In Figure P1618 the complex powers delivered to each load are: S1 400 j270 VA,

In Figure P16–18 the complex powers delivered to each load are: S1 ¼ 400 þ j270 VA, S2 ¼ 550 þ j150 VA, and S3 ¼ 1000 þ j0 VA. Find the line currents IA, IN, and IB.