don't look at the running amperes because that is not the maximum load. starting amperes ang nagde-decide ng size ng genset. starting amperes of electric motors is between 2x (for fans, low loaded motors) to 3x (compressors, aircons) of the running amperes. sa 2.5 hp aircon that's 2.5x760/220 = 8.6A running amps (1.9KVA). 8.6A x 3 = 25.8A. so needed kva rating to effectively run a 2.5 hp aircon is 25.8 x 220 = 5.7 KVA.
to be sure, look at your aircon and see what the rated amps is. multiply by 3 and that is the starting amps. then multiply by 220 and that gives you the required minimum kva rating of the genset.





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