Hundreds of thousands were left powerless for more than three days. Utility companies in California also had difficulties supplying electricity this summer as high temperatures caused homeowners to the crank up the air conditioners, resulting in rolling blackouts. This approach works well for smaller generators because you only can plug in one or two items. Be sure to use appropriate-sized power cords to carry the electric load. Typically, the thicker the cord, the more electricity it can carry.
Extension cords have several drawbacks.
Never connect generators to your internal wiring. For extra safety, install a transfer switch that cuts power to your home from the utility pole and switches it to your generator. Have an adequate supply of fuel for your generator and keep combustible materials like gasoline cans away from heat sources. Always fill the generator with fuel in a well-ventilated area while the generator is turned off. Never run your generator indoors or in a poorly ventilated area such as a garage.