Preface This is the eighth edition of CSA C22.2 No. 52, Underground secondary and service-entrance cables, one of a series of Standards issued by CSA Group under the Canadian Electrical Code, Part II. It supersedes the previous editions, published in 2015 under the same title, and in 2009, 1996, 1989, 1970, 1955, and 1941 under the title Underground service-entrance cables. This new edition of the Standard includes: a) changes in the colour coding clause b) changes to testing procedures from CSA C22.2 No 0.3 to CSA C22.2 No 2556 c) updates to the \"jacket cut-through test\" d) changes to improve clarity in Table 12; and e) adding a missing value for 6 AWG cable in Table 15. This Standard specifies requirements for 600-volt-class copper and aluminum conductor underground secondary and service-entrance cables. For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of CAN/CSA-C22.2 No. 0. Scope 1.1 This Standard specifies requirements for copper and aluminum conductor secondary and service- entrance cables intended for use on systems having a nominal voltage of 600 V or less in underground installation a) by direct burial; or b) in duct systems. This Standard also applies to multiple-conductor cable assemblies. The products specified in this Standard are designed to be installed in accordance with the rules of the Canadian Electrical Code, Part I. Note: Portions of the cable covered by this Standard will be exposed to sunlight on terminal poles and during storage. 1.2 This Standard applies to cable with a) a maximum allowable conductor temperature of i) 75 C; or ii) 90 C; and b) cold impact and cold bend ratings of 40 C. 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.