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Thread: Sealtite in class I div I location

  1. #1
    Join Date
    Nov 2007

    Sealtite in class I div I location

    Can you use sealtite in class I div I location?

    And IF a Rosemount 3051 Transmitter is factory sealed, do you have to use a poured seal. :confused:

  2. #2
    Join Date
    Jul 2006
    SE USA as far as you can go
    I do not believe that "sealtite" e.g. Anaconda brand liquidtite metal flexible conduit comes in a UL listed offering suitable for Class 1 Div 1.

    Class 1 Div 2, yes.
    "Just because you're paranoid, doesn't mean they're not out to get you"

  3. #3
    I believe you do need a seal within 18".the housing it self is rated for class-1 div-1 when you use a seal.
    i was looking at the manual and it said to remove power before servicing the transmitter so that is anther indication that it requires a seal.
    you may not need one if it's power is being supplied by way of an intrinsically safe barrier.
    i would probably call rosemount.

  4. #4
    Join Date
    Feb 2003
    If the device is marked as factory sealed, an additional seal is not required in the raceway at the device. See 501.15(A)(1) Exception(3).
    Don, Illinois
    Ego is the anesthesia that deadens the pain of stupidity. Dr. Rick Rigsby
    (All code citations are 2017 unless otherwise noted)

  5. #5
    Join Date
    Jul 2004
    Texas by the Gulf, geat crab, great shrimp
    Quote Originally Posted by Suckerbill
    1. Can you use sealtite in class I div I location?

    2. And IF a Rosemount 3051 Transmitter is factory sealed, do you have to use a poured seal. :confused:
    a.) If you use rigid conduit for explosionproof rated installation, then field fabricated sealtight flexible conduit is not acceptable. You must use XP rated couplings, ex.: page 170.
    b.) You can use field fabricated flexible conduit extention if the wiring method allows for it, such as for intrinsically safe wiring.

    2. (Presume that you are still considering Class I, Division 1 area. fro this question)
    a.) Incomplete catalog number does not allow me to give a definitie answer, as the catalog number would contain information what approval the device has and accordingly the installation method can difer.
    b.) if it is rated intrinsically safe, then no seal is necessary.
    c.) if it is rated explosionproof and rigid conduit installation is required then seal within 18" is only required if the device specifically states with the approving agency's logo "Factory sealed device, no external seal is requied", not the manufacturer's description that may refer to sealed, potted electronic components that refers to the resistance to moisture or chemical resistance, but not that the device is UL/FM, etc. tested for the above level.

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