As shown in Figure 8.25, a balanced three-phase, positive-sequence source with \(V_{\mathrm{AB}}=480 \angle 0^{\circ}\) volts is applied to an unbalanced \(\Delta\) load. Note that one leg of the \(\Delta\) is open. Determine

(a) the load currents \(I_{\mathrm{AB}}\) and \(I_{\mathrm{BC}}\);

(b) the line currents \(I_{\mathrm{A}}, I_{\mathrm{B}}\), and \(I_{\mathrm{C}}\), which feed the \(\Delta\) load; and

(c) the zero-, positive-, and negative-sequence components of the line currents.

Figure 8.25

+ VAR = 480 / 0 V le C (18+ /10) (2 Isc ww AB D B (18+/10) 2