Given the great diversity of plants, a wide price range of diesel-and gasoline generator on the market, their different purpose – to decide to buy power from its appointment – backup or main, location (room or street), the need for fixed or mobile stations (diesel generator, gasoline generator), the availability of power at startup failure of centralized power. 1. The choice of power plants (diesel generator, gasoline generator). To determine how nominal and maximum power must have your power plant (diesel generator, gasoline generator), it is necessary to determine the total capacity of electric power consumers, which will or may be operated simultaneously. First of all, it is necessary to define devices that you want to connect: active (electric cookers, lighting, heaters, etc.), inductive (drills, saws, pumps, compressors, refrigerators, electric motors, laser printers, etc.) If you have chosen power (Diesel generator, gasoline generator) with a synchronous generator, its power is calculated from the following relations: for the active power is necessary to sum all of simultaneously connected devices, add approximately 15-20 – percent power reserve, and you have the necessary power plant (diesel generator, gasoline generator). Elect an inductive type needs at the time of starting for more power, so the total power need to increase by 2.5-3 times to ensure efficiency power plants (diesel generator, gasoline generator). Practical experience of using plants suggests that the work of two – three light bulbs refrigerator, TV on your summer cottage is enough power to 2 kilowatts. The owner of a country cottage, which is constantly worried about shortages of electricity, you must purchase power (diesel generator, gasoline generator) with a capacity of 10 to 20 kilowatts.