Electrical Load Estimation Calculator
The Electrical Load Estimation Calculator totals connected and demand load for a facility and sizes the main breaker. Example: for a facility with 8 kW lighting, a 15 kW motor, and two 5 kW aircon units, Demand load = 36.75 kW, Demand = 42.06 kVA, Main breaker = 80 A (per PEC 2017 Art. 2.10 / 2.20 | IEC 60364).
How it works
Computed from your inputs per PEC 2017 Art. 2.10 / 2.20 | IEC 60364.
Worked example (Electrical & Power)
Inputs: a facility with 8 kW lighting, a 15 kW motor, and two 5 kW aircon units.
| Result | Value |
|---|---|
| Demand load | 36.75 kW |
| Demand | 42.06 kVA |
| Main breaker | 80 A |
Computed live by WorkHive's calculation engine; standard: PEC 2017 Art. 2.10 / 2.20 | IEC 60364.
How to use this calculator
- Enter the figures for the duty you are sizing: the worked example below uses a facility with 8 kW lighting, a 15 kW motor, and two 5 kW aircon units.
- The calculator returns Demand load, Demand, Main breaker, computed per PEC 2017 Art. 2.10 / 2.20 | IEC 60364.
- Check the worked example to confirm the method matches how you would do it by hand, then run your own numbers in the interactive tool.
FAQ
What is a electrical load demand calculator kVA?
The Electrical Load Estimation Calculator is a free online tool that computes totals connected and demand load for a facility and sizes the main breaker. It shows the formula and a fully worked example so you can check the method, not just the number.
How is it calculated?
The result is computed from your inputs following PEC 2017 Art. 2.10 / 2.20 | IEC 60364. The worked example on this page shows a real computation with real numbers.
Is the calculator free?
Yes. WorkHive's engineering calculators are free to use, no sign-up needed for the tools. WorkHive is a free, offline-first maintenance platform built for Philippine industrial plants.
Run it on your own numbers
Open the interactive Electrical Load Estimation Calculator in WorkHive: free, no sign-up needed for the calculators.