前言这是金属电缆槽系统的协调CSA集团和NEMA标准。这是CSA C22的第四版。2第126.1号，取代2009年、2002年和1998年出版的先前版本，以及第六版NEMA VE 1，取代2009年出版的先前版本。范围本标准规定了根据加拿大电气规范（CE规范）第一部分和国家电气规范（NEC）设计的金属电缆槽和相关配件的要求。

PrefaceThis is the harmonized CSA Group and NEMA standard for Metal Cable Tray Systems. It is the fourth edition of CSA C22.2 No. 126.1, superseding the previous editions published in 2009, 2002, and 1998, and the sixth edition of NEMA VE 1, superseding the previous edition published in 2009.ScopeThis standard specifies the requirements for metal cable trays and associated fittings designed for use in accordance with the Canadian Electrical Code (CE Code), Part I, and the National Electrical Code (NEC).