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Load Calculation Formula:
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Load calculation for inverter generators determines the actual power output based on the generator's rated capacity and the power factor of the connected load. This helps ensure the generator operates within its safe capacity.
The calculator uses the load calculation formula:
Where:
Explanation: The formula accounts for the fact that not all apparent power (kVA) is converted to real power (kW) due to the power factor.
Details: Accurate load calculation prevents generator overload, ensures efficient operation, and extends equipment lifespan. It's crucial for sizing generators correctly for specific applications.
Tips: Enter the generator's rated capacity in kW and the expected power factor (typically 0.8 for most applications unless you know otherwise). All values must be valid (kW > 0, PF between 0-1).
Q1: What is a typical power factor for residential loads?
A: Most residential loads have a power factor between 0.8 and 0.95. When in doubt, use 0.8 for conservative calculations.
Q2: How does this differ for non-inverter generators?
A: The calculation is similar, but inverter generators can typically handle higher power factor loads more efficiently and maintain stable output.
Q3: What happens if I exceed the generator's capacity?
A: The generator may shut down, overheat, or be damaged. Inverter generators typically have protection circuits that will shut down before damage occurs.
Q4: Should I include startup surges in this calculation?
A: No, this calculator provides continuous load capacity. For motor starting loads, you may need additional capacity (typically 2-3 times running load).
Q5: How accurate is this calculation?
A: It provides a good estimate for continuous loads. For precise calculations, consider all connected devices and their individual power factors.