An unthreaded thinwall raceway of circular cross section designed forthe physical protection and routing of conductors and cablesand foruse as an equipment grounding conductor when installed utilizingappropriate fittings. EMT is generally made ofsteel (ferrous) with protective coatings or aluminum (nonferrous).
EMTFittings are set-screw and compression type and used to join EMT conduit to abox or enclosure. EMT does not have any threads. They can be die castor steel depending on job specs
1.EMTstands for “Electrical Metal Tubing”.
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2.EMTfittings are sold from ½ thru 4”, EMT is not manufactured past 4”.
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3.EMTfittings are UL 514BListedand meet NEMA/ANSI Specifications (Industry Standard).
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4.EMTfittings are manufactured in Zinc, Steel or plastic.
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5.EMT combinationcouplingscan also join otherstypes of conduit like Rigid, Liquidtight or Flex.
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6.EMTfittings are attached to raceway byset-screws or compression type nuts withgland rings.
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7.EMTelbows are commonly referred to as “Sweeps”.
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8.EMTand fittings are used primarily for indooruse.
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9.EMTconduit is commonly referred to a thin walled conduit.
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10.EMTconduit 2-1/2” thru 4” has the same outer dimensions as RMC, but fittings mustbe approved by UL for dual applications.
