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You will need a 50 kW generator for a single phase 120/240 volt service.
An 8000 watt generator at regular house current 110v will supply 72 amps.
kW = I x E x pf/1000. Taking pf as .9 you get, 200 x 240 x .9/1000 = 43.2. The standard transformer for a 200 amp service is 50 KVA
At 240 volts, and 7 amp current, you will have a load of 1680 watts (volts x amps = watts). A 2000 watt generator will sufice, however a 3500 watt generator, if within your budget, will power a few other necessities if required.
To answer this question the voltage of the pump must be stated.
You will need a 50 kW generator for a single phase 120/240 volt service.
An 8000 watt generator at regular house current 110v will supply 72 amps.
Yes, you can use up to 25 amps on a 3,000 watt generator.
If the service is single phase 200 amp then you would need a, W = A x V, 200 x 240 = 48000 watt generator. Since there are no 48kW standard generators you would have to use a 50 kW generator. If your home distribution panel is 100 amps then a 25 kW generator will work.
As long as the voltages match a 60 amp service will handle a 700 watt microwave. The microwave will only draw A = W/V, A = 700/120 = 5.8 amps.
Almost certainly if you try to draw too much current, the generator will be designed to shut down.
kW = I x E x pf/1000. Taking pf as .9 you get, 200 x 240 x .9/1000 = 43.2. The standard transformer for a 200 amp service is 50 KVA
At 240 volts, and 7 amp current, you will have a load of 1680 watts (volts x amps = watts). A 2000 watt generator will sufice, however a 3500 watt generator, if within your budget, will power a few other necessities if required.
1200 Watt wiring is more than enough for an 800 Watt amp. The rating of the sub doesn't make any difference to the cables. If you want to use the sub to its rated power you should get a bigger amp. If the amp can only give out 800 Watts and the sub can take 1100 Watts then you can put a bigger amp on. It is still going to be loud as with an 800 Watt amp. I have a 300 watt amp with a 1200 Watt sub and people hear me coming.
The relationship between amps (electrical current, or I), volts (electrical potential, or V) and watts(electrical power, or P) is represented by the equation P=VI. So at 110 volts, a 9000 watt generator can provide a maximum of about 82 amps.
A 7000 watt generator us typically intended for 2 - 15 or 20 amp circuits at 120 volts or 1 - 30 amp circuit at 240 volts. When you say, "power a house," if you mean the whole house the answer is, No. You would need a generator capable of supplying a continuous 24000 watts or more to do that. But a 7000 watt generator is a nice one for powering some lights and your gas furnace blower during a power outage when properly connected. I do not know what the wattage is of an electric furnace to know if it can run one of those.