A 1500-kVA, three-phase, 460-V, Y-connected generator with neutral solidly grounded has R = 2% and subtransient X

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A 1500-kVA, three-phase, 460-V, Y-connected generator with neutral solidly grounded has R = 2% and subtransient X= 14%. It supplies two 750-kVA, three-phase, 208-V Y-connected feeders, one of which gets a three-phase short-circuit fault. The transformer in each feeder has R = 2% and X = 6% on the nameplate. Ignoring the short cable impedance, determine the symmetrical rms fault current with full generator voltage prior to the fault.

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