If a space heater is used in an area where it is approved for use, it must meet these requirements:
- The heating elements in the space heater cannot exceed 212 degrees Fahrenheit. Heaters with hot elements, even with guards, are not allowed
- The heating elements cannot be exposed
- The approved heater must be connected directly to an outlet without the use of an extension cord.
Reference: NFPA 101 Life Safety Code. National Fire Protection Agency. Paragraph 18/19.7.8. Quincy, MA: 2006.