0-10V Dimming Ballast Wiring Diagram

0-10V dimming has become a popular option in the lighting industry for its controllability, energy efficiency, and flexibility. This dimming technology is compatible with a range of fixtures, including fluorescent, LED, and HID lighting systems. However, not all electricians and contractors are familiar with the wiring requirements for 0-10V dimming ballasts. In this article, we will provide a comprehensive guide on how to wire a 0-10V dimming ballast and address some frequently asked questions.

What is 0-10V Dimming?

0-10V dimming controls the light output of a fixture by varying the voltage from 0V to 10V. This dimming method requires two separate wires to control the output of the ballast. One wire is used for the positive (dimming) signal, and the other wire is used for the negative (reference) signal. The dimming input signal is typically generated by a wall dimmer switch or a building automation system.

Unlike other dimming technologies, where the voltage is reduced to reduce the lamp’s power consumption, 0-10V dimming technology allows the lamps to maintain a constant power output while varying the light output. This feature makes it an energy-efficient solution as it doesn’t require much energy to dim the light down, resulting in reduced electricity consumption and utility bills.

Wiring Diagram for 0-10V Dimming Ballast

The wiring diagram of a 0-10V dimming ballast is relatively simple, as it only requires two wires for the input signal and two wires for the output signal. Here is a step-by-step guide on how to wire a 0-10V dimming ballast:

  1. Make sure the power is turned off at the circuit breaker or fuse box.
  2. Remove the old ballast and disconnect the wires from it.
  3. Connect the black wire from the dimming switch to the dimming positive wire of the ballast.
  4. Connect the white wire from the dimming switch to the dimming negative wire of the ballast.
  5. Connect the black wire from AC power to the hot wire of the ballast.
  6. Connect the white wire from AC power to the neutral wire of the ballast.
  7. Connect the red wire from the ballast to the hot wire of the lamp.
  8. Connect the blue wire from the ballast to the neutral wire of the lamp.
  9. Turn on the power and test the dimming function with the dimming switch.

It’s essential to follow the wiring diagram provided by the manufacturer to ensure proper installation and avoid damage to the ballast or the lamp.


1. Can I use a 0-10V dimming ballast with any type of lamp?

No, 0-10V dimming ballasts are specifically designed for fluorescent, LED, and HID lamps. Using the wrong type of ballast can damage the lamp or the ballast itself.

2. How far can the dimming control wire be from the ballast?

The distance between the dimming control wire and the ballast should not exceed 100 feet. Going beyond this limit can result in a weak or unstable signal, which can affect the dimming function.

3. Can I use a 0-10V dimming ballast with a non-dimming switch?

Yes, but the dimming feature won’t work as the switch won’t be able to provide the variable voltage required for dimming. The light output will remain constant, similar to a regular on/off switch.

4. Can I connect multiple lamps to one 0-10V dimming ballast?

Yes, but the ballast’s output voltage should match the lamps’ total wattage. Installing lamps with a higher wattage than the ballast can handle can overload the ballast and cause it to fail.

5. Can I install a 0-10V dimming system myself?

It’s recommended to hire a licensed electrician or a certified lighting technician to install a 0-10V dimming system. Improper installation can result in electrical hazards, fire hazards, and damage to the lighting system.


0-10V dimming technology is a popular and energy-efficient solution for controlling light output in commercial and residential lighting systems. Wiring a 0-10V dimming ballast requires following the manufacturer’s provided diagram and instructions, ensuring proper installation, and avoiding potential hazards. With proper installation and maintenance, 0-10V dimming technology can provide optimal lighting control and energy savings for years to come.