What describes a double bus double breaker configuration?

A double bus double breaker configuration is characterized by its ability to allow maintenance or repairs on the system without interrupting the flow of service. This design incorporates multiple buses and breakers, enabling the system to route power through alternate paths. If maintenance is needed on one bus or breaker, the load can be shifted to the additional bus and breakers, ensuring that the electrical supply remains uninterrupted. This is particularly critical in high-reliability applications where continuous operation is essential.

The other options describe alternative configurations but do not capture the full benefit and purpose of a double bus double breaker setup. The focus on redundancy and flexibility in the double bus double breaker allows for enhanced reliability and minimal downtime in power distribution, making it the correct choice for this question.