1 kW = 1.316 kVA creates 3412 Btu/hr
1 Ton of A/C will handle 12,000 Btu/hr

1 Ton of A/C will handle 3.5 kW or 4.6 kVA

power consumption (kVA) = ( Volts * Sum (operating Amps) ) / 1000

Size of A/C (tons) = power consumption (kVA) / 4.6

Size of A/C (tons) = power consumption (kiloWatts) / 3.5