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Old 01-02-2006, 07:52 PM   #1
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Flourecent Lights


I am attempting to change a ballast in a single bulb flourecent light fixture. At Menards they said I could use a ballast for a double light and change the wiring. I think they said to hook to ballast: black to power, White to nuetral, red to one end of light, blue to the other end. IS this right?
I hooked them up this way and they worked for about a day now they are very dim. I changed 3 ballasts this way. Please let me know what I did wrong and what I need to do. THANKS!!
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Old 01-02-2006, 09:07 PM   #2
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Flourecent Lights


Your only mistake was taking directions from someone at a store. There's a reason those folks work at a store and not work as a tradesman.

Seems like there should be a yellow there. Can you post the manufacturer and model # of the ballast you installed, and I'll look up the cut sheet on it to get you steered in the right direction.
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Old 01-02-2006, 09:11 PM   #3
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Flourecent Lights


It is a sylvania. Not sure of the model.There is no yellow wire. Only red and blue on one side. Black and white on the other. Thanks
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Old 01-02-2006, 10:14 PM   #4
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Flourecent Lights


If it is an old 8' fixture the hot and the neutral feed through the lampholders. You would have to change that. Sounds like you have a 1 lamp ballast if there is only a red and a blue. Do you have the correct lamp in the fixture??

If you have 2 blues and your hooking 2 blues to the lamp holder that would be a problem. One blue needs to be capped off. 2 wires on the lampholder tie to one blue. 2 wires on the other lampholder tie to the red. Again if it is an old 8 footer disconnect the black and the white from the holder but you would need 2 leads from the holder to connect to the ballast.

Last edited by K2eoj; 01-02-2006 at 10:24 PM.
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Old 01-02-2006, 10:36 PM   #5
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Flourecent Lights


It is an 8 foot light. The new ballast says to hook up blue to one bulb : red to other: And white to opposite end of bulb. I know it is for a dual bulb fixture. However is there anyway to hook it to a single bulb fixture?Thanks
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Old 01-02-2006, 10:51 PM   #6
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Flourecent Lights


Quote:
Originally Posted by Bubba
It is an 8 foot light. The new ballast says to hook up blue to one bulb : red to other: And white to opposite end of bulb. I know it is for a dual bulb fixture. However is there anyway to hook it to a single bulb fixture?Thanks
I'm not familiar with your ballast but normally we cap one of the hot leads,(in your case the red orthe blue). Of course the ballast has to say it is capable of being used as a one lamp. Sounds like an electronic ballast but i've never seen one that uses the neutral to the lampholder. The ballast should also say what type of lamps to use t-8 or t-12,s.
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Old 01-03-2006, 11:47 AM   #7
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I found a ballast similar to the one you have and am reasonably certain yours is not suitable to use for 1 lamp. There are electronic instant start ballast that can run one less lamp by capping off but that would be stated on the label. You should be able to find the correct ballast for your fixture either online or at an electrical supply. HS.
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