*******See Attachment for the problem*******
Winter = 50kVA * 1.40 = 70kVA Max
Summer = 50kVA * 1.10 = 55kVA Max
Primary full load current = 70kVA / 7.2kV = 9.72A
Secondary full load current = 70kVA / 240V = 291.6A
a.) 4/0 TX for secondary
b.) 4 for primary
Winter = 50kVA * 1.40 = 70kVA Max
Summer = 50kVA * 1.10 = 55kVA Max
Primary full load current = 70kVA / 7.2kV = 9.72A
Secondary full load current = 70kVA / 240V = 291.6A
a.) 4/0 TX for secondary
b.) 4 for primary