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Question:

Single Phase or 3 Phase Generator?

Hi. I need to buy a diesel generator to run my house on. We have to run at least 3 ACs at a time. The ACs consume roughly 1500W with a surge power of 4500W.Here's my question. If I get a 12KW rated generator, does that mean that each phase can only handle 4000 KW, therefore not even enough to start an AC? i was given this formula by a sales man KVASQRT3 X V X iCan you shed some light on this problem?Greetings from Iran

Answer:

Is the house wired 3 phase or split phase or single phase? Very few houses are wired for 3 phase power. Iran uses 230/240 VAC 50Hz So from that, you need a single phase 240 VAC 50 Hz generator. A 12 kW generator at 240 volts would supply 50 amps. I'd run that to a breaker panel (if you don't already have one) and then run 10 amp lines with a 10 amp breaker to each AC. That leaves you with quite a few amps to run other appliances. You got off on a 3 phase tangent for some reason you aren't telling, but I don't think that is the way you want to go. hope that helps. .

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