Answer :
Final answer:
The correct option is 2) In parallel with the shared winding In a buck-boost transformer, the overcurrent protection device should be wired in series with the primary winding to prevent excessive currents from causing hazards.
Explanation:
The overcurrent protection device in a buck-boost transformer should be wired in series with the primary winding. This configuration ensures that any excessive current that could potentially cause damage or pose a safety hazard is interrupted before it can pass through the primary winding. This form of protection is in line with the principles outlined in the discussion of electrical safety that includes the use of circuit breakers and fuses to prevent thermal hazards. The placement of the protection device in series with the primary side of the transformer also corresponds with the design of the three-wire system where a circuit breaker or fuse is placed in series on the live (hot) wire to provide overcurrent protection.
In a buck-boost transformer, the overcurrent protection device should be wired in parallel with the shared winding. This is because the overcurrent protection device is used to protect the winding from excessive current. By wiring it in parallel, it can detect the current passing through the winding and interrupt the circuit when the current exceeds the set limit.
