fluorecent light fixture and humidity


Old 07-18-05, 08:08 AM
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fluorecent light fixture and humidity

4-bulb fluorecent light fixture installed in a drop ceiling. 4 40w instant start bulbs (no starter) and ballast controlled. When the outside humidity is high, the bulbs will not start. When the weather is dry, they light instantly. Changed the bulbs. Still same problem.
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Old 07-18-05, 08:50 AM
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Don't know all the reasons for it, and don't really know the cure, but you're not alone. These symptoms are often reported.
Old 07-18-05, 09:25 PM
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Is this a single, T-8 4 lamp ballast?

Or is it two T-12 2 lamp ballasts?

Magnetic or electronic?
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