前言:这是C22的第九版。2第48号，非金属护套电缆，CSA集团根据《加拿大电气规范》第二部分发布的一系列标准之一。它取代了之前在2009年、1990年、1984年、1976年、1965年、1957年、1951年和1938年出版的版本。本标准规定了标称电压为300 V及以下系统用非金属护套电缆的要求。范围:1.1本标准适用于标称电压为300 V及以下系统上使用的非金属护套电缆，根据加拿大电气规范第I.1.2部分的规定，本标准中“应”用于表示要求，即用户有义务满足的规定，以符合本标准；“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。

Preface:This is the ninth edition of C22.2 No. 48,Nonmetallic sheathed cable, one of a series of Standards issued by the CSA Group under theCanadian Electrical Code, Part II. It supersedes the previous editions, published in 2009, 1990, 1984, 1976, 1965, 1957, 1951, and 1938.This Standard specifies requirements for nonmetallic sheathed cables intended for use on systems having a nominal voltage of 300 V and less.Scope:1.1This Standard applies to nonmetallic sheathed cables intended for use on systems having a nominal voltage of 300 V and less, in accordance with the rules of theCanadian Electrical Code, Part I.1.2In this Standard, "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.