In a duplex receptacle where Circuit 22 supplies the upper half and Circuit 24 supplies the lower half, what type of breakers are permitted?

In this scenario, utilizing separate circuits to supply different halves of a duplex receptacle requires special attention to how those circuits are protected. The correct choice indicates that both "individual single-pole circuit breakers with handle ties" and "a two-pole circuit breaker" are permitted for this setup.

Using individual single-pole circuit breakers with handle ties ensures that if one breaker trips or needs to be turned off, both circuits are disconnected simultaneously, which is crucial for safety when working on the receptacle. This prevents the risk of someone inadvertently working on a live circuit—the upper half circuit could be de-energized while the lower half remains live if not properly managed.

A two-pole circuit breaker can also be used, as it provides the necessary dual protection for both halves in one unit. This approach keeps both circuits coordinated under a single breaker, thus enhancing safety and ensuring compliance with electrical codes.

The other options would not meet safety standards required for this configuration, as they do not provide the necessary means to isolate both circuits simultaneously. Thus, selecting either permitted option aligns with best practices for electrical safety in circuitry involving duplex receptacles.