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Choosing the Right Size Home Generator

Jan. 05, 2026

Many people are asking, with so many household electrical devices, what size backup power equipment—home generator—should they buy? The editor from Dingbo Power Generator will discuss with you: what size home generator is suitable?


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The following is a reference for the power of common appliances; the specific power depends on the model:

TV: 25-inch 100W, 34-inch 160W; VCD 30W; fluorescent lamp 40W; incandescent lamp 40W-100W; power amplifier 150W; induction cooker 2000W; electric heater 2000W; rice cooker 900W; electric frying pan 1600W; 1P air conditioner approximately 800W; 2P air conditioner approximately 1500W; computer approximately 300W; water dispenser 300W; refrigerator 150W; electric fan 40W; washing machine 120W; microwave oven 800W; electric iron 800W-2000W; LCD monitor approximately 40W; range hood 180W. The power of the above products may vary greatly due to different manufacturers and materials. The specific wattage can be found on the product label itself. When purchasing a generator, it is best not to exceed the total rated power.

 

For industrial products such as motors, air compressors, and electric hammers, whether purchasing ordinary models or other models, the starting current should be multiplied by 3-5 times.

 

For household appliances such as induction cookers, microwave ovens, refrigerators, and water dispensers, the starting current should be multiplied by 2-3 times.

 

It is recommended to buy a larger generator rather than a smaller one. For example, air conditioners have different power requirements for generators when cooling and heating, and it is best to multiply the starting current by 3 times for both. During the process of purchasing a generator, you must calculate the power of the generator yourself or ask customer service personnel to help you calculate it to avoid buying a generator that is too small, which may result in the generator being unusable or being overloaded and causing damage.

 

The power calculation method for diesel generators is as follows:

Power = Voltage * Current * 1.732 * 0.8.

For example, when the output current of a diesel generator set is 360A, its power calculation formula should be 4003601.732*0.8/1000 = 199.5KW.

 

Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. The company has a registered capital of 218.88 million yuan. The company covers an area of 86,000 square meters and a building area of 55,000 square meters. There are more than 660 employees, including 456 professional technicians and 106 senior technicians. It has 46 sales and service outlets nationwide. The main products are diesel engines, generator sets, and diesel generators, providing users with a one-stop service of design, supply, debugging and maintenance at any time. Dingbo has always insisted on using first-class talents, building first-class enterprises, manufacturing first-class products, creating first-class services, and making every effort to build a first-class domestic enterprise. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to [email protected].

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