PRELIMINARY ENGINEERING TOOL
Three-phase current calculator
Convert electrical load ratings with transparent assumptions and a substituted formula.
Inputs
Calculation steps
I = 10000.000 / (718.801 × 0.800)
Formula ID: POWER_THREE_PHASE_KW_V2
System voltage factor: 718.801
Assumptions and references
Preliminary calculation only. Verify inputs, manufacturer data, applicable standards, fault levels, and local requirements before construction or procurement.
UNDERSTAND THE TOOL
What this calculator does
Estimate line current for a balanced sinusoidal three-phase load using line-to-line voltage.
How to use it
- Confirm the entered voltage is line-to-line.
- Enter active power or apparent power.
- Use a realistic operating power factor for kW.
- Review the formula and use phase-by-phase assessment for unbalanced loads.
Fields and meanings
- Power
- The electrical active or apparent power rating.
- Line voltage
- Line-to-line voltage at the calculation point.
- Power factor
- Required when active power is entered.
- Efficiency
- Applicable only to a declared mechanical-output rating.
Review required. This is not a starting-current, fault-current, harmonic or unbalance calculation.
Read the full explanation →