Preface This is the harmonized ANCE, CSA Group, and UL standard for electrical rigid metal conduit – steel. It is the second edition of NMX-J-534-ANCE, the second edition of CSA C22.2 No. 45.1, and the 14th edition of UL 6. This harmonized standard has been jointly revised on September 27, 2019. For this purpose, CSA Group and UL are issuing revision pages dated September 27, 2019, and ANCE is issuing a new edition dated September 27, 2019. Scope 1.1 These requirements cover electrical rigid metal conduit - steel (ERMC-S), elbows, couplings, and nipples for use as a metal raceway for installation of wires and cables in accordance with CSA C22.1, Canadian Electrical Code, Part 1, NOM-001-SEDE, Standard for Electrical Installations, and NFPA 70, National Electrical Code (see Reference Item No. 1, Annex A). ERMC-S is provided with a zinc, zinc-based, nonmetallic, or other alternate corrosion-resistant exterior coating and an organic or zinc interior coating. It is the user\'s responsibility to determine the appropriate product for their application. 1.2 Non-ferrous and stainless steel conduit are covered by the standards listed in Reference Item No. 2, Annex A.