Answer / muhammed

first you calculat the load after that you calculate the current using this equation I= P/(ROOT3*V*POWER FACTOR)
after there is one cable selection table(available in google) using current rating check that cable and select the cable size

which oil is used in transformer?

7 Answers  

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How is the air circuit breaker quenching the arc. If it is by air means, where is it come from?

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why should a transformer be never connected to dc supply

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Why do we use series motor to start our car?

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Define noise?

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how we done power management?

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Please give the formula for converting from 1 tr refrigeration to kw.

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