Steel conduit has been in use as a “raceway system” for electrical conductors since the early 1900s. The wall thickness and strength of steel make metal conduit the wiring method recognized as ...
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 ...
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