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  1. #1
    Join Date
    Dec 2007
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    Holladay, UT
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    577

    Default Lugs at service entrance

    Any idea what these lugs at top of main service panel would be for. There was a 200 amp main at panel and 2 30 amp breakers. I could not see where wires went to you can see they disapear behind cover into meter. They are not coonected to the main busbar.

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    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah
    http://acloserlookslc.com/

  2. #2
    Join Date
    Mar 2007
    Location
    Fletcher, NC
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    Default Re: Lugs at service entrance

    Looks like that is intended to accept another main disconnect which would feed to another panel.

    The main below feeds the panel in the service equipment and has lugs which feed out to another panel.

    If the top main had been installed, this would have fed two panels, one from each main.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  3. #3
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    Dec 2007
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    Holladay, UT
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    Default Re: Lugs at service entrance

    Jerry, Why are there wires running to those lugs?

    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah
    http://acloserlookslc.com/

  4. #4
    Join Date
    Mar 2007
    Location
    Fletcher, NC
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    Default Re: Lugs at service entrance

    To energize those breaker tabs on which another main breaker would be placed.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  5. #5
    Join Date
    Dec 2007
    Location
    Holladay, UT
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    577

    Default Re: Lugs at service entrance

    Thanks Jerry. I just couldn't see why they would run the wires when they weren't planning on using.

    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah
    http://acloserlookslc.com/

  6. #6
    Join Date
    Mar 2007
    Location
    Fletcher, NC
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    Default Re: Lugs at service entrance

    Quote Originally Posted by Tom Rees View Post
    Thanks Jerry. I just couldn't see why they would run the wires when they weren't planning on using.
    May have come that way from the factory.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  7. #7
    Join Date
    Dec 2007
    Location
    Chico,Ca
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    454

    Default Re: Lugs at service entrance

    The panel in question is a Siemens "All-In-One", and the breaker position is intended for a well pump since in rural areas most folks have their own well & are not supplied by a public water system, this gives the ability to disconnect a house/ trailer & any outbuildings & still leave the water pump supplied w/ power.

    Been a few years since I installed one, but think it's also marked 50A max. but cannot swear by that statement.

    Edit: this is a factory installed item.


  8. #8
    Join Date
    Dec 2007
    Location
    Holladay, UT
    Posts
    577

    Default Re: Lugs at service entrance

    Thanks Rollie and Jerry!

    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah
    http://acloserlookslc.com/

  9. #9
    Join Date
    Mar 2007
    Location
    Western Montana
    Posts
    261

    Default Re: Lugs at service entrance

    Rollie has it exactly right. I see them as standard in lots of homes built in the last 10 years or so. Factory installed, secondary disconnect. Yes, for wells (which are normally 20-amp circuits). I also often see the extra breaker used for A/C compressors.

    Don't normally see them used for extra 'sub' panels (and you would deffinately want to check the panel rating for that breaker position).


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