Which of the following correctly represents the sequence of operations of isolator circuit breaker and earthing switch while opening a circuit

Open isolator – close circuit breaker – open earthing switch

Open circuit breaker – open isolator – close earthing switch

Close earthing switch – open circuit breaker – open isolator

Close circuit breaker – close isolator – close earthing switch

Which of the following correctly represents the sequence of operations

1.	Which of the following correctly represents the sequence of operations of isolator circuit breaker and earthing switch while opening a circuit
A.	Open circuit breaker – open isolator – close earthing switch
B.	Open isolator – close circuit breaker – open earthing switch
C.	Close earthing switch – open circuit breaker – open isolator
D.	Close circuit breaker – close isolator – close earthing switch
Answer» B. Open isolator – close circuit breaker – open earthing switch