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Old 12-07-2012, 06:04 PM   #1
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Farm Yard light


Mercury Vapor lamp glass broke so do not know the wattage. Numbers on metal base are: JHMAMJ - 4A80AD. What lamp do I need to replace the broken one?

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Old 12-07-2012, 11:09 PM   #2
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Is there a brand name somewhere on the light fixture ?
Are those quoted numbers on the lamp base ?
Or the fixture ?

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Old 12-08-2012, 12:42 AM   #3
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Originally Posted by Bob McKay View Post
Mercury Vapor lamp glass broke so do not know the wattage. Numbers on metal base are: JHMAMJ - 4A80AD. What lamp do I need to replace the broken one?
The most common answer will show up in the ballast area if the label or marking is not " erased " or gone and most common dusk to dawn MV verison is typically 175 watts ( USA / Canada side ) however there is one gotcha is that you can get the MV lamp but not the ballast anymore.

So if the ballast is shot then you will go with Metal Halide or Super Compat flourscenct lamp.

Merci,
Marc
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Old 12-08-2012, 09:48 AM   #4
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www.e-conolight.com Buy a 150 watt m.h. wallpack.
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