![]() ![]() The apparent power is the current flowing in the circuit. The power factor compares real power to apparent power. But you shouldn’t make any assumptions until you look at the specs. Many heaters use 220V, which is why homeowners gravitate toward the figure. The wrong voltage will give you the wrong answer. As you can see, the answer will vary depending on the voltage. If you need the amps, you must multiply the volts by the power factor and constant. You get the power in kilowatts when you multiply the amps by the volts, power factor, and constant. You cannot calculate the amps without determining the voltage. Things To Consider While Calculating AmpsĪre you trying to calculate the amps? You can’t secure an accurate answer without taking these factors into account: 1). They can provide all these variables if you have tried and failed to find them. Talk to the contractor that installed the heater. Do you know the correct voltage? What about the power factor? If you provide wrong information, these calculators will generate wrong answers. But they will only work if you know variables like the voltage and power factor. They are easily accessible on the internet. Many developers have created programs that calculate the wattage and ampacity. ![]() However, you need all the other factors in the equation, including the kilowatts, volts, power factor, and constant.īut if these calculations are too confusing to understand, use a calculator. If you understand the formula above, you can calculate the amps of any heater you encounter. As such, they will choose to convert to watts. Many homeowners are not familiar with kilowatts. Remember that the manufacturer will probably express the heater’s energy consumption in kilowatts. It depends on whether you prefer watts or kilowatts. Again, you don’t have to multiply or divide by 1,000. Read How Many Amps Does A 3kW Immersion Heater Use? How To Calculate How Many Amps Can A 3 Phase Heater Draw? The answers you calculate will change depending on these variables. That figure is only accurate if you have 220V and a power factor of 0.90. You can’t expect this data to apply to your situation.įor instance, if you have a 10kW 3-phase heater, don’t expect the appliance to consume 29 amps. However, you cannot take these figures at face value. The table above shows the energy consumption of different 3-phase heaters in amps. If your machine lacks a data plate, look at the manual or any other document that came with the heater.Īverage 3-Phase Heater Energy Consumption With Resepect TO kW Kilowatts
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