Quick Answer
The evse distribution panel phase current unbalance from voltage unbalance calculator computes phase current unbalance from the input values you provide.
Calculator
Need Equipment or a Supplier for This Project?
Use your calculation result to continue with equipment selection, supplier discovery, engineering support, or project evaluation.
Find Engineering Solutions →Result Interpretation
EVSE Distribution Panel Phase Current Unbalance from Voltage Unbalance calculator computes Phase current unbalance in % using the defined engineering formula and the input values provided. Phase current unbalance is expressed in %. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- Phase A current = 50
- Phase B current = 48
- Phase C current = 42
Expected Result:
- Phase current unbalance = 17.142857142857
Engineering Interpretation:
Under the given input conditions, the calculated result is: Phase current unbalance = 17.142857142857 %.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.
Formula / Method
phase current unbalance = 100 * (max(phase a current, phase b current, phase c current) - min(phase a current, phase b current, phase c current)) / ((phase a current + phase b current + phase c current) / 3)Phase current unbalance.
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| Ia | Phase A current | INPUT | Phase A current |
| Ib | Phase B current | INPUT | Phase B current |
| Ic | Phase C current | INPUT | Phase C current |
| phase_current_unbalance | Phase current unbalance | OUTPUT | Phase current unbalance |
Calculation Steps
- Enter the phase a current in A.
- Enter the phase b current in A.
- Enter the phase c current in A.
- Step 1: Compute phase current unbalance.
- Read the phase current unbalance (%) from the results.
Frequently Asked Questions
What does this calculator calculate?
The EVSE Distribution Panel Phase Current Unbalance from Voltage Unbalance calculator estimates Phase current unbalance based on the input parameters you provide
Why is phase a current important in this calculation?
phase a current is used directly in the calculation of phase current unbalance. Its effect on the result depends on the complete formula and the values of the other inputs.. When you enter phase a current in A, the calculator uses it in the engineering formula to compute the output
How should I interpret the result phase current unbalance?
The calculator outputs phase current unbalance in %. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Phase A current (A), Phase B current (A), Phase C current (A). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
Related Tools
EV Charging Station Voltage Unbalance Ratio calculator
NEC 625.41(a) EVSE Continuous Load Derating for Circuit Ampacity calculator
Parking Garage EV Charging Circuit Ohmic Voltage Drop calculator
EV Parking Garage Feeder Current Calculator
Managed Charging System Voltage Drop Calculator
EV Charging Cable Ampacity Derating for Ambient Temperature and Conductor Bundle Factor calculator
Browse More Tools
Explore the full index of engineering calculators on this vertical site.