If = √3 * (Ea / Z1 + Z2) : Expression for fault current in line to line fault

Q.  What is the expression for fault current in line to line fault?
- Published on 19 Oct 15

a. If = √3 * (Ea / Z1 + Z2)
b. If = 3 * (Ea / Z1 + Z2)
c. If = √3 * (Ea / Z1 + Z2 + Z0)
d. If = 3 * (Ea / Z1 + Z2 + Z0)

ANSWER: If = √3 * (Ea / Z1 + Z2)

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