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Joined: Dec 2004
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I just heard that 400W and up high bay fixtures now require lenses. No open bulb fixtures allowed.
Anyone read this yet?
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Joined: Aug 2003
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It depends.
Metal halide or mercury vapor luminaires in a multi-purpose type occupancy (such as a gym) need a lens. Metal halide fixtures need a lens always, unless they are a "type O" or a "type PAR".
At least, thats what I remember reading. Anyone else?
[This message has been edited by Ryan_J (edited 01-10-2005).]
Ryan Jackson,
Salt Lake City
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Joined: Apr 2002
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Joined: Dec 2004
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Bjarney, thanks for the links.
I learned some things about MH lights with that info.
Now I have to go find what these lamps look like. Any links to pics of the lamps themselves handy in your arsenol?
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Joined: Aug 2003
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Another nice resource for this is the ROp and ROC.
Regarding the lamps, they have a dimple in the end of the lamp, and the base is right between medium and mogul, making them compatible only with a type "O" fixture.
Ryan Jackson,
Salt Lake City
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