Preface This is the third edition of CSA C22.2 No. 230, Tray 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 2009 and 1988.? This Standard specifies requirements for single conductor and multi-conductor constructions, without metal sheath or armour, suitable for use in cable trays and other applications when installed in accordance with the Canadian Electrical Code, Part I.? This edition includes changes to allow additional cables being accepted as tray cables if they meet the requirements outlined in this Standard:? a) wet rated cables from CSA C22.2 No 38, C22.2 No. 49, C22.2 No 75, C22.2 No 96, C22.2 No 96.1, C22.2 No 239, and C22.2 No 68.10, can now be certified as tray cables if they meet the requirements outlined in this Standard;? b) clarification regarding the impact testing, oil resistance testing, and marking of the TC; and? c) clarification regarding which cables are suitable for direct burial.? Scope 1.1 This Standard applies to single conductor cables and multi-conductor cables, without metal sheath or armour, suitable for use in cable trays and other applications when installed in accordance with the Canadian Electrical Code, Part I.? 1.2 The test and marking requirements of this Standard are in addition to the basic requirements for cable construction that appear in other published CSA Group product standards.? 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.