前言:这是电气金属管——钢的统一NCE、CSA集团和UL标准。它是NMX-J-536-ANCE的第三版，CSA C22的第二版。2第83.1号和UL 797第九版。本版CSA C22。2 No.83.1取代了2004年出版的前一版。本版UL 797取代2004年6月30日出版的前一版。这一协调标准已于2021年3月30日联合修订。为此，CSA集团和UL发布了修订版，日期为2021年3月30日，ANS发布了2021年3月30日的新版。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。范围:1.1这些要求包括电气金属管- 根据CSA C22，钢（EMT）和弯头用作安装电线和电缆的金属线槽。1，加拿大电气规范，第1部分，NOM-001-SEDE，电气安装标准，以及NFPA 70，国家电气规范（见附录A参考项目1）。EMT具有锌、锌基、非金属或其他替代耐腐蚀外部涂层和有机或锌内部涂层。用户有责任为其应用确定合适的产品。1.2附录A参考项目2中列出的标准涵盖了铝电气金属管。

Preface:This is the harmonized ANCE, CSA Group, and UL standard forElectrical Metallic Tubing – Steel. It is the third edition of NMX-J-536-ANCE, the second edition of CSA C22.2 No. 83.1, and the ninth edition of UL 797. This edition of CSA C22.2 No. 83.1 supersedes the previous edition published in 2004. This edition of UL 797 supersedes the previous edition published June 30, 2004. This harmonized standard has been jointly revised on March 30, 2021. For this purpose, CSA Group an d UL are issuing revision pages dated March 30, 2021, and ANCE is issuing a new edition dated March 30, 2021.This standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope:1.1These requirements cover electrical metallic tubing - steel (EMT) and elbows 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). EMT 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 users' responsibility to determine the appropriate product for their application.1.2Aluminum electrical metallic tubing is covered by the standards listed in Reference Item No. 2, Annex A.