VA to Amps Calculator
Calculate current (Amps) from VA (Volt-Amperes) for both single-phase and three-phase systems.
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Volt-Amps (VA) to Amps Calculation Formulas
Calculate current from apparent power in electrical systems
Single Phase Calculation
The current I in amps is equal to the apparent power S in volt-amps divided by the voltage V in volts:
I(A) = S(VA) / V(V)
Where:
- I(A) Current in Amperes (A)
- S(VA) Apparent power in Volt-Amps (VA)
- V(V) Voltage in Volts (V)
This formula is commonly used in electrical engineering to determine the current flowing through a circuit when the apparent power and voltage are known.
Three Phase Calculation
Calculation with Line to Line Voltage
I(A) = S(VA) / (√3 × VL-L(V))
Where:
- I(A) Current in Amperes (A)
- S(VA) Apparent power in Volt-Amps (VA)
- VL-L Line to line voltage (V)
Calculation with Line to Neutral Voltage
I(A) = S(VA) / (3 × VL-N(V))
Where:
- I(A) Current in Amperes (A)
- S(VA) Apparent power in Volt-Amps (VA)
- VL-N Line to neutral voltage (V)
Practical Example
Single Phase Example
Given:
- Apparent Power (S) = 2300 VA
- Voltage (V) = 230 V
Calculation:
I(A) = 2300 VA / 230 V = 10.00 ANote: Results are typically rounded to two decimal places for practical applications. Always consider the specific requirements of your application for appropriate precision.
