teqniqal
Member
- Location
- Fort Worth,TX
I have looked-over the NEC Article 330 and other sections for definitions of ‘wet locations’ and from what I see, it is 300.50(B) Wet Locations that says "the interior of . . . raceways installed underground shall shall be considered to be wet locations". Also, Article 100 Definition of ‘Location-Wet’ is clear that ‘in-slab’ is basically the same as ‘underground’ (although to me this is two different things). 352.10(A) and (G) permits PVC conduits to be installed in concrete floor slabs, and (D) in ‘wet locations’, with the caveat that “they shall be installed and equipped so as to prevent water from entering the conduit.” 330.10(7) says MC can be used in ‘Any raceway”, so it seems to me that the PVC conduit creates the ‘dry location’ that is required for the MC cable if it is in the slab (not under it) and it is sealed against moisture (which the joints should be).
So the opinions I am looking for are regarding the installation of MC in PVC conduits run in a slab. We don't want to direct bury the MC in the slab, and we don't want to use liquid-tight MC. Thoughts?
So the opinions I am looking for are regarding the installation of MC in PVC conduits run in a slab. We don't want to direct bury the MC in the slab, and we don't want to use liquid-tight MC. Thoughts?