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    Residential Electric Panel Clearance

    Does the following Article and provisions apply to a resedential elecrical service.
    The electrical panel is located in a 6 foot high basement; new construction.

    Article 408 Switchboards, Switchgear and Panelboards

    408.18 Clearances

    (B) Clearances around switchboards and switchgear shall comply with the provisions of 110.26.

    110.26(A)(4) Working Space About Electrical Equipment — Limited Access

    (d) The space in front of the enclosure shall comply with the depth requirements of Table 110.26(A)(1). The maximum height of the working space shall be the height necessary to install the equipment in the limited space. A horizontal ceiling structural member or access panel shall be permitted in this space.

    We would like to verify that such an installation meets the requirements of the code cited.

    Thank you

    #2
    I would say no. The key words are "is required by installation instructions or function to be located in a space with limited access". The panel does not need to be in that location. The commentary in the 2017 Handbook gives an example of duct heaters.

    If this was an existing dwelling then 110.26(3) Exc.1 would allow this.

    Comment


      #3
      Originally posted by Leespark57 View Post
      I would say no. The key words are "is required by installation instructions or function to be located in a space with limited access". The panel does not need to be in that location. The commentary in the 2017 Handbook gives an example of duct heaters.

      If this was an existing dwelling then 110.26(3) Exc.1 would allow this.
      I agree. Unless you could prove there is no other place in the house where it could be legally installed I'd say it's not a compliant installation.
      JMO. I await other opinions.
      Sometimes I don't know whether I'm the boxer or the bag.

      Comment


        #4
        Why wouldn't it be a compliant installation?

        If that particular code article did apply, I don't see anything in that code article that seems to be a violation for a panel to be installed in a 6' high basement.


        JAP>

        Comment


          #5
          The point being made in posts 2 and 3 is that it is very likely that that article does not apply. The key word is "required." Can you tell us in what sense the panel is "required" to be installed in the location you describe? Is the selection of that location based on any manufacturer's instruction, or on the function that the panel will serve? I strongly suspect it is not. Rather, my guess is that the builder chose that location as a matter of convenience, perhaps even as a matter of saving them money. That would not be enough to bring the article you cite into play.
          Charles E. Beck, P.E., Seattle
          Comments based on 2017 NEC unless otherwise noted.

          Comment


            #6
            Just an aside is a 6' high basement really a basement? I thought that the building code had a higher minimum height for a new dwelling unless it's considered a crawl space.
            Rob

            Moderator

            All responses based on the 2014 NEC unless otherwise noted

            Comment


              #7
              Originally posted by infinity View Post
              Just an aside is a 6' high basement really a basement? I thought that the building code had a higher minimum height for a new dwelling unless it's considered a crawl space.
              It was originally planned to be a full foundation.
              There was a 7' groundwater table with no allowable means of control.
              Building department considers 5' or less a crawl space.

              Comment


                #8
                Originally posted by hayeska View Post
                It was originally planned to be a full foundation.
                There was a 7' groundwater table with no allowable means of control.
                Building department considers 5' or less a crawl space.
                5' good to know, regardless the panel cannot go in the basement without the proper clearance.
                Rob

                Moderator

                All responses based on the 2014 NEC unless otherwise noted

                Comment


                  #9
                  Originally posted by hayeska View Post
                  Does the following Article and provisions apply to a resedential elecrical service.
                  The electrical panel is located in a 6 foot high basement; new construction.

                  Article 408 Switchboards, Switchgear and Panelboards

                  408.18 Clearances

                  (B) Clearances around switchboards and switchgear shall comply with the provisions of 110.26.

                  110.26(A)(4) Working Space About Electrical Equipment — Limited Access

                  (d) The space in front of the enclosure shall comply with the depth requirements of Table 110.26(A)(1). The maximum height of the working space shall be the height necessary to install the equipment in the limited space. A horizontal ceiling structural member or access panel shall be permitted in this space.

                  We would like to verify that such an installation meets the requirements of the code cited.

                  Thank you
                  Lets think about what that says.

                  Let's assume 6 feet working height is acceptable for the moment, wouldn't that mean that a panel less than 6 feet high doesn't need to apply what is mentioned there? There is no minimum height it must be mounted at.

                  Now if you had a 7 foot tall panel in this 6 foot high space you might be able to have the top be within the overhead framing members. Not too likely to run into that tall of a panel on average dwelling though.

                  Just a thought.
                  I live for today, I'm just a day behind.

                  Comment

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