From the nameplate data of the ac unit, identify the nominal supply voltage and LRA value of the compressor. As a thumb rule, the inrush demand requirement for each model can then be estimated as:

SN Version: Surge kW needed = (Nominal Supply Voltage x Compressor LRA) ÷ 3125

PN Version: Surge kW needed = (Nominal Supply Voltage x Compressor LRA) ÷ 1785