序言这是CSA C22的第六版。2根123号金属护套电缆。它是加拿大标准协会根据《加拿大电气规范》第二部分发布的一系列标准的一部分。它取代了之前在2008年、1996年、1985年、1964年和1962年出版的标题为铝护套电缆的版本。本版CSA C22。2号123金属护套电缆包括导线屏蔽规范的变更、C22试验方法的变更。2号0.3至C22。2无卤电缆的编号2556和添加标记说明。有关《加拿大电气规范》第二部分标准的一般信息，请参阅CAN/CSA-C22前言。2号，0号。范围1。1本标准适用于单芯和多芯RA90和RC90型电缆，其在干燥和潮湿位置的最高温度额定值均为90摄氏度，并根据CSA C22进行安装。 本标准涵盖的1.1.2电缆适用于标称电压高达5000 V的系统，但2导体、平行、光滑铝护套电缆除外，其仅限于600 V。本标准涵盖的1.3型RA90铝护套或RC90铜护套电缆由无缝、光滑金属护套或接缝或无缝组成，在一个或多个绝缘导体上使用的波纹金属护套。在某些情况下，可选的非金属整体覆盖物覆盖在护套上。1.4在CSA标准中，“应”用于表示要求，即用户有义务满足的条款，以符合标准；“应该”用于表示建议或建议但不需要的建议； “可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）以定义其应用。

PrefaceThis is the sixth edition of CSA C22.2 No. 123, Metal sheathed cables. It is part of a series of Standards issued by the Canadian Standards Association under Part II of the Canadian Electrical Code. It supersedes the previous editions published in 2008, 1996, 1985, 1964, and 1962 under the title Aluminum Sheathed Cables. This Edition of CSA C22.2 No. 123 Metal sheathed cables includes changes in the Conductor shielding specifications, Changes on the test methods from C22.2 No 0.3 to C22.2 No 2556 and addition of marking instructions for Halogen free Cables. For general information on the Standards of the Canadian Electrical Code, Part II, see the preface to CAN/CSA-C22.2 No. 0.Scope1.1 This Standard applies to single-conductor and multi-conductor Type RA90 and RC90 cables having a maximum temperature rating of 90 °C in both dry and wet locations and intended for installation in accordance with CSA C22.1, Canadian Electrical Code, Part I. 1.2 Cables covered in this Standard are intended for use on systems having nominal voltages up to 5000 V, except for 2-conductor, parallel, smooth aluminum sheathed cable, which is limited to 600 V. 1.3 Type RA90 aluminum or RC90 copper sheathed cables covered by this Standard consist of a seamless, smooth metal sheath or seamed or seamless, corrugated metal sheath applied over one or more insulated conductors. In some cases an optional nonmetallic overall covering is applied over the sheath. 1.4 In CSA standards, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.