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Thread: Disconnects

  1. #11
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    Quote Originally Posted by infinity View Post
    That's how we would do it. The switchboard company would come out and measure the bus and fabricate what's needed. I'm guessing that they use methods that do not violate the listing of the equipment.
    So I guess it would be three pieces of detail one for each phase?

    Sent from my SM-G955U using Tapatalk

  2. #12
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    Quote Originally Posted by mstrlucky74 View Post
    So I guess it would be three pieces of detail one for each phase?

    Sent from my SM-G955U using Tapatalk
    If it's on the line side of the service disconnect(s) it would need to be 4 pieces of detail because each service disconnect would require a neutral unless it were a 3 phase, 3 wire system.
    Rob

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    All responses based on the 2014 NEC unless otherwise noted

  3. #13
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    Quote Originally Posted by infinity View Post
    If it's on the line side of the service disconnect(s) it would need to be 4 pieces of detail because each service disconnect would require a neutral unless it were a 3 phase, 3 wire system.
    3P4W..so the bus i jut bolted to the extg. bus bars?

    Also whats a bit weird is the con ed incoming is feeding ss#1 which feeds part of the MS-A board( I got that) but SS#2 & #3 and the blue school panel. What is ss#2 doing...looks like feeding the other half of MS-A but then ss #3 is feeding blue school panel. Something just doesn't look right with SS#2 & SS #3 and the blue school panel feed each other and how they work together.
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  4. #14
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    Quote Originally Posted by mstrlucky74 View Post
    3P4W..so the bus i jut bolted to the extg. bus bars?

    Also whats a bit weird is the con ed incoming is feeding ss#1 which feeds part of the MS-A board( I got that) but SS#2 & #3 and the blue school panel. What is ss#2 doing...looks like feeding the other half of MS-A but then ss #3 is feeding blue school panel. Something just doesn't look right with SS#2 & SS #3 and the blue school panel feed each other and how they work together.
    I cannot read your attachments.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  5. #15
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    Better? SS#1 is incoming from Con Ed
    Attached Images Attached Images  

  6. #16
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    Quote Originally Posted by mstrlucky74 View Post
    Better?
    Not really.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  7. #17
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    Quote Originally Posted by infinity View Post
    Not really.

    Sorry. Anyway...how do you attached bus bar to extg. bus bars....4000A in main switchboard? Bolt together?

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