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What are Steel Conduit and Electrical Metallic Tubing Section?

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What are Steel Conduit and Electrical Metallic Tubing Section?

Steel conduit and electrical metallic tubing (EMT) refers to the steel-based durable enclosures that route individual electrical wiring conductors in a building or structure and protect the wires from impact, moisture, and chemical vapors.


Conduit systems are classified by wall thickness, mechanical stiffness, and material used. Rigid metal conduit (RMC) is a thick-walled threaded tubing, usually made of coated steel, stainless steel, or aluminum. Galvanized rigid conduit (GRC) is galvanized steel tubing, with a tubing wall that is thick enough to allow it to be threaded. Intermediate metal conduit (IMC) is a thinner, lighter-weight version of RMC. Polyvinyl chloride (PVC)–coated steel conduit is used for highly corrosive environments. Related products include conduit and associated elbows, threaded couplings, and nipples.


Since conduit must be installed in accordance with the National Electrical Code® (NEC) and all applicable local regulations, Members develop proposals for the NEC, International Code Council codes, and other codes.


Applications:

Direct encasement in concrete

Electrical and communication outlet installation the middle of large open areas

Protecting conductors against fire damage

Protecting sophisticated control systems wiring

Shielding sensitive circuits from electromagnetic fields (EMF) and electromagnetic interference (EMI), and preventing emission of such interference from enclosed power cables

Waterproof or submersible conduit system

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