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Thread: Lighting controls

  1. #1
    Join Date
    Sep 2018
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    Dallas, tx
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    Lighting controls

    currently we have a building that has 7 contactors controlled by a single control circuit of 277V ( photocell time clock ) contactors have distinct purpose ( one low voltage lighting , one high voltage lighting and emergency exc. My question is , is this acceptable and where can i find related information in the code book?

  2. #2
    Join Date
    Feb 2009
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    Durango, CO, 10 h 20 min without traffic from winged horses.
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    It's a design issue, not a code issue. There is no code reference. I remember working on a K Mart that had the lights on the entire sales floor controlled by one 200A contactor.
    If you don't think too good, don't think too much.

  3. #3
    Join Date
    Sep 2018
    Location
    Dallas, tx
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    The fact that one 277v emg curcuits contols low voltage high voltage normal and emergency is not an issue ? That was my concern

  4. #4
    Join Date
    Feb 2009
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    Durango, CO, 10 h 20 min without traffic from winged horses.
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    Quote Originally Posted by Michael B2356 View Post
    The fact that one 277v emg curcuits contols low voltage high voltage normal and emergency is not an issue ? That was my concern
    I'm not quite sure what you mean. Look at 700.12(F).
    If you don't think too good, don't think too much.

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