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How To Convert T12 to T8 Lighting Ballasts

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How to Convert a Fluorescent Lighting Fixture Ballast and T12 Lamps to T8 Lamps and an Electronic Ballast – You will be able to use the existing wiring and just replace the old ballast with the new electronic ballast.

Converting Fluorescent Lighting Fixtures

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I have about 200 2 ballast T12 lights. I want to start changing them over to T8 single ballast. I would like to know how to wire the lights for the single ballast.

This electrical wiring question came from: Jerry, a Property Manager from Carlinville, Il.
See more about Electrical Wiring for Illinois

Dave’s Reply:
Thanks for your electrical wiring question Jerry.

How to Convert a Fluorescent Lighting Fixture Ballast and T12 Lamps to T8 Lamps and an Electronic Ballast

  • Each electronic ballast has a complete wiring diagram that describes all of the connections.
  • The wiring is very straight forward and the conversion is very easy.
  • You will be able to use the existing wiring and just replace the old ballast with the new electronic ballast.
  • The lamp sockets work for both T12 and T8 lamps as the pin configuration is the same.
  • Check with your local electric utility company who may have a energy efficiency upgrade program that may offer a rebate that could apply to this project.

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This link is helpful as a Property Manager
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2 Comments


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Comments

2 Responses to “How To Convert T12 to T8 Lighting Ballasts”
  1. Bill Zechman says:
    November 13, 2012 at 6:40 pm

    The LED replacement four-foot tube has the familiar bi-pins on each end. Where do I feed the 120 VAC after I eliminate the ballast? Do we apply 120 VAC to each pair of pins on opposite ends? Or do we connect either pin on one end, and either pin on the other end? The LED tube I purchased did not include a wiring diagram, and given the price I paid I don’t want to run the risk of damaging the device.
    Thanks for your help!

    • Dave Rongey says:
      November 14, 2012 at 9:31 am

      Bill,
      In order to provide accurate information I would need to know more about the exact 4-foot LED lamp that you have purchased, such as the Make and Model Number would be helpful. Many lamps are made to install without and other wiring modifications of the light fixture, but lets make sure we identify which lamp you have first.
      Dave