Preface

This is the seventh edition of CSA C22.2 No. 127, Equipment and lead wires. It is one of a series of Standards issued by the Canadian Standards Association under Part II of the Canadian Electrical Code. It supersedes the previous editions, published in 1999, 1995, 1988, 1981, 1966, and 1964.

Scope

1.1
This Standard applies to insulated conductors intended for internal wiring of electrical equipment, for leads of transformers, motors, etc., and for luminous-tube signs and ignition systems, to be installed in accordance with the Canadian Electrical Code, Part I.

1.2
Constructions to which this Standard applies are shown in Tables 1 and 2. The Tables are not a complete summary of the construction details, but all of the items shown therein are requirements or limitations.

1.3
In 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.