What size generator should you use for general household use?

Introduction What size generator should you use for general household use? Generally, a 5KW generator for domestic use is sufficient. If you can reduce some electrical appliances, 2KW will be enough. The specific calculation method based on commonly used electrical ap

What size generator should you use for general household use?

Typically, 5KW is enough for a home generator. If you can reduce some electrical appliances, 2KW will be enough.

The specific calculation method based on commonly used electrical appliances is as follows:

1. Power level of common household appliances:

Microwave oven 600-1500 watts

Rice cooker 500----1700 watts

Stove induction 300----1800 watts

Electric wok 800----2000 watts

Electric water heater 800----2000 watts

Refrigerator 70----250 watts

Electric heating 800----2500 watts

Electric grill oven 800----2000 watts

Oven sterilization 600----800 watts

Electric iron 500----2000 watts

Air conditioner 600 ----5000W

Air conditioner 1000W< /p>

Microwave oven 1000W

Electric cooker 1000W

Electric water heater 1000W

Vacuum cleaner 800W

500W hair dryer

500W electric iron

Washing machine 500W

TV 200W

Computer 200W

Kitchen hood 140W

Fan 100W

0.5W flashlight

50-100W lighting

2. Calculate the power of electrical appliances that must be used during a power outage

250W refrigerator

200W TV

200W computer

50-100W lighting

< p>The starting battery box is a compressor type, and the starting current is calculated as 2.5 times, so the generator power of the refrigerator is 250*2, 5=625W< /p>

Thus, the minimum power of the domestic generator is 200+200 +100+625=1125W, which leaves some power available, so a 2KW generator is enough!

3. Calculating the power of commonly used electrical appliances

Some families can add air conditioners, electric water heaters and other equipment to the necessary electrical appliances:

Because air conditioners are understoodHowever, the starting current of the air conditioner is also calculated based on 2.5 times. A 1000 W air conditioner requires a generator power of 2500 W. Coupled with the 1000 W power of the electric water heater, plus the 2000 W power of the essential original electrical appliances.

< p>So, commonly used generators in home appliances are 1125W + 1000W + 2500W = 4625W, which leaves a few 5kW spare generators are enough!

Energy consumption is 8 kWh per hour.

Chengdu, a common unit of electricity in Chinese households, that is, kilowatt hour, the symbol is kWh, the energy consumption of an appliance with a power of 1 000 watts in one hour. Electricity consumption is 1 kilowatt hour.

The kilowatt hour is what we usually call the “degree”, which is the unit of electrical power. The symbol is: kWh. The calculation formula is thenssance multiplied by time. Suppose the power of an energy-consuming device is 2,500 watts, that is, its power consumption per hour is 2.5 kilowatt hours, or 2.5 kilowatt hours of electricity per hour.

The power is 8000W=8KW, so the electricity consumption in one hour is:

8KW*1h=8KW·h, or 8 kilowatt hours of electricity.

So 8,000 W uses 8 kilowatt hours of electricity per hour.

Detailed information:

Power consumption of commonly used electrical appliances:

< p>Power consumption of commonly used electrical appliances (continued):

Electric energy and safe use of electricity

Relationship between electrical power and current: in household circuits , the voltage U= 220V for sure. Because I = P/U, the greater the total power P of the electrical appliances, the greater the current ttotal I in the circuit is high. If the total current in the circuit exceeds the safe value, the fuse will easily blow. Therefore, do not use several high-power electrical appliances at the same time in the domestic circuit.

When using high-power electrical appliances, you must add a fuse to the electrical box. The function of the fuse is that when the current in the circuit exceeds the maximum normal operating current allowed by the circuit. the fuse will automatically blow, thus protecting the circuit.

Electric power (W) is the same as the unit of electrical energy. The international unit is the Joule (J)

The formula for electric power: P=W/t (t). in the formula represents time, and the base unit is Seconds - s, also commonly used hours - h unit for calculation)

The electric power measurement formula: P = UI (U in the formula represents la voltage, the basic unit is volt-V; Capital I represents current, the base unit is ampere-A)

According to Ohm's law: U=IR (R in the formula represents resistance and the base unit is ohm-Ω)

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