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December 13, 2007 A Penton Media Publication Vol. V No. 23


CONTENTS
406.8 Receptacles in Damp or Wet Locations

What's Wrong Here?

Code Q&A

Code Quiz

EC&M Code Change Conferences


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    406.8 Receptacles in Damp or Wet Locations

    By Mike Holt
    Damp Locations. Receptacles installed outdoors under roofed open porches, canopies, marquees, and the like (and not subject to beating rain or water runoff or in other damp locations) must be installed in an enclosure that is weatherproof when the attachment plug cap isn't inserted and receptacle covers are closed.

    A receptacle installed within an enclosure that is weatherproof when an attachment plug is inserted is also suitable for a damp location. See Art. 100 for the definition of "Location, Damp."

    Wet Locations. All 15A and 20A, 125V and 250V receptacles installed in a wet location must be within an enclosure that is weatherproof even when an attachment plug is inserted. Receptacles rated other than 15A or 20A, 125V or 250V installed in a wet location must comply with (a) or (b):

    1. Wet location cover. A receptacle installed in a wet location, where the load isn't attended while in use, must have an enclosure that is weatherproof with the attachment plug cap inserted or removed.
    2. Damp location cover. A receptacle installed in a wet location for use with portable tools can have an enclosure that is weatherproof when the attachment plug is removed.
    Bathtub and Shower Spaces. Receptacles must not be installed within or directly over a bathtub or shower stall. Receptacles must be located no less than 5 feet from any spas or hot tubs [680.22(A)(1) and 680.43(A)(1)]. Hydromassage bathtubs are treated like bathtubs [680.70].

    Flush Mounting with Faceplate. The enclosure for a receptacle installed in an outlet box that is flush-mounted on a finished surface must be made weatherproof by a weatherproof faceplate that provides a watertight connection between the plate and the finished surface.

    Editor's note: This information was extracted from Mike Holt's textbook, Understanding the National Electrical Code


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    Code Challenge
    What's Wrong Here?
    By Joe Tedesco
    Think you know how this installation violates the NEC? Visit EC&M's Web site to see the answer.

    Hint: Think overexposure


    Code Q&A
    By Mike Holt
    Q. Is it permissible to run heating/air-conditioning duct 4 feet above a panelboard if the ductwork services the room where the panelboard is located?

    Visit EC&M's Web site to see the answer.


    Code Quiz
    By Steven Owen
    Q. In a large electrical room with numerous pieces of equipment rated at 1,200A or more, the question has arisen as to whether panic hardware is or is not required on all of the personnel doors. One personnel door is located 30 feet from the nearest edge of the switchgear, which is rated at 2,000A. The other personnel door is located 3 feet from the nearest edge of the motor control center, which is rated at 1,600A. There is also a roll-up door for moving equipment in and out of the room. Per the 2008 version of the NEC, which one of the following is the correct answer?

    1. All personnel doors must have panic hardware and open in the direction of egress. In this example, it would include both the personnel doors.
    2. All personnel and equipment doors must have panic hardware.
    3. All personnel doors located within 25 feet of electrical equipment rated 1,200A or greater must have panic hardware, and open in the direction of egress. In this example, it would only include the personnel door located within 3 feet of the motor control center.
    4. Section 110.26(C)(3) would not apply in this example because the width of the electrical equipment is not known. This section of the Code applies only to equipment that is rated 1,200A or greater, and more than 6 feet in width.

    Visit EC&M's Web site for the answer and explanation.




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    Shows and Events
    EC&M Code Change Conferences
    Where do you turn when you need accurate information on changes to the National Electrical Code? Acknowledged as the leaders in providing information on the NEC, EC&M magazine and EC&M Seminars have been the preferred sources of this information for more than 60 years. Seven Code change conferences have been scheduled in the fall of 2007. Host cities include: Atlanta, Boston, Dallas, Orlando, Philadelphia, St. Louis, and Seattle.

    As an approved provider with the National Council of Examiners for Engineering and Surveying (NCEES), through its Registered Continuing Education provider Program (RCEPP), professional engineers attending any of our 2008 Code change conferences will receive Professional Development Hours (PDHs), a requirement for re-licensing in many states. The conferences are also approved by every state that has a continuing education requirement for contractors and electricians.

    For additional information on the dates and locations of these events, click here.


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