Online Calculators and Tables to Help You Determine Proper Wire Size


These calculator is used to calculate the Full Load Amps (FLA) of a power transformer based on MVA and voltage (kV). Follow the instructions below.

Power Transformer Full Load Amps (FLA) Calculator


Enter the values below to calculate FLA from transformer MVA and voltage ratings.






Full Load Amps (FLA) : -


The following equations are used in the calculators above to derive Full Load Amps of a transformer.

Equations Used in FLA Calculations:
Single-Phase FLA = (MVA * 1000) / Line-to-Neutral kV
Three-Phase FLA = (MVA * 1000) / (Line-to-Line kV * 1.732)

For long conductor runs where voltage drop may be an issue, use the Voltage Drop Calculator to determine voltage drop and the Circuit Distance Calculator to determine maximum circuit length. Visit the Tables page to view reference tables such as Maximum Ampacity for Current-Carrying Conductors.


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