Preface This is the fourth edition of CSA C83, Communication and power line hardware. It supersedes previous editions published in 1996, 1987, 1980, 1970, 1964, 1954, 1950, and 1942. Changes to this edition include the following: a) General requirements for hardware used in the construction of communication and power lines have been updated. b) Approximately 50 Item Standards have been updated including several incorporating imperial dimensions for those instances where metric products are typically not utilized. c) Fourteen new Item Standards have been included as follows: i) C83.116, Angle pole top bracket; ii) C83.135, Heavy duty pole band; iii) C83.136, Angle crossarm insulator bracket; iv) C83.137, Bearing plate for composite poles; v) C83.138, Corner construction bracket; vi) C83.139, Deadend tee; vii) C83.140, Adjustable thrust fitting; viii) C83.141, Sag adjuster assembler; ix) C83.142, Centre phase assembly; x) C83.143, Single guying tee; xi) C83.144, Steel crossarm; xii) C83.145, Auxiliary eye; xiii) C83.146, Cable rack; xiv) C83.147, Non-metallic cable rack hook; and xv) C83.148, Triple guy assembly. Scope 1.1 This Standard covers the general requirements for hardware used in the construction of communication lines and power lines including distribution and transmission lines. 1.2 Detailed requirements for individual items of hardware as numerically listed in Table 5 are covered in separate Item Standards, e.g., C83.46 for cable rack; C83.49 for strain link; C83.75 for thimble guy rod. Notes: 1) Table 5 provides a numerical listing of the Item Standards and Table 6 provides a listing of Item Standards by subject. 2) Annexes A and B provide information on sampling and inspection of line hardware. Annexes A and B are included to assist those unfamiliar with statistical sampling or in need of ready reference for sampling plans acceptable to industry in general. The presence of the sampling tables in the appendices should not be thought to preclude the use of any other sampling plans that will satisfy the AQL requirements specified in the Standard for inspection purposes. 3) Annex C provides a cross reference of comparable Standards and property classes for metric and imperial fasteners. It is intended to be referred to and accepted by the manufacturer and purchaser until such time as metric fasteners become readily available. 4) Annexes D and E provide information for the corona testing of transmission line hardware fittings. 5) Annex F provides design rationale for the transmission line fittings. 6) Annex G provides recommendations for the everyday load limits for threaded items in tension. 7) Annex H provides information on hardness measurements for process control of steel items. 8) For information on grades of construction and strength requirements for overhead lines, see CSA C22.3 No. 1. 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.