Preface This is the harmonized ANCE, CSA Group, and UL standard for Wire Connectors. It is the third edition of NMX-J-543-ANCE, the fifth edition of CSA C22.2 No. 65, and the second edition of UL 486A-486B. This edition of NMX-J-543-ANCE cancels the previous edition published in 2008. This edition of CSA C22.2 No. 65 supersedes the previous edition published in 2003. This edition of UL 486A-486B supersedes the previous edition published in 2003. Scope 1.1 This Standard applies to single-polarity connectors for use with all alloys of copper or aluminum, or copper-clad aluminum conductors, or all three, for providing contacts between current-carrying parts, in accordance with the Canadian Electrical Code, Part I, C22.1, in Canada, the National Electrical Code, NFPA-70, in the United States of America, or the Standard for Electrical Installations, NOM-001-SEDE, in Mexico. Note: Copper-clad aluminum conductors are for use only in the United States in accordance with the National Electrical Code, NFPA 70.