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Thread: Code question 277 and 24 volts same fixture.

  1. #1
    DIY Junior Member Lionsfniniowa's Avatar
    Join Date
    Sep 2012

    Default Code question 277 and 24 volts same fixture.

    Here is my case. I hired a contractor that wired 277 volt floesent fixtures. He added a 12 volt motion sensors on the circuit. Instead of placing the control box on a servicable wall he place them inside the first fixture under the canopy. Is this legal? I thought you could not mix wire voltages in the same box. As far as I know fixtures cant be used as a junction box? This is in a school in the State of Iowa.

  2. #2
    Electrician ActionDave's Avatar
    Join Date
    Feb 2009


    Can't say for sure from what you have described. You can use the fixture to junction wires that are associated with the light. As far as mixing voltages it depends on how the motion sensor is meant to be used.

    The person that can give you a complete answer is your electrical inspector.

  3. #3
    Electrical Contractor/Instructor jwelectric's Avatar
    Join Date
    Jun 2007
    North Carolina


    As long as the insulation of the low voltage is rated for line voltage then they can be in the same enclosure.

    What make you think that the sensor is at 24 volts?

  4. #4
    Plumber jimbo's Avatar
    Join Date
    Aug 2004
    San Diego


    Quote Originally Posted by jwelectric View Post
    What make you think that the sensor is at 24 volts?
    I was kind of wondering about that....not so common.

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