序言这是CSA C22的第五版。2个40号接线盒和分线盒。它取代了1989年、1973年、1957年和1936年出版的题为“断路器、接线盒和分线盒”的早期版本。它是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。本版本的变更包括对参考标准和受参考标准更新影响的条款的一般更新。范围1。1本标准适用于以下拟根据CSA C22使用的产品。1、《加拿大电气规范》第一部分:a）金属和非金属接线盒（游泳池类型除外）；以及b）长度不超过宽度三倍且体积超过1640 mL的分线盒。1.2本标准不适用于a）根据CSA C22制造的接线盒和分线盒。2号18.1和CSA C22。2第18.2号；b） 用于危险场所的外壳； c） 根据CSA C22制造的外壳。2第26号；d） 根据CSA C22制造的接线盒。2第89号；e）防风雨、防水、防水和防尘外壳。1.3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。

PrefaceThis is the fifth edition of CSA C22.2 No. 40, Junction and pull boxes. It supersedes the previous editions published in 1989, 1973, 1957, and 1936 under the title Cutout, junction, and pull boxes. It is one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. Changes to this edition include a general update of the reference standards and clauses affected by the reference standard updates.Scope1.1 This Standard applies to the following products intended for use in accordance with CSA C22.1, Canadian Electrical Code, Part I: a) metal and nonmetallic junction boxes (of other than the swimming pool type); and b) pull boxes where the length does not exceed three times the width and the volume exceeds 1640 mL. 1.2 This Standard does not apply to a) junction and pull boxes that are made in accordance with CSA C22.2 No. 18.1 and CSA C22.2 No. 18.2; b) enclosures for use in hazardous locations; c) enclosures that are made in accordance with CSA C22.2 No. 26; d) junction boxes that are made in accordance with CSA C22.2 No. 89; and e) weatherproof, waterproof, watertight, and dust-tight enclosures. 1.3 In 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.