This is not mine, but someone asked me how to use it. The primary side is usually printed "0-110V, 0-110V", but this transformer is different. From its label, it seems BLEGRN/YEWRED is for 110v input, and GRN/RED is for 220v input. If I input 110V through BLEGRN/YEWRED, what should I do with GRN/RED? Keep floating? How about 220v input? Should I connect BLEGRN/YEWRED?