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Publications CAN/CSA-C22.2 NO. 191-M89 (R2014)

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CAN/CSA-C22.2 NO. 191-M89 (R2014) - Engine Heaters and Battery Warmers

Publication Year:

  • 1989

Total Pages:


Reaffirmed Year:

  • 2014


  • CSA
General instructions #2 and 3 and update #4 to this standard are available.

To download any updates and/or register for email notification of future updates click here


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.

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.

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QST REG No R1006017360