A three-phase distribution cable gets three-phase fault 150 ft. away from the 4160-V, Y-connected generator with neutral grounded. The subtransient impedance of the generator is 0.1 + j0.4 Ω/ph, and the cable impedance is 0.6 + j0.03 Ω/ph per 1000 ft. Determine the symmetrical rms fault current and the first offset peak, ignoring the motor contribution.