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Q: What is the breaker size for a 10 KVA electric heater?

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An exact breaker size can not be given because the voltage, and hence the calculation for current, is not given. A transformer shall be protected by an over current device that is not rated at more that 150% of the primary current.

Cable is not rated in kva.

At what pressure air is blast in air blast circuit breaker during fault intruption?

There is really no way to give you a straight answer on this one. For instance, I live in a doublewide with an electric furnace. The burners on it draw 53K watts, so in the winter when other people with gas furnaces electric bills go down, ours goes up. It cost's us twice as much to run the heater as it does to run the A/C. Go figure. So the power requirements will vary greatly depending on the size of the house, how many different things (appliances and such) are sucking from the meter. And of course the weather will be another factor.

The transformer has a maximum rated voltage, determined by the size of the magnetic core and the frequency, and, quite separately, a maximum rated current determined by the size of the copper wire in the coils. Multiply the two together to find the VA or kVA rating. The kilowatts are equal to the kVA times the power factor of the load that is connected to the transformer.

Related questions

150 amp

75000va / 480v = 156.25A 156.25A * 125% = 195.31A I would size the breaker at 200A

30 amp

What size breakers are needed for a 30kva transformer 208 volt feed 600 volt out put

An exact breaker size can not be given because the voltage, and hence the calculation for current, is not given. A transformer shall be protected by an over current device that is not rated at more that 150% of the primary current.

Cable is not rated in kva.

The question isn't the number of amps total on your branch circuits, but rather, what your MAIN breaker(s) are rated at. This will determine what size of generator you will need. And be certain that the generator is 3-phase. <<>> The formula you are looking for is Amps = kva x 1000/1.73 x voltage.

A breaker is not sized by individual phase amperage. It will be a three phase or three pole breaker rated at the output of the generator. Use the following formula to find the output amperage of the three phase generator. Amps = kva x 1000/1.73 x voltage.

A 15 KVA - Generator operating at 380 Volts can cater to only 22.79 Amps. It cannot cater to a 60 Amps breaker

Read the label on the side.

At what pressure air is blast in air blast circuit breaker during fault intruption?

35 sq. mm

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