...but too late now :-(
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And at least they used a 12" refractor.
and about a year ago a 12" Refractor actually fell off one of these...i kept it...if you look at my crude hi/low bay pic thats where that reflector came from....the refractor was mostly intact aside from one crack but that eventually went in the trash in addition to the reflector.
I've actually never seen the ones that use a self ballasted lamp, the ones sold here use a ballast.
though i stuck a 13 watt PL in a floodlight made for a 300 Watt halogen and i could see that one surviving winter because it holds in heat fairly well.