A generator should only be used outside on stable ground and away from any windows and vents to prevent deadly fumes from entering the home through an opening.
Do not use a generator in close proximity to an enclosed area, its placement could allow CO to enter and build up in occupied spaces.
Make sure a generator has 3 to 4 feet of clear space on all sides and above it to ensure adequate ventilation.
Do not connect a generator directly to home wiring. Power can flow out of your home into the electric system creating a hazard for utility crews working in the area. Home appliances must be connected to the portable generator via extension cords, unless the home is equipped with an electrician installed transfer switch.
Never fill the generator with fuel while it is running or still hot, and don't store gasoline inside of the home or in attached garage.
Do not use all appliances at once. It may be necessary to turn off some appliances to avoid overload. And make sure any connected appliances are off before starting the generator.