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(B) Corrosion Environments

National Electrical Code 2020 of Illinois > 3 Wiring Methods and Materials > 342 Intermediate Metal Conduit: Type IMC > 342.10 Uses Permitted > (B) Corrosion Environments
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IMC, elbows, couplings, and fittings shall be permitted to be installed in concrete, in direct contact with the earth, or in areas subject to severe corrosive influences where protected by corrosion protection approved for the condition.

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