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  1. #1
    Join Date
    Mar 2007
    Location
    Cape Cod, Massachusetts
    Posts
    574

    Default Generator lock out switch.

    I saw this lock out switch for generator back feed connection.
    Are these code approved?

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    Ken Amelin
    Cape Cod's Best Inspection Services
    www.midcapehomeinspection.com

  2. #2
    Join Date
    Aug 2008
    Location
    Maryland
    Posts
    1,903

    Default Re: Generator lock out switch.

    Looks like a factory breaker interlock. Was the breaker retention device in place on the generator breaker?

    All answers based on unamended National Electrical codes.

  3. #3
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,317

    Default Re: Generator lock out switch.

    Maybe I'm not seeing the photo right, but I don't see where that prevents both being on at the same time.

    Am I just not seeing it?

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,317

    Default Re: Generator lock out switch.

    Quote Originally Posted by Jerry Peck View Post
    Maybe I'm not seeing the photo right, but I don't see where that prevents both being on at the same time.

    Am I just not seeing it?
    I went back and zoomed in on the photo on my computer (I was looking on my phone earlier) and then I could see where raising the lockout up is blocked by the breaker when the main utility power breaker is 'on', and when the main utility power breaker is turned off - the lockout can slide up, which allows the generator breaker to be turned 'on'.

    Hope those screws on the left are not very long ...

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  5. #5
    Join Date
    Aug 2008
    Location
    Maryland
    Posts
    1,903

    Default Re: Generator lock out switch.

    Normally just long enough to get a nut on the inside to hold the bracket.

    All answers based on unamended National Electrical codes.

  6. #6
    Join Date
    Mar 2015
    Location
    NJ
    Posts
    1

    Default Re: Generator lock out switch.

    Quote Originally Posted by Ken Amelin View Post
    I saw this lock out switch for generator back feed connection.
    Are these code approved?
    Manual Transfer Switch Kits | Generator Interlock Kit


  7. #7
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,174

    Default Re: Generator lock out switch.

    Good infö

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

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