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ANSI/CAN/UL
ANSI/CAN/UL/ULC
CAN/UL
ALL UL STDS for CANADA
1.1 These requirements cover aluminum and stainless steel electrical metallic tubing (EMT) and elbows in trade sizes 3/8 – 4 (12 – 103)3/8 – 6 (12 – 155) for use as a metal raceway for the installation of wires and cables in accordance with the National Electrical Code. The values in parentheses are metric designators of tubing.
1.2 Tubing provided with an exterior coating of zinc or a zinc-based, nonmetallic, or other alternate corrosion-resistant material and an interior coating of an organic or zinc material, is covered by the Standard for Electrical Metallic Tubing – Steel, UL 797.
This revision of ANSI/UL 797A dated November 17, 2021 includes Electrical Metallic Tubing, addition of trade sizes 5” & 6” in Aluminum: 1.1, 4.4, Table 6.1, Table 6.2, Table 6.3, and Table 7.1.
RevisionsRed Line Std. (6)
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