A balanced 480-volt three-phase feeder carries 75 amperes. Using 1.732, approximately how many volt-amperes does it supply?

Texas Journeyman exam practice question · Feeder Calculations

A balanced 480-volt three-phase feeder carries 75 amperes. Using 1.732, approximately how many volt-amperes does it supply?

A36,000 VA
B49,883 VA
C83,136 VA
62,352 VA

Why D is correct

Three-phase apparent power is 1.732 × 480 × 75 = 62,352 volt-amperes. Keep units consistent and use only the factors stated; no optional method or unstated demand factor is assumed.

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A balanced 480-volt three-phase feeder carries 75 amperes. Using 1.732, approximately how many volt-amperes does it supply?

A balanced 480-volt three-phase feeder carries 75 amperes. Using 1.732, approximately how many volt-amperes does it supply?

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