romex going floor to floor through a metal bottom plate. The wire is being protected by a 6" piece of PVC. I don't feel that this meets the code as its not a "listed" Grommet or Bushing. What do you all think?

I think that 334.15(b) permits the installation for NM cable passing through the floor, since 300.4(b)(1) only requires bushings and grommets to be listed for use when MN cable passes through metal studs.

334.15(b)

I believe that there is something in the Code that requires that -- not PVC mind you but an emt sleeve or other suitable material for insure for proper firestopping.

I will look into this and post back.

Mike just got it. We posted back at the same time. I wasn't aware from memory that non-metallic was in there but it is.

more clarification. Single family residence. The NM is going from the ceiling cavity below into the wall cavity above by passing through a metal framing member. I believe that 334.15(b)is not really applicable here as 334.15 main heading is for exposed work. This is concealed work and thus does not need the conduit BUT requires a listed bushing for passing through the metal stud even though there is a piece of conduit. Maybe I'm being nit picky but.....

Ok now that is a different subject, and I think both Nick and I got the wrong picture as to what you were pointing out. Thanks for the clarification, and yes I agree with you, 300.4 will apply and a listed bushing or grommet is required.

In my opinion, 300.4(B)(1) does not apply as the NM is not passing through the metal framing memeber, the piece of conduit is. The NM is passing through the NM.

The intent of the section is to protect the NM cable from abrasion or cuts from sharp metal edges. The reason the listing requirement was added to the 2002 NEC was that unevaluated methods were being employed in the field such as duct tape. RNC has been evaluated as a protective "sleeve" for NM and should be permitted in leu of a listed grommet or bushing.

I see no hazard that arises from the method you describe and think it should be approved.

At a certain point you need to ask, where is the hazard if the hole in the wood deck is centered and some distance away from the edge of the punched hole in the stud, even without the grommet/PVC. I can see the problem with installing a grommet. The metal is flat against the plywood. What holds the grommet in place? They snap into the metal, protruding on both sides. You would need an unlisted way to install the grommet. I would give the installer a break for trying to be safe with his PVC and go look for something that will burn houses and kill babies.

Good question. I am going to think on this while I soak in the hot tub. Post back later.

It boils down to:

The code is the code is the code. So is he being too picky???

You are correct Nick, the code is the code, and is that too picky? It may in fact be ok, it may work just fine without any problems, but.... it's just not one of the methods permitted by that code section in 300.4.