This is the common ANCE, CSA, and UL standard for Enclosed and Dead-Front Switches. It is the
Second edition of NMX-J-162-ANCE, the Seventh edition of CSA C22.2 No. 4, and the Thirteenth edition
of UL 98. This edition of CSA C22.2 No. 4 supersedes the p
CSA C22.2 No.4-04 UPD 1-2004 history
2004CSA C22.2 No.4-04 UPD 1-2004 Enclosed and Dead-Front Switches Second Edition; Update No 1: 04/2006; Update No 2: July 2006