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I am assuming that you are talking single phase. 45 kva is k = 1000, v = volts, a = amps. 45 kva is 45000 volt / amps. Input 45000 divided by 208 volts = 216 amps. Output 45000 divided by 120 volts = 375 amps. There are other losses in the transformer but as a general rule of thumb this is the calculation that you would use.
What else can I help you with?
If a battery has 100 amp hours at 12 volts dc how many amp hours will it have with a 120 volt ac inverter connected?
The amp hours capacity of a battery remains the same whether it is connected to a 12-volt DC load or a 120-volt AC inverter. So, the battery would still have 100 amp hours regardless of the inverter voltage.
What amp breaker do you need for 1500 watts at 120volts?
To calculate the amperage needed for 1500 watts at 120 volts, use the formula: Amps = Watts / Volts. In this case, it would be 1500 watts / 120 volts = 12.5 amps. Therefore, you would need a 15 amp breaker for this circuit to accommodate the power load safely.
How many watts for a 15 amp fuse?
That depends on the voltage you use. If there are 120 volts, the power equals voltage times amperage. 120 volts times 15 amps = 1800 watts. Cheers ebs
12 amp vacuum that is 120 volts how many watts is that?
To calculate the watts, you can use the formula: Watts = Voltage x Amperage. In this case, it would be 120 volts x 12 amps = 1440 watts. Therefore, the 12-amp vacuum cleaner operating at 120 volts uses 1440 watts of power.
What size breaker is required for a 13.8 kw electric heater 3 phase 208 volts?
For a 13.8 kW electric heater at 208 volts, you would need a 3-phase circuit with a minimum of a 50-amp breaker to handle the load safely. This calculation is done by dividing the power (13,800 watts) by the voltage (208 volts) and then dividing by the square root of 3 (since it's a 3-phase system).
If a battery has 100 amp hours at 12 volts dc how many amp hours will it have with a 120 volt ac inverter connected?
The amp hours capacity of a battery remains the same whether it is connected to a 12-volt DC load or a 120-volt AC inverter. So, the battery would still have 100 amp hours regardless of the inverter voltage.
What amp breaker do you need for 1500 watts at 120volts?
To calculate the amperage needed for 1500 watts at 120 volts, use the formula: Amps = Watts / Volts. In this case, it would be 1500 watts / 120 volts = 12.5 amps. Therefore, you would need a 15 amp breaker for this circuit to accommodate the power load safely.
If the potential difference across a load is 60 volts and the resistance of the load is 10 ohms the current is amperes.?
It's not that simple. The basic formula is Volts / Ohms = Amps. For 30 Volts you'd get 0.5 Amps, for 60 Volts you'd get 1 Amp, for 120 Volts you'd get 2 Amps.
Will 2000 watts work on a 20 amp breaker?
The formula to use is I = W/E, assuming that the single breaker is delivering 120 volts, the amperage to the circuit is 16.6 amps. A continuous load on a 20 amp breaker has to be reduced to 80% according to the electrical code. 20 x .8 = 16. So to answer the question, yes, a 20 amp breaker will support a 2000 watt load at 120 volts.
How many watts for a 15 amp fuse?
That depends on the voltage you use. If there are 120 volts, the power equals voltage times amperage. 120 volts times 15 amps = 1800 watts. Cheers ebs
12 amp vacuum that is 120 volts how many watts is that?
To calculate the watts, you can use the formula: Watts = Voltage x Amperage. In this case, it would be 120 volts x 12 amps = 1440 watts. Therefore, the 12-amp vacuum cleaner operating at 120 volts uses 1440 watts of power.
What size breaker is required for a 13.8 kw electric heater 3 phase 208 volts?
For a 13.8 kW electric heater at 208 volts, you would need a 3-phase circuit with a minimum of a 50-amp breaker to handle the load safely. This calculation is done by dividing the power (13,800 watts) by the voltage (208 volts) and then dividing by the square root of 3 (since it's a 3-phase system).
How many amp equals 1200 watts?
Watts = Amps x Volts x Power Factor Maximum value of PF is 1 for a resistive load. If you have 120 volts and a PF = 1, then amps = 10.
How much power flows through a circuit with 1 amp and 120 volts?
The power flowing through the circuit can be calculated using the formula P = I * V, where P is power, I is current, and V is voltage. In this case, P = 1 amp * 120 volts = 120 watts. Therefore, 120 watts of power flows through the circuit.
How many watts can be put on a 20 amp 208 volt circuit breaker?
20-amp breakers can be found for many different voltage levels. The higher-voltage ones tend to be more expensive. A breaker can be used in a circuit of equal or lower voltage than the rated voltage of the breaker.
Amp meter is showing 208 volts I need 240 volts?
If your amp meter is showing 208 volts but you need 240 volts, you may need to check the connection or source supplying the power. Ensure that the voltage source can deliver 240 volts and that there are no issues with the wiring or circuit. Consider consulting with a qualified electrician to address the discrepancy and ensure safe operation.
What size breaker for 120 volt 2500 watt water heater?
For a 2500 watt water heater operating at 120 volts, you would need a 20 amp breaker. This ensures the breaker can handle the load without tripping.
