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About This Item

 

Full Description

This standard sets performance requirements for permanently installed electric heaters, electric air heaters, immersion (paint, fluids, etc.) heaters, heating elements and catalytic heaters rated 600 volts or less. This standard does not apply to electric trace heating.
 

Document History

  1. FM Approvals 7320:2022


    Electric Heaters for Use in Class I, II and III, Division 1, and Catalytic Heaters for Use in Class I, Division 1 and 2, Group D, Hazardous (Classified) Locations

    • Most Recent
  2. FM Approvals 7320

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    Electric Heaters for Use in Class I, II and III, Division 1, and Catalytic Heaters for Use in Class I, Division 1 and 2, Group D, Hazardous (Classified) Locations

    • Historical Version