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Thread: Subpanel in attached garage adjacent to living space

  1. #1
    DIY Junior Member Widgelet's Avatar
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    Default Subpanel in attached garage adjacent to living space

    I'm adding a subpanel in an attached garage, adjacent to living space, a common wall. I'm in unincorporated Snohomish County.

    what are the rules regarding placing a subpanel in an attached garage, in or on a common wall with adjacent living space?

    Thanks!

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    Pretty much the same as a subpanel placed anywhere. Some, but by no means all: fed with a four-wire cable, neutral and ground bus bars separated, access space in front, above, and to the sides (don't remember the numbers).
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    Electrical Contractor/Instructor jwelectric's Avatar
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    Quote Originally Posted by jadnashua View Post
    Pretty much the same as a subpanel placed anywhere. Some, but by no means all: fed with a four-wire cable, neutral and ground bus bars separated, access space in front, (36 inches) above,(6 1/2 feet) and to the sides(30 inches) (don't remember the numbers).
    yes you do see it is in red

  4. #4
    DIY Senior Member kreemoweet's Avatar
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    There may be a fire rating requirement on that wall. I'm sure your county building officials stand ready to answer your questions on that subject.

  5. #5
    Retired Defense Industry Engineer jadnashua's Avatar
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    If the wall between the garage and the house is a firewall (likely unless it is really old), then you may want to surface mount it rather than install flush (in the wall) mount. You need to be careful about the wire penetrations in the wall to maintain a fire rating as well. How you do that can get more involved.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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