answersLogoWhite

0


Best Answer

Volts * Amps = Watts

220V * 20 A = 4400 Watts

BUT!!!

You don't want to run a generator at 100% capacity for very long; that should be considered peak conditions only and the generator should be run at 80% or less.

The generator will last a lot longer if you run it at 50% capacity (in other words, a generator with 8800 Watt capacity would be a good place to start)

User Avatar

Wiki User

13y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

11y ago

I am assuming that the voltage for this service is 120/240 volts. For a different service voltage exchange the 240 volts with the required service voltage. The formula you are looking for is Watts = Amps x volts = 100 x 240 = 24000 or 24000/1000 = 24 KVA x pf. The most likely single phase generator would be 25kW as it is a standard size.

This answer is:
User Avatar

User Avatar

Wiki User

9y ago

Generators are rated in kilowatts. The equation used to find kW is kW = I x E x 1.73 x power factor /1000. kW = 100 x 440 x 1.73 x .89/1000 = 67.7 kW.

A 70 kW generator would be recommended for this size load.

This answer is:
User Avatar

User Avatar

Wiki User

10y ago

That power is 22 kW so the minimum generator size would be 22 kVA.

This answer is:
User Avatar

User Avatar

Wiki User

12y ago

That load is 72 kVA so you would need a generator of 80 kW driven by a motor of 120 hp. For continuous use you would need a 100 kW generator and 150 hp motor.

This answer is:
User Avatar

User Avatar

Wiki User

9y ago

Assuming a 240 v single-phase supply:

For 100 amps, 100 x 240 VA or 24 kVA

For 200 amps, 200 x 240 VA or 48 kVA

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What size generator would be required for 440 volts 3 phase 100 amp supply?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Natural Sciences

How many amps does a 18000 watt generator supply at 240 volts?

75 Amps theoretically Need to know if the generator is 3 phase or single phase.


How many amps is 8500 watts generator?

The equation that you are looking for is I = W/E. Amps = Watts/Volts. The generator has the capacity to supply 25 amps. Of course the load is what governs the amount of amperage drawn. Any load greater than 25 amps will load the generator down and probably trip the generator's breaker.


What size generator do you need for a 700 amp farm everyday use?

Answer for UK, Europe and countries running a 50 Hz supply service.A farm that takes a 700-amp supply on 3-phase 415 volts is a big farm drawing 500 kVA so it really needs a 750 kVA generator that would be expected to use 60-70 gallons of diesel per hour. It should be noted that 3 phase 415 volts is a 50 Hertz generated supply.At lower voltages the power drawn would be less, but the answer is independent of the supply frequency.Answer for countries running a 60 Hz supply service.A farm that takes a 700-amp supply on 3-phase 208 volts is a farm drawing 250 kVA that needs a 300-350 kVA generator. It would be expected to use 30-40 gallons of diesel per hour.


What is is the formula for calculating the full load current of 23KVA generator?

to calculate the motor full load current one should know motor power factor, supply voltage and phase of supply. Assuming your motor is with 0.85 pf and 3 phase, 415V source then P = (Sqrt3)*V*I*pf 18500 = 1.732*415*0.85*I hence I = 30.2A


What is the total of a phase to earth voltage on 11000 volts?

An 11,000 volt three-phase supply has a voltage of 6351 from live to neutral, when there is a neutral wire.

Related questions

Is it safe to connect 380 volts 3 phase supply to 220 volts 3 phase supply?

No.


How many amps does a 18000 watt generator supply at 240 volts?

75 Amps theoretically Need to know if the generator is 3 phase or single phase.


How many amps is 8500 watts generator?

The equation that you are looking for is I = W/E. Amps = Watts/Volts. The generator has the capacity to supply 25 amps. Of course the load is what governs the amount of amperage drawn. Any load greater than 25 amps will load the generator down and probably trip the generator's breaker.


What is the difference between three phase load and phase supply?

How much current equipments are drawing from three phases (combined or individual) is called three phase load and how much supply we are getting from source is called three phase supply. Ex. In INDIA single phase supply is 220 volt ac with neutral. So in three phase supply all RYB phases should be 220 volts ac with neutral individually. If we calculate with phase to phase than it shoulb be 415 volts ac.


What size generator do you need for a 700 amp farm everyday use?

Answer for UK, Europe and countries running a 50 Hz supply service.A farm that takes a 700-amp supply on 3-phase 415 volts is a big farm drawing 500 kVA so it really needs a 750 kVA generator that would be expected to use 60-70 gallons of diesel per hour. It should be noted that 3 phase 415 volts is a 50 Hertz generated supply.At lower voltages the power drawn would be less, but the answer is independent of the supply frequency.Answer for countries running a 60 Hz supply service.A farm that takes a 700-amp supply on 3-phase 208 volts is a farm drawing 250 kVA that needs a 300-350 kVA generator. It would be expected to use 30-40 gallons of diesel per hour.


How do you convert 3 phase star configuration 380 volts supply into 220 volts supply?

The process of obtaining 220 volts from 380 volts is quite simple. 380 volts is a three phase four wire system voltage. The 220 volts is obtained by taking the sq. root of 3 which equals 1.73 and dividing it into the phase voltage. 380/1.73 = 220 volts. This holds true with any three phase four wire voltage system. 208/1.73 = 120 volts, 415/1.73 = 230 volts, 480/1.73 = 277 volts and 600/1.73 = 347 volts. This lower voltage is present on any of the three phase legs of the three phase system to the neutral which is grounded on a wye connection.


How do you get a 220 volt single phase from 380 volt 3phase synchrounos generator?

220 volt single phase from 480 volt 3 phase that one wire taken one phase and second wire connected in earth point. we get 220 v The above answer is incorrect, one phase from a three phase 480 volt system will give you 277 volts to ground. You must use a transformer to get the voltage you need.


Can you run single phase 230 from one side of 480 volt 3 phase?

No, you will not obtain 230 volts. From a wye connected three phase 480 volt supply, 277 volts can be obtained from one phase leg and the neutral on the wye connection. 480 volts/1.73 (sq. root of 3) = 277 volts.


Can you change the wiring of a single phase appliance of 2.4 kw that works on 240 to 400 volts 3 phase 60 hz supply?

No, you can not you change the wiring of a single phase appliance of 2.4 kw that works on 240 to 400 volts 3 phase 60 Hz supply. They are two different electrical systems.


Well Pump Installation?

form_title=Well Pump Installation form_header=12353 Are you in need of single or three phase power?*= () Single phase () Three phase () Don't Know Do you know the voltage of you power supply?*= () 155 volts () 208 volts () 230 volts () 460 volts () Don't Know () Other


What is is the formula for calculating the full load current of 23KVA generator?

to calculate the motor full load current one should know motor power factor, supply voltage and phase of supply. Assuming your motor is with 0.85 pf and 3 phase, 415V source then P = (Sqrt3)*V*I*pf 18500 = 1.732*415*0.85*I hence I = 30.2A


How many output amps is a 75 KVA generator single phase?

The formula you are looking for is , A = kva x 1000/Volts.