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    Fire Alarm Conduit

    Scenario. Fire alarm is in full conduit and adjacent speaker and strobes have to be on separate ckts.

    Question, wouldn’t putting a 4” box above the device alleviate you having to run 2 conduits from the device(in and out)?

    What’s the more practical way?
    Attached Files

    #2
    why is there 120V running to these devices?

    Comment


      #3
      Originally posted by cdslotz View Post
      why is there 120V running to these devices?
      There is not. Why do you say that?

      Comment


        #4
        Originally posted by mstrlucky74 View Post
        Scenario. Fire alarm is in full conduit and adjacent speaker and strobes have to be on separate ckts.

        Question, wouldn’t putting a 4” box above the device alleviate you having to run 2 conduits from the device(in and out)?

        What’s the more practical way?
        Sounds good to me. Nothing says the "in" and "out" conductors/cables can't be in the same raceway.
        I live for today, I'm just a day behind.

        Comment


          #5
          Certain systems (I believe Class A) only allow up to 10' of the supply and return loop wiring to be a common raceway.
          Rob

          Moderator

          All responses based on the 2014 NEC unless otherwise noted

          Comment


            #6
            Originally posted by mstrlucky74 View Post
            Scenario. Fire alarm is in full conduit and adjacent speaker and strobes have to be on separate ckts.

            Question, wouldn’t putting a 4” box above the device alleviate you having to run 2 conduits from the device(in and out)?

            What’s the more practical way?
            Your saying separate ckts, not separate conduits.... One pipe, two circuits...

            Gary

            Comment


              #7
              Originally posted by Gary11734 View Post
              Your saying separate ckts, not separate conduits.... One pipe, two circuits...

              Gary
              That's what I was thinking, unless the project spec calls for a separate pipe for one of them. The Port Authority of NY/NJ is famous for this.

              Comment


                #8
                Originally posted by infinity View Post
                Certain systems (I believe Class A) only allow up to 10' of the supply and return loop wiring to be a common raceway.
                True.

                Comment


                  #9
                  Originally posted by cdslotz View Post
                  why is there 120V running to these devices?
                  The 15 and 30 denotes the Candela setting for each device

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