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Thread: Supporting fire alarm cable to existing fire alarm conduit

  1. #1
    Join Date
    May 2018
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    Pulaski ny
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    Supporting fire alarm cable to existing fire alarm conduit

    Is it acceptable to support Plenum rated fire alarm cable to an existing dedicated for alarm conduit?

  2. #2
    Join Date
    Feb 2003
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    Illinois
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    No. 760.46 references 300.11 and 300.11(C) says raceways cannot be used to support cables.
    Don, Illinois
    (All code citations are 2017 unless otherwise noted)

  3. #3
    Join Date
    Nov 2015
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    Merchantville, Camden County New Jersey
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    Unless they are part of the same system


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  4. #4
    Join Date
    Feb 2003
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    Fl
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    Quote Originally Posted by Current Eddy View Post
    Unless they are part of the same system
    Code Reference?

    Roger
    Moderator

  5. #5
    Join Date
    Nov 2015
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    Merchantville, Camden County New Jersey
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    Quote Originally Posted by roger View Post
    Code Reference?

    Roger
    760.143 Support of Conductors.
    Power-limited fire alarm circuit conductors shall not be strapped, taped, or attached by any means to the exterior of any conduit or other raceway as a means of support.

    Sorry couldn’t find it


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  6. #6
    Join Date
    Dec 2012
    Location
    California
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    14
    it is allowed only for certain condition check 300.11(B)

    John.
    My Journey Towards NICET Certification
    Fire Alarm Design Services

  7. #7
    Join Date
    Apr 2009
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    Williamsburg, VA
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    Technically speaking, there may be some small cases where you could strap fire alarm cable to conduit surrounding fire alarm cable. Practically speaking if somebody put the original Cable in RGS or IMT, then I think it stands to reason that any additional fire alarm cable should be inside the conduit and not strapped to it.

    From a personal perspective, I learn the first week I was running cable to run independent support for it, do not strap it to existing plumbing, sprinkler pipe, electrical conduit, ceiling grid, anything. Support it independently.

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    Electricians do it until it Hertz!

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