Electrical Load Calculator
Convert connected electrical load into estimated maximum demand, kVA and current.
Estimated maximum demand
Enter values
How this calculator works
Demand kW = Connected kW × Demand Factor.
kVA = Demand kW / Power Factor.
Current is then calculated from the selected phase and voltage.
Example
A 100 kW connected load at an 80% demand factor gives an estimated maximum demand of 80 kW before converting to kVA and current.
Frequently asked questions
What is demand factor?
Demand factor is estimated maximum demand divided by total connected load.
Is demand factor always 80%?
No. It depends on the type of installation and how loads operate. Enter an appropriate project value.
Can this size a transformer directly?
Use the Transformer Size Calculator after estimating demand kW and power factor.