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Thread: Chiller Feeder Calculation

  1. #21
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    Quote Originally Posted by electrofelon View Post
    How about some NEC references for any of that??
    My only reference is this article:

    https://www.apc.com/salestools/KSIH-6Y6UU5/KSIH-6Y6UU5_R0_EN.pdf

  2. #22
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    Quote Originally Posted by Sahib View Post
    Please try to stay on topic. The OP was about the NEC load calculation, so it doesn't matter what you think is overkill or what might/should be or if the compressor has polka dots on it.
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

  3. #23
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    Quote Originally Posted by electrofelon View Post
    Please try to stay on topic. The OP was about the NEC load calculation, so it doesn't matter what you think is overkill or what might/should be or if the compressor has polka dots on it.
    I do not believe the article in my last post is against the intent of NEC or is not on topic.

  4. #24
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    Quote Originally Posted by Sahib View Post
    I do not believe the article in my last post is against the intent of NEC or is not on topic.
    The article isn't relevant to Chillers. Nor does it completely follow the NEC.

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    Quote Originally Posted by david luchini View Post
    The article isn't relevant to Chillers.
    Please clarify, if possible.
    Quote Originally Posted by David luchini View Post
    Nor does it completely follow the NEC.
    That is AHJ's call.

  6. #26
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    Quote Originally Posted by Sahib View Post
    Please clarify, if possible.
    The original question was about Chillers. The article you linked is about Air Conditioners.


    Quote Originally Posted by Sahib View Post
    That is AHJ's call.
    No it's not. The NEC tells you how to calculate MCA and MOCP. The article you linked doesn't follow the NEC requirements.

  7. #27
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    Quote Originally Posted by david luchini View Post
    The original question was about Chillers. The article you linked is about Air Conditioners.




    No it's not. The NEC tells you how to calculate MCA and MOCP. The article you linked doesn't follow the NEC requirements.
    Thanks for your response. I wonder whether i)NEC distinguishes between air conditioner and chiller and ii)UL or third party certifying authority would pass a product design also based on this article and so the AHJ because there is no violation of intent of NEC ie there is no danger to life and property.

  8. #28
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    Quote Originally Posted by Sahib View Post
    Thanks for your response. I wonder whether i)NEC distinguishes between air conditioner and chiller
    No (except for the special provisions for room air-conditioners.) It distinguishes between motor operated equipment with a heretic refrigerant motor-compressor and equipment without.

    Quote Originally Posted by Sahib View Post
    and ii)UL or third party certifying authority would pass a product design also based on this article
    Nobody would pass a product design based on this article. It's just an article, and not a very good one.

  9. #29
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    Quote Originally Posted by david luchini View Post
    No (except for the special provisions for room air-conditioners.) It distinguishes between motor operated equipment with a heretic refrigerant motor-compressor and equipment without.
    Sorry, it is not clear how the article is not applicable to ''chillers''.

    Quote Originally Posted by david luchini View Post
    Nobody would pass a product design based on this article. It's just an article, and not a very good one.
    UL or other third party certifying agency would test such a product design anyway for any danger to life and property. There would be none.......

  10. #30
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    Quote Originally Posted by Sahib View Post
    Sorry, it is not clear how the article is not applicable to ''chillers''.
    It doesn't mention "chillers" anywhere in the article. Where would you find a chilled water chiller?

    Quote Originally Posted by Sahib View Post
    UL or other third party certifying agency would test such a product design anyway for any danger to life and property. There would be none.......
    They would test a product to UL standards, not to what this article says.

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