The most popular option to light large areas of buildings. They come in a variety of connection types and power ratings.

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lights not coming on right.


I have two 4ft double bulb flouresent light fixtures in my Kitchn. I live right out of New Orleans, LA. When it rains, and it's damp outside we have trouble turning the lights on. Especially in the morning. Sometimes you can flip the switch on and off a few times and get it to come on. But most of the time you just have to wait.

Any idea what could be causing this?


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When using fluorescent lighting in wet or very humid areas, it is important to ensure the bulb or ballast is grounded properly. Most modern residential electrical wiring incorporates an electrical ground into the circuitry. Whether using a traditional fluorescent with a ballast or a compact bulb, always ensure the fixture has been installed and grounded properly. Fluorescent bulbs run cooler than incandescents, and water may condense on the exterior of the bulb, presenting a significant shock hazard in an ungrounded fixture.


The prongs on a traditional fluorescent tube are made of metal and are relatively exposed to the surrounding air even when installed in a fixture. Exposing the bulb to moist air will cause these prongs to corrode, reducing the performance and life of the bulb. It is advisable to avoid using fluorescent bulbs in wet or humid areas, opting instead for a sealed incandescent, mercury vapor or LED light source.

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Good answers; in wet or humid areas many times florescent fixtures are enclosed. Also, your bulbs may be dirty - when moistened by humidity it can form a short circuit around the bulb and keep it from striking (starting).

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The old style magnetic ballasts can lose voltage in humid environments which can prevent the necessary arc between the ends of the bulb. Either replace with a fixture with an electronic ballast, or alternatively, cut a narrow (1/4”-1/2”) strip of foil and attach it to the back of the bulb from end to end but stopping just short of the metal on each end. This helps a low voltage ballast make the initial arc required to light the bulb.

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