Tool
Amperage Calculator Transformer
Estimate primary and secondary currents from transformer rating and voltages.
Transformer Current
I = (kVA x 1000) / (V) for 1-phase, I = (kVA x 1000) / (sqrt(3) x V) for 3-phase kVA
Nameplate apparent power rating V
Input side line voltage V
Output side line voltage Result breakdown also includes secondary current based on the same kVA rating.