Conduit Bushing and NM Cable

[Gregory A. Liebig]

I remember reading something about conduit is required to have bushings at fixtures, junction boxes, etc. But what about this situation when it is used to protect NM cable below the ceiling in a basement? The other picture is the bottom of an exterior luminary post from the inside of the garage.

I don't know if the EMT was reamed to eliminate sharp edges, etc. Am I being too picky?

[Robert Meier]

Take a look here:

334.15 Exposed Work.
In exposed work, except as provided in 300.11(A), cable shall be installed as specified in 334.15(A) through (C).
(A) To Follow Surface. Cable shall closely follow the surface of the building finish or of running boards.
(B) Protection from Physical Damage. Cable shall be protected from physical damage where necessary by rigid metal conduit, intermediate metal conduit, electrical metallic tubing, Schedule 80 PVC conduit, or other approved means. Where passing through a floor, the cable shall be enclosed in rigid metal conduit, intermediate metal conduit, electrical metallic tubing, Schedule 80 PVC conduit, or other approved means extending at least 150 mm (6 in.) above the floor.
Type NMC cable installed in shallow chases or grooves in masonry, concrete, or adobe, shall be protected in accordance with the requirements in 300.4(F) and covered with plaster, adobe, or similar finish.
(C) In Unfinished Basements and Crawl Spaces. Where cable is run at angles with joists in unfinished basements and crawl spaces, it shall be permissible to secure cables not smaller than two 6 AWG or three 8 AWG conductors directly to the lower edges of the joists. Smaller cables shall be run either through bored holes in joists or on running boards. NM cable installed on the wall of an unfinished basement shall be permitted to be installed in a listed conduit or tubing or shall be protected in accordance with 300.4. Conduit or tubing shall be provided with a suitable insulating bushing or adapter at the point the cable enters the raceway. The NM cable sheath shall extend through the conduit or tubing and into the outlet or device box not less than 6 mm (¼ in.). The cable shall be secured within 300 mm (12 in.) of the point where the cable enters the conduit or tubing. Metal conduit, tubing, and metal outlet boxes shall be connected to an equipment grounding conductor.

[Gregory A. Liebig]

Thanks! That says it all. I'm working on this report now. A good reason not to issue on-site reports in my opinion.

I ran into this this one (picture attached) on Friday. This receptacle was added above a hot water radiator to power a through-the-wall air conditioner. Again, another situation of exposed work. I think there is something about receptacles being located above electric baseboard heaters but I don't remember anything regarding hot water baseboard heaters. I noted this one as a safety concern in that report.