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A kw, or Killowatt = 8.7 amps. So, 30 x 8.7 = approximately 260 amps.

A wall Air conditioner draws about 12-15 amps. A refrigerator about 10-12 amps, a 100 watt light bulb .87 amps or less than 1 amp.

Houses typically have either a 100 amp main breaker or, 150 and up. In the old days, 60 amps was common.

Your answer is, as many houses as it takes to use 260 amps.

If it's for a generator, as backup, 4-8 houses to keep the required things working.

BUT use a large cable to run the power. 260 amp cable is about 3 ought size.

Good luck.

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