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Thread: mounting heights

  1. #1
    Join Date
    Feb 2007
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    4

    mounting heights

    Im not sure which area i should post this question in but if im in the wrong spot, i apologize.

    does anyone know what the standard mounting heights of light switches should be (min-max)???

    i have looked in the IBC and the ADA but im not coming across anything?

    what about Exit signs/strobes/horn strobe devices??? mounting heights?

    thank you in advance for the time!!

  2. #2
    Join Date
    Dec 2006
    Location
    Chapel Hill, NC
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    Quote Originally Posted by reds_21
    does anyone know what the standard mounting heights of light switches should be (min-max)???
    There is no minimum or standard specified by the NEC. I usually set my switches at 43 to the bottom of the box but the older method (around here, anyway) was 49" to the bottom.

    Quote Originally Posted by reds_21
    what about Exit signs/strobes/horn strobe devices??? mounting heights?
    I am unaware of any requirements on exit signs. That is probably covered in the building code.

  3. #3
    Join Date
    Sep 2006
    Location
    Massachusetts
    Posts
    361

    Hieghts

    Quote Originally Posted by reds_21
    Im not sure which area i should post this question in but if im in the wrong spot, i apologize.

    does anyone know what the standard mounting heights of light switches should be (min-max)???

    i have looked in the IBC and the ADA but im not coming across anything?

    what about Exit signs/strobes/horn strobe devices??? mounting heights?

    thank you in advance for the time!!
    The "Peoples Republic of Massachusetts" adopted its 521 CMR 6.5, forward reach, 521 CMR 6.6, side reach.

    Recpt's on walls 15" to 48" above the floor, measured at the centerline of the lowest recpt.


    Sw's: 18" from an interior corner (location)

    48" forward reach to allow approach to an object (highest), 15" the minimium low forward reach.

    If the clear floor space allows parallel approach by the person in a wheelchair max side reach 54" and the low side reach shall be no more the 9".


    Hope this may help its from our states Architectual Access Board 521 CMR

  4. #4
    Join Date
    Feb 2007
    Posts
    4
    thank you for the help lowryder88h and Dennis Alwon!!!

    reds_21

  5. #5
    Join Date
    Nov 2006
    Posts
    10
    sw is usually 4' center and horns/strobes i seen at 80" center to 1' below ceiling height (9'-10')

  6. #6
    Join Date
    Oct 2006
    Posts
    156
    If you put your switches at 48" AFF to the center and receptacles 18" AFF top the center then you will be OK with ADA guidelines.

  7. #7
    Join Date
    Apr 2006
    Location
    Simi Valley, CA
    Posts
    7,108
    The California ADA calls for no higher than 48" to the center of the operating handle. I always put mine at 42" because if you walk into a room and stick your finger out like you're going to turn on the light that's right about where it is.
    I can build anything you want if you draw a picture of it on the back of a big enough check.

    There's no substitute for hard work....but that doesn't mean I'm going to give up trying to find one.

    John Childress
    Electrical Inspector
    IAEI / CEI / C10
    Certified Electrical Inspector

  8. #8
    Join Date
    Nov 2005
    Location
    Virginia
    Posts
    348
    Quote Originally Posted by reds_21
    Im not sure which area i should post this question in but if im in the wrong spot, i apologize.

    does anyone know what the standard mounting heights of light switches should be (min-max)???

    i have looked in the IBC and the ADA but im not coming across anything?

    what about Exit signs/strobes/horn strobe devices??? mounting heights?

    thank you in advance for the time!!
    There is no NEC requirement for switch height. It's a topic that has been discussed many times. 48" AFF is a popular answer, sometimes to the center, sometimes to the bottom of the box. But there are almost as many answers as there are replies.

    The exit signs, lights, etc are governed by building and life safety codes, often with state or local amendments. Some locations now require satellite lights near floor level for crawling to an exit below the smoke.

    You need to talk to your local AHJ and/or Fire Marshal to get appropriate information for your locale.
    You may be whatever you resolve to be - Gen. T. J. Jackson
    (Warning: I'm just an electrical engineer, not an electrician. No DIY advice is solicited.)

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