Formula used in Motor full load current calculator

Single Phase AC Motor FLA (Amperes) = (P [kW] × 1000) / (V × cos ϕ)

Single Phase AC Motor FLA (Amperes) = (P [HP] × 746) / (V × cos ϕ × η)

Three Phase AC Motor FLA (Amperes) = (P [kW] × 1000) / (V × 1.732 × cos ϕ)

Three Phase AC Motor FLA (Amperes) = (P [HP] × 746) / (V × 1.732 × cos ϕ × η)

Where:

P [HP] , P [kW] = Motor power rating (HP or kW),

V = Motor rated voltage (Volts),

η = Motor efficiency in decimal form,

cos ϕ = Motor power factor,

1000 = Conversion factor to convert kW to W,

746 = Conversion factor to convert HP to W.