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  1. #1
    Join Date
    Mar 2010
    Location
    Ocala Florida
    Posts
    92

    Default Siemens breakers in Sqare D panel ill fitting

    1991 home with Square D panel - has three Siemens breakers that are a little ill fitting. Would the Siemens be compatible in a Square D panel. Thanks

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  2. #2
    Join Date
    Mar 2007
    Location
    Melbourne Beach, FL
    Posts
    50

    Default Re: Siemens breakers in Sqare D panel ill fitting

    Mark,
    You will find this condition on older service panel, normally when AC is replaced, pool addition, or other modifications that require a breaker to be added or changed. Rather than plan ahead to make sure they have the correct breaker, they grab whatever breaker they have in their truck. Whatever the cause it is not OK and does not meet code. If you look at the manufacturer label it will list what breakers are acceptible, which will be only their breakers. Below is verbage in my report:

    Incompatible breakers are noted, normally, when an electrical panel manufacturer have their panel tested for UL approval, the test will be conducted using only the manufacturer's breaker. For this reason, the manufacturer will advise that only their breakers should be used in their panel. Industry standards require that equipment shall be installed and used in accordance with any instructions included in the listing or labeling. Several other brand breakers have been installed and therefore does not meet industry standards.

    1997 National Electrical Code 110-3 (b) Listed and labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling.


  3. #3
    Join Date
    Aug 2008
    Location
    Maryland
    Posts
    1,898

    Default Re: Siemens breakers in Sqare D panel ill fitting

    Quote Originally Posted by Roland Miller View Post
    Siemens QD. They are UL classified for use in SQD QO panels.Attachment 29111
    That would be fine, except the panel shown is a Square D Homeline.

    All answers based on unamended National Electrical codes.

  4. #4
    Join Date
    Dec 2007
    Location
    Chico,Ca
    Posts
    423

    Default Re: Siemens breakers in Sqare D panel ill fitting

    The link shown is for Eaton products, not Siemens.


  5. #5
    Join Date
    Nov 2009
    Location
    St Paul, MN
    Posts
    1,628

    Default Re: Siemens breakers in Sqare D panel ill fitting

    Quote Originally Posted by Rollie Meyers View Post
    The link shown is for Eaton products, not Siemens.
    Read past the first page of the pdf.

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  6. #6
    Join Date
    Dec 2007
    Location
    Chico,Ca
    Posts
    423

    Default Re: Siemens breakers in Sqare D panel ill fitting

    Quote Originally Posted by Ken Rowe View Post
    Read past the first page of the pdf.

    Still a list of Eaton products classified for other makes, CHQ is the Eaton/Cutler-Hammer classified replacement for SQ D QO. I cannot think of what Siemens calls their UL classified QO replacement, but would love to see a list, if any, of Siemens breakers classified for other makes, SQ D Homeline is not classified for any other makes.


  7. #7
    Join Date
    Oct 2008
    Location
    Tulsa, OK
    Posts
    544

    Default Re: Siemens breakers in Sqare D panel ill fitting

    Quote Originally Posted by Jim Port View Post
    That would be fine, except the panel shown is a Square D Homeline.
    My BAD! I missed that. Definitely won't work in a Homeline loadcenter.

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