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if you have 200 kva so it's 160 KW then ,you need 400 A MCCB and setting at 0.9 and use cable 4c.185 mm2 if the SMDB is nearby and all this will be change according to the ambient temperature and the electrical code used in your area

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12y ago
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13y ago

A breaker is not sized by individual phase amperage. It will be a three phase or three pole breaker rated at the output of the generator. Use the following formula to find the output amperage of the three phase generator.

Amps = kva x 1000/1.73 x voltage.

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Q: What is the size breaker per phase 200kva generator?
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