Heater is a potential carbon monoxide and fire hazard, it should not be used indoors without proper ventilation and carbon monoxide/fire alarm. Electrical cord too small. Heater should be equipped with a GFCI protected 3 wire # 12 extension cord.
#723
Bad Practice
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Description:

Heater is a potential carbon monoxide and fire hazard, it should not be used indoors without proper ventilation and carbon monoxide/fire alarm. Electrical cord too small. Heater should be equipped with a GFCI protected 3 wire # 12 extension cord.

Hazard: Carbon monoxide, Electricity
Keywords: carbon monoxide, space heater, residential construction

Credit:

OSHA Training Institute, Southwest Education Center