前言:这是CSA C68的第一版。8.配电设施用架空铝次级和服务入口电缆和导线。范围:1.1本标准规定了主要用于电力设施操作的架空二次和服务入口电缆和导线的要求。注:非电力公司对符合本标准的电缆和导线的操作，可由具有管辖权的机构提出附加要求。1.2本标准涵盖的电缆和导线用于架空安装，并在75°C和90°C的正常最高导线温度下运行。 为组装多个导体提供了经费。单个600 V绝缘导线适用于现场旋转应用。1.3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”用于表示一种选择或在标准范围内允许的选择；“can”用来表示可能性或能力。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 first edition of CSA C68.8,Overhead aluminum secondary and service-entrance cables and conductors for electrical distribution utilities.Scope:1.1This Standard specifies requirements for overhead secondary and service-entrance cables and conductors intended primarily for operation by electrical utilities.Note:The operation of cables and conductors complying with this Standard by other than an electrical utility can be subject to additional requirements by an authority having jurisdiction.1.2The cables and conductors covered by this Standard are intended for overhead installation and for operation at normal maximum conductor temperatures of 75 °C and 90 °C. Provision is made for assembly of multiple conductors. Single 600 V insulated conductors are intended for field-spun applications.1.3In 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; "may" is used to express an option or that which is permissible within the limits of the standard; and "can" is used to express possibility or capability. 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.