Class Description
Class Number Description
4228-01 MOTORS AND GENERATORS-For Hazardous Locations

Electric motors (with or without inherent overheating protection) and generators for installation and use in accordance with the requirements of the Canadian Electrical Code Part I.

This category does not include sealed (hermetic) type motors such as in refrigerator compressors.


CSA Standard C22.2 No 0 General Requirements - Canadian Electrical Code Part II
CSA Standard C22.2 No 25 Enclosures for Use in Class II Groups E, F and G Hazardous Locations
CSA Standard C22.2 No 30 Explosion-Proof Enclosures for Use in Class 1 Hazardous Locations
CSA Standard C22.2 No 77 Motors with Inherent Overheating Protection
CSA Standard C22.2 No 100 Motors and Generators
CSA Standard C22.2 No 145 Motors and Generators for Use in Hazardous Locations Class I Groups C and D, Class II Groups E, F and G
T.I.L. No E-13A Electrical Equipment For Use in Hazardous Locations
T.I.L. No E-18 Explosion Proof Enclosures for Use in Class I Hazardous Locations
T.I.L. No E-19 Thermo-Electric Generators for Use in Class I, Division 2, Group D, Hazardous Locations
T.I.L. No E-22 Motors and Generators For Use in Class I, Division 2 and Class II, Division 2, Hazardous Locations
T.I.L. No E-24 HAZ LOC Equipment Class 1
T.I.L. No E-25 Electrical Equipment for Use in Explosive Gas Atmospheres


  1. Motors marked "Thermally Protected" are provided with thermal protection in accordance with Standard C22.2 No 77 "Motors with Inherent Overheating Protection". The thermal protectors may open the motor winding circuits inside the motor enclosure, or may be connected in the control circuits of the equipment which opens the motor circuit externally.
  2. Motors listed with statement "Component Certification Only" (or equivalent wording) are for use only as component parts of Certified equipment which provides for their proper use (e.g. such motors may have exposed live or moving parts which are required to be enclosed by the equipment in which they are intended to be used).


All marking required by CSA must be permanent, legible, and located where readily accessible for review after assembly of the device, except as permitted otherwise. The contents consist of:

  • submittor's identification;
  • model or type designation or equivalent;
  • rated voltage;
  • frequency in Hertz;
  • rated amperes;
  • number of phases;
  • service factor (if different than unity);
  • rated speed;
  • insulation system code;
  • horsepower rating;
  • frame size;
  • permissible ambient, if greater than 40C;
  • temperature code;
  • applicable hazardous locations designation;
  • date code or equivalent;
  • additional markings as may be required by the applicable Standards for specific models or usages;
  • CSA Monogram.

The CSA Certification mark on a motor applies to the motor only, not to the driven equipment.  Both the motor and the generator of a set, provided with a common base, bear the CSA Mark if the set is Certified.

The marking method consists of a data plate or plates or equally permanent marking applied at the factory.