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Thread: What is the code citation dealing with strapping conduit to rafters?

  1. #1
    Join Date
    May 2018
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    Raleigh, NC USA
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    What is the code citation dealing with strapping conduit to rafters?

    I work for a residential PV installation company. We never strap conduit (which has always been Flexible Metal Conduit) to the rafters of an attic that we are running through. However, I was told that it's not a problem if it's directly beneath the PV array. What is the Code Citation for this?

    Thanks!

  2. #2
    Join Date
    Dec 2011
    Location
    Ocala, Florida, USA
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    Quote Originally Posted by Aweb591 View Post
    I work for a residential PV installation company. We never strap conduit (which has always been Flexible Metal Conduit) to the rafters of an attic that we are running through. However, I was told that it's not a problem if it's directly beneath the PV array. What is the Code Citation for this?

    Thanks!
    There is a code that doesn't allow it to be strapped within 1 1/2" of the roof deck, but that is all that I am aware of. that code is 300.4(E)


    I know what I don't know, and I know where to go to find it!

  3. #3
    Join Date
    May 2011
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    4,626
    I believe 690.31 (G) in the 2017 code. Numbering has changed over the years.

    Only applies to DC circuits, and is not a problem if the rafters are 2x10 or larger. Code is 10" from roof deck surface.

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