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The equation for power in a three-phase system is given by the following equation:

P = 1.732 x line voltage x line current x power factor

So, to calculate the line current, we can manipulate this equation, as follows:

line current = power / (1.732 x line voltage x power factor)

As you make no mention of power factor, we shall assume the power factor is 1, and we also need to assume the 230 V you quote is a line voltage, so we can calculate the value of current as follows:

line current = 18 000 / (1.732 x 120 x 1) = 86.6 A

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9y ago
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11y ago

First of all, the time for which a generator runs has absolutely no effect on its power -power is simply the rate at which it produces energy. Secondly, the power provided by the machine depends on the power factor of the load, so unless you know that, you cannot determine how much power is provided. Finally, the correct symbol of kilovolt ampere is 'kV.A'. not 'KVA'.

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Q: How many amps does a 18000 watt generator provide at 120 volt 3 phase service?
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