Sodium vapour lamps

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weressl

weressl

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Texas by the Gulf, geat crab, great shrimp
rcarroll said:
The only way I can answer that is, if the design of the fixture is compatible with the lamp, yes. I don't think you can install a HPS lamp in just any fixture.
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Correct. Nor can you install a ballast/lamp combination that is not designated on the fixture's label. In other words if you would like to replace your inefficient mercury vapor lights with metal halide, it does not matter if the wattages are "close" to each other. Each type and size of lamp has its own temperature profile and the specific fixture-bulb combinations are tested by attaching about 30-40 RTD's at strategic points and running a maximum ambient 120% overvoltage temperature profile to arrive at the T-number for the fixture.

For the same reasons, when dealing with Class I, Div.1 or Div.2. fixtures:
- Don't replace incandescent lights with self-ballasted, compact fluorescent bulbs.
- Don't use "retrofit" self-ballasted MV lights if the fixture.
- Make ABSOLUTELY sure that your T-rating is BELOW the lowest autoignition temperature of all chemicals invoilved, therefore;
- Insist of seeing the Area Classification documents before design or installation.
 
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