ARTICLE 342. INTERMEDIATE METAL CONDUIT: TYPE IMC


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ARTICLE 342. INTERMEDIATE METAL CONDUIT: TYPE IMC
ARTICLE 342. INTERMEDIATE METAL CONDUIT: TYPE IMCThis article covers a conduit with wall thickness less than that of rigid metal conduit but greater than that of EMT. Called "IMC," this intermediate metal conduit uses the same threading method and standard fittings for rigid metal conduit and has the same general application rules as rigid metal conduit. Intermediate metal conduit actually is a lightweight rigid steel conduit which requires about 25 percent less steel than heavy-wall rigid conduit. Acceptance into the Code was based on a UL fact-finding report which showed through research and comparative tests that IMC performs as well as rigid steel conduit in many cases and surpasses rigid aluminum and EMT in most cases. The wiring method must be listed (Sec. 342.…
Citation
Frederic P. Hartwell; Joseph F. McPartland; Brian J. McPartland: McGraw-Hill's National Electrical Code 2017 Handbook, 29th Edition. ARTICLE 342. INTERMEDIATE METAL CONDUIT: TYPE IMC, Chapter (McGraw-Hill Professional, 2017), AccessEngineering Export