The NEC Articles covering conduit start with Art. 342 and end with Art. 356. The first four conduits are the metal ones: You can use IMC and RMC in all atmospheric conditions and occupancies [Sec. 342 ...

Test your NEC knowledge.Q. What is the maximum number of conductors allowed by the Code to be installed in rigid metal conduit (RMC)? See the answer below. A. Raceways must be large enough to permit ...