CSA C22.2 NO. 191:M89 (R2024)

Preface This is the second edition of CSA Standard C22.2 No. 191, now CAN/CSA—C22.2 No. 191. It is one of a Series of Standards issued by the Canadian Standards Association under Part II of the Canadian Electrical Code. It is written in SI (metric) units and supersedes the first edition published in 1981. Incorporated in this edition are the following amended or new Clauses: 3.2, 4.5.3.3, 6.2.2, 6.4.7.1, 6.4.7.2, 6.20.2, 6.21.1, and 6.21.2. For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of CSA Standard C22.2 No. 0, General Requirements--Canadian Electrical Code, Part II. This Standard was prepared by a Subcommittee of the Technical Committee on Consumer and Commercial Products under the jurisdiction of the Standards Steering Committee on the Canadian Electrical Code, Part II, and was formally approved by the Technical Committee. It has been approved as a National Standard of Canada by the Standards Council of Canada. Scope 1.1 This Standard applies to cord-connected and permanently connected engine heaters and battery warmers for use on nominal system voltages of 600 V and less that are designed to be used in nonhazardous locations such as in passenger automobiles, light trucks, and heavy duty on- and off-road vehicles in accordance with the Rules of the Canadian Electrical Code, Part I. 1.2 This Standard applies to standard and heavy duty engine heaters, which include the following types: (a) Internal and external coolant immersion; (b) Internal and external oil immersion; and (c) External surface. The heavy duty classification also includes the oil-circulating immersion type. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.