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Thread: On half of a switchleg is dimming after a few hours??

  1. #1
    Join Date
    Oct 2017
    Location
    Manteca,Ca
    Posts
    8

    On half of a switchleg is dimming after a few hours??

    This is a pretty big service area. There are around 80 lights,
    4 trunklines with 2 switchlegs and one emergency circuit.
    Each switchleg has its own roomcontroller.

    So half one switchleg (which is one whole trunkline ) dims after being on for about 5 hours.if u turn off the switch and let the lights rest for a while they will turn bright again for a while This problem only started last week and the buildiny has been up and running wit tennants for 4 months already.
    Just an FYI these lights do not have the dimming wires attached . They are capped off and no;38,^ used.. any ideas?

    Sent from my SM-N950U using Tapatalk

  2. #2
    Join Date
    Dec 2006
    Location
    Chapel Hill, NC
    Posts
    33,329
    Sounds like a loose connection somewhere that is affected by the heat from the load
    They say I shot a man named Gray and took his wife to Italy
    She inherited a million bucks and when she died it came to me
    I can't help it if I'm lucky



  3. #3
    Join Date
    Oct 2017
    Location
    Manteca,Ca
    Posts
    8
    Quote Originally Posted by Dennis Alwon View Post
    Sounds like a loose connection somewhere that is affected by the heat from the load
    I was thinking the same thing. Good good thing its all of the lights. That means its near the beginning of the run

    Sent from my SM-N950U using Tapatalk

  4. #4
    Join Date
    Dec 2006
    Location
    Chapel Hill, NC
    Posts
    33,329
    Could be the switch itself
    They say I shot a man named Gray and took his wife to Italy
    She inherited a million bucks and when she died it came to me
    I can't help it if I'm lucky



  5. #5
    Join Date
    Apr 2009
    Location
    Williamsburg, VA
    Posts
    5,438
    Quote Originally Posted by Dennis Alwon View Post
    Could be the switch itself
    That was my first thought. I've seen a few cases were residential grade switches were used in commercial, 1200 Watts worth lighting put on a 600-watt dimmer, 20a of lighting on a 20a breaker, etc.

    If the switch is the culprit, it will probably be half melted already.
    Electricians do it until it Hertz!

  6. #6
    Join Date
    Feb 2007
    Location
    USA
    Posts
    5,688
    No Dimming hooked up?
    How did you get that past Title 24 lighting controls?

  7. #7
    Join Date
    May 2018
    Location
    bamenda,cameroon
    Posts
    3
    hi, i think that there is a problem with the connections too. you can also call the manufacturer if the problem persist. maybe the arrangement made in your installation at some point may not be recommended.
    but check your connections again.

  8. #8
    Join Date
    Feb 2006
    Location
    Jersey
    Posts
    2,232
    Quote Originally Posted by Sierrasparky View Post
    No Dimming hooked up?
    How did you get that past Title 24 lighting controls?
    glad I don't live in california.
    " I'm at a crucial part of my painting "...........Monika Danneman

  9. #9
    Join Date
    Apr 2008
    Location
    Ann Arbor, Michigan
    Posts
    6,889
    180520-2452 EDT

    Obviously some voltage measurements should be made.

    .

  10. #10
    Join Date
    Oct 2017
    Location
    Manteca,Ca
    Posts
    8
    Hey everyone. The problem was a bad driver at the very beginning of the run. Had a field day diagnosing it but it was all worth it in the end

    Sent from my SM-N950U using Tapatalk

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