How To Convert T12 to T8 Lighting Ballasts
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How to Convert a T12 Fluorescent Light Fixture: Wiring a T12 Fluorescent Fixture for a T8 Energy Efficient Ballast, How do I convert T12 light fixtures to T8 electronic ballasts? © By: Dave Rongey |
Wiring Fluorescent Lighting Fixtures
Electrical Project: How do I convert my T12 light fixtures to the T8 electronic ballasts?
- 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, Illinois.
Dave’s Reply:
Thanks for your electrical wiring question Jerry.
Convert a T12 Fluorescent Light Fixture
Application: Fluorescent Light Fixture Wiring.
Skill Level: Beginner to Intermediate.
Tools Required: Basic Hand Tools and Safe Ladder.
Estimated Time: Depends on personal experience, the light fixture and access to the light fixture.
Precaution: Identify the light fixture circuit, turn it OFF and Tag it with a Note before working with the wiring.
Notice: Replacement parts for the light fixture should be compatible with the type of fluorescent lamps that have been installed.
Wiring a T12 Fluorescent Fixture for a T8 Energy Efficient Ballast
- Converting a Fixture from a T12 Ballast to a T8 Ballast
- The following must be identified to select the correct Energy Efficient Electronic T8 Ballast to replace a T12 Magnetic Ballast:
- The circuit voltage.
- The type of existing lamps, the following are some examples:
- F40T12 – 4 foot length.
- F96T12 – 8 foot length.
- NOTE: The lamps will be replaced with new T8 lamps as specified on the new T8 Ballast.
- The number of lamps.
- Refer to the following example which describes the basic conversion process.
- The following must be identified to select the correct Energy Efficient Electronic T8 Ballast to replace a T12 Magnetic Ballast:
Example of Wiring a T8 Ballast
- Wiring the Electronic T8 Ballast
- Each electronic ballast has a complete wiring diagram attached to the ballast which describes the specific wiring configuration from the ballast wire leads to the lamp sockets.
- Using the Existing Socket Wires
- You will be able to use the existing socket wires which will connect to the new electronic ballast.
- The Original Lamp Sockets
- The lamp sockets will work for both T12 and T8 lamps because the pin configuration is the same.
- If a socket has signs of wear or if it is cracked or broken then the socket should be replaced.
- Grounding the Light Fixture
- Be sure the circuit ground wire is attached to the metal frame of the light fixture.
ENERGY REBATE PROGRAMS:
Check with your local electric utility company who may have an energy efficiency upgrade program that may offer incentives that may apply to your project.
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