Three single$-$phase transformers are connected in delta$-$grounded wye serving an unbalanced load. The ratings of three transformers are:

Phase A$-$B: $100$ kVA, $12,470-120$ V$,$ Z $=1\mathrm{.}3+$j$1\mathrm{.}7\%$

Phase B$-$C: $50$ kVA, $12,470-120$ V$,$ Z $=1\mathrm{.}1+$j$1\mathrm{.}4\%$

Phase C$-$A: same as Phase B$-$C transformer

The unbalanced loads are:

Phase a: $40$ kVA, $0\mathrm{.}8$ lagging power factor at V$=117\mathrm{.}5/\_-32\mathrm{.}5$V

Phase b: $85$ kVA, $0\mathrm{.}95$ lagging power factor at V$=115\mathrm{.}7/\_-147\mathrm{.}3$V

Phase c: $50$ kVA, $0\mathrm{.}8$ lagging power factor at V$=117\mathrm{.}0/\_95\mathrm{.}3$V