Two single-phase furnaces let’s say, A and B are supplied at 100 V by means of a Scott-connected transformer combination from a 3-phase 6600 V system. The voltage of furnace A is leading. Calculate on of the line current on the 3-phase side, when the furnace A takes 400 kW at 0.707 pf lagging and B takes 800 kW at unity pf.

• A. 110 A
• B. 99 A
• C. 250 A
• D. 149 A