A circuit breaker used as a switch is permitted to disconnect the grounded conductor where all circuit conductors are disconnected simultaneously, or where the device is arranged so that the grounded conductor cannot be disconnected until all the ungrounded conductors of the circuit have been disconnected. What is the purpose of a circuit breaker used as a switch?
1) To disconnect the grounded conductor
2) To disconnect all circuit conductors simultaneously
3) To disconnect the ungrounded conductors of the circuit
4) To disconnect the device