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Thread: T24, California-disaggrigation

  1. #1
    Join Date
    May 2013
    Location
    Tujunga, CA
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    384

    T24, California-disaggrigation

    HI,
    Calif T24 Code says; Disaggreigate sub panels ; separate panel for lighting, power receptacle, Ac, motorized equipment per Calif. 2016 T24, table 130.5 (6)

    my Question is;
    can I just provide one sub panel for all AC equipment
    and off this panel thru a properly sized breakers feed adjacent sub panels which can be dedicated for lighting & receptacle

    ????

    Thank you

  2. #2
    Join Date
    Jul 2007
    Location
    Clark County, NV
    Posts
    1,032
    So the HVAC subpanel would have breakers for lighting and receptacle subpanels.

    I won't pretend to understand anything that goes on in the state of California, but it doesn't seem to meet the requirement you posted.

  3. #3
    Join Date
    Jan 2016
    Location
    PA
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    4,504
    not familiar with CA law but that is how I often do it

    I put in a large panel
    feed all mech loads off of it: chiller, ahu's, hw tanks, etc
    they are usually a large percentage of the bldg load
    I also have feeders from it for seperate lighting panels and recept pnls



  4. #4
    Join Date
    Jan 2016
    Location
    PA
    Posts
    4,504
    http://www.ccneca.org/Disaggregation...l_Circuits.pdf

    yes, looks like that is acceptable
    you need to measure: hvac, lighting, recept, seperately
    you can use additive or subtractive methods
    a table tells you based on service kva what loads must be indvidually metered
    you can do it almost anyway you like as long as you meter per the schedule

    meter the main and each panel
    main - ltg - recept = hvac



  5. #5
    Join Date
    May 2013
    Location
    Tujunga, CA
    Posts
    384
    Quote Originally Posted by Ingenieur View Post
    http://www.ccneca.org/Disaggregation...l_Circuits.pdf

    yes, looks like that is acceptable
    you need to measure: hvac, lighting, recept, seperately
    you can use additive or subtractive methods
    a table tells you based on service kva what loads must be indvidually metered
    you can do it almost anyway you like as long as you meter per the schedule

    meter the main and each panel
    main - ltg - recept = hvac
    thank you but,
    this is not an answer to my question
    this is the same statement that I and California made

  6. #6
    Join Date
    May 2013
    Location
    Tujunga, CA
    Posts
    384
    Quote Originally Posted by Ingenieur View Post
    http://www.ccneca.org/Disaggregation...l_Circuits.pdf

    yes, looks like that is acceptable
    you need to measure: hvac, lighting, recept, seperately
    you can use additive or subtractive methods
    a table tells you based on service kva what loads must be indvidually metered
    you can do it almost anyway you like as long as you meter per the schedule

    meter the main and each panel
    main - ltg - recept = hvac

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