Is it safe to use the Bobcat 250 generator indoors?
No — using a generator indoors can kill you in minutes. Generator exhaust contains carbon monoxide, a poison you cannot see or smell. It must only be used outside and far away from windows, doors, and vents, and should never be used inside a home or garage even if doors and windows are open. (Page 3)
From the official Miller Bobcat 250 Portable Welder Generator manual, page 3
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