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#98586 01/10/05 11:10 AM
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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#98587 01/10/05 12:32 PM
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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
#98588 01/10/05 02:22 PM
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#98589 01/10/05 03:43 PM
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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?

#98590 01/10/05 05:41 PM
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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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