前言:这是CSA C22的第三版。2第203号，办公家具的模块化布线系统，CSA集团根据《加拿大电气规范》第三部分发布的一系列标准之一。它取代了1991年和1986年出版的先前版本。有关《加拿大电气规范》第二部分标准的一般信息，请参见CAN/CSA-C22的前言。2第0号，一般要求——加拿大电气规范，第二部分。本版未引入重大技术变更。它代表了标准参考的更新，以及从英制单位到公制单位的转换。 本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。范围:1.1本标准适用于与拟使用的办公家具相结合的模块化布线系统。1.2根据《加拿大电气规范》第一部分的规定，本标准适用于拟永久连接至一个或多个电源电路的设备，其标称系统接地电压为120 V，每条电路的最大额定值为15或20 a，用于非危险场所。 1.3本标准还适用于配有一条或多条电源线的线连接设备，该电源线拟连接至一条或多条额定接地电压为120 V、最大电流为20 A的分支电路，并由一条或多条专用分支电路供电，每条分支电路均端接在CSA配置5-20R的插座上。1.4本标准规定了仅影响电气安全的要求。1.5本标准规定了通信电路的保护布线要求。1.6在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定； “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 third edition of CSA C22.2 No. 203,Modular wiring systems for office furniture, one of a series of Standards issued by CSA Group underPart IIof theCanadian Electrical Code. It supersedes the previous editions published 1991 and 1986.For general information on Standards of theCanadian Electrical Code, Part II, see the preface of CAN/CSA-C22.2 No. 0,General Requirements — Canadian Electrical Code, Part II.This edition does not introduce significant technical changes. It represents an update of the standards references and conversion from imperial to metric units.This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope:1.1This Standard applies to modular wiring systems combined with the office furniture in which they are intended to be used.1.2This Standard applies to equipment intended to be permanently connected to one or more supply circuits at a nominal system voltage of 120 V to ground, and a rating of 15 or 20 A maximum per circuit, for use in nonhazardous locations, in accordance with the Rules of theCanadian Electrical Code, Part I.1.3This Standard also applies to cord-connected equipment provided with one or more power supply cords intended to be connected to one or more branch circuits rated at 120 V to ground and 20 A maximum and supplied from one or more dedicated branch circuit(s) each being terminated at the receptacle of CSA Configuration 5-20R.1.4This Standard specifies the requirements that affect electrical safety only.1.5This Standard specifies the requirements for protective routing of communication circuits.1.6In 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.