Announcement

Collapse
No announcement yet.

210.12(B) Exception: AFCI 6ft rule

Collapse
This topic is closed.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #16
    In Washington we had a state rule that limited the length of unfused service entrance conductors in a building to 15 feet of conductor. This proved to be difficult to measure, so it was changed to 15 ft of raceway.
    Moderator-Washington State
    Ancora Imparo

    Comment


      #17
      I was a bit concerned that the panel was required to be moved from a landing area -- if there is compliant clear space on a landing is it really a step?
      I do find it a bit disturbing that an inspector is required to measure the make up inside a panel & device box -- you would be eliminating 2-3' on every installation, I use the KISS rule as most measurements are from edge of water/basin/storage space/front of panel/ which would be consistent with jbox to jbox -- show me where the major difference in 9' to 6' as an extension is a life safety factor . There is an option to run up to 70' of 12-2nm without any protection to first device so why would a few extra feet be so critical???

      KISS
      CircuitRyder --- Unfortunately not all good ideas are code enforceable.

      Comment


        #18
        Originally posted by tom baker View Post
        In Washington we had a state rule that limited the length of unfused service entrance conductors in a building to 15 feet of conductor. This proved to be difficult to measure, so it was changed to 15 ft of raceway.
        Now you have people that think there is no limits on cable methods right?
        I live for today, I'm just a day behind.

        Comment


          #19
          Originally posted by mwm1752 View Post
          There is an option to run up to 70' of 12-2nm without any protection to first device so why would a few extra feet be so critical???

          KISS

          That is only when using a breaker and device that are listed together. There is no such device afaik.. Anyway I agree 6' is too short even without counting the wire inside the enclosure
          They say I shot a man named Gray and took his wife to Italy
          She inherited a million bucks and when she died it came to me
          I can't help it if I'm lucky

          Comment


            #20
            Originally posted by Dennis Alwon View Post
            That is only when using a breaker and device that are listed together. There is no such device afaik.. Anyway I agree 6' is too short even without counting the wire inside the enclosure


            Brain fart Dennis thanks for keeping me in line
            CircuitRyder --- Unfortunately not all good ideas are code enforceable.

            Comment


              #21
              Originally posted by infinity View Post
              The current wording allows an extension of up to 6' of conductor if you change that to 6' of raceway then the conductors could be of any length.
              It would more clearly reference the intent of the ROP if it was based on raceway length, Tom Baker also brought up the 15' "Raceway" for non fused service wires in washington state; same same.

              Comment


                #22
                Originally posted by lavacano View Post
                It would more clearly reference the intent of the ROP if it was based on raceway length, Tom Baker also brought up the 15' "Raceway" for non fused service wires in washington state; same same.
                If you wrote the proposal for 6' of raceway then you would eliminate the use of nm, mc and similar cables.
                They say I shot a man named Gray and took his wife to Italy
                She inherited a million bucks and when she died it came to me
                I can't help it if I'm lucky

                Comment


                  #23
                  Originally posted by Dennis Alwon View Post
                  If you wrote the proposal for 6' of raceway then you would eliminate the use of nm, mc and similar cables.
                  Southwire Romex® Brand SIMpull® NM-B cable is manufactured as 2, 3, or 4 conductor cable
                  What would you call it then "raceway length or length of the outermost sheathing of multi conductor cable"?

                  Comment


                    #24
                    All I am saying is you cannot limit it to raceway. The problem is that they added 6' to my proposal but did not explain whether that 6' included the wiring inside the panel and jb or did they mean the length of the wiring between enclosures.

                    So, in most cases we are not dealing with raceways but rather with cable. NM and MC are not raceways but are cable assemblies. If you add conduit then, IMO this section covers it. Now I know it doesn't exactly state what we are talking about but I think that rule should be added to what I had proposed.

                    (5) If RMC, IMC, EMT, Type MC, or steel-armored Type
                    AC cables meeting the requirements of 250.118, metal
                    wireways, metal auxiliary gutters, and metal outlet and
                    junction boxes are installed for the portion of the
                    branch circuit between the branch-circuit overcurrent
                    device and the first outlet, it shall be permitted to install
                    a listed outlet branch-circuit type AFCI at the first outlet
                    to provide protection for the remaining portion of
                    the branch circuit.
                    They say I shot a man named Gray and took his wife to Italy
                    She inherited a million bucks and when she died it came to me
                    I can't help it if I'm lucky

                    Comment

                    Working...
                    X