In a balanced three-phase system, the source has an abc-phase sequence and is connected in delta. There are two loads connected in parallel. Load 1 is connected in wye and has a phase impedance of . Load 2 is connected in delta and has a phase impedance of . The line impedance is . Determine the phase voltages of the source if the current in the a phase of load 1 is IAN1 = 12<30o A rms.