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Supporting fire alarm cable to existing fire alarm conduit

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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
    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)

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      #3
      Unless they are part of the same system


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        #4
        Originally posted by Current Eddy View Post
        Unless they are part of the same system
        Code Reference?

        Roger
        Moderator

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          #5
          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
            it is allowed only for certain condition check 300.11(B)

            John.
            My Journey Towards NICET Certification
            Fire Alarm Design Services

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              #7
              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.

              Welcome to The Forum.
              Electricians do it until it Hertz!

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