cwilkes
Member
- Location
- Rockledge, Fl
We recently had an install of GRC conduit running underground into a Class I Div II aircraft hangar. During the course of construction the conduits were inadvertently cut off close to the curb level, approx 8" AFF. This caused the need for couplings to be within the first 18" of the Class I Div II location. Considering that the conduits were to close to the ground to now thread, we used GRC compression couplings under the mis-interpretation of 501.10B(4) Boxes & Fittings where it states fittings do not have to be explosion proof. Obviously, threadless couplings are not explosion proof.
Considering that the conduits are to short to thread, we asked the inspector if we could simply concrete encase them under 2" of concrete where they leave the floor. According to 230.6 (2)
230.6 Conductors Considered Outside of the Building
Considering that the conduits are to short to thread, we asked the inspector if we could simply concrete encase them under 2" of concrete where they leave the floor. According to 230.6 (2)
230.6 Conductors Considered Outside of the Building
- 230.6(2) Where installed within a building or other structure in a raceway that is encased in concrete or brick not less than 2in thick.