In an underground electrical system, a looped design is chosen for which of the following reasons?

A looped design in an underground electrical system is primarily chosen for increased redundancy and reliability. This configuration allows for multiple paths for electrical flow, meaning that if one segment of the loop experiences a fault or outage, the electrical supply can still be maintained through an alternate route. This redundancy is crucial in ensuring continuous power delivery, particularly in critical applications or in areas where electrical service interruptions can have significant consequences.

With a looped system, the reliability improves since the grid can dynamically reroute power as needed to bypass faulty sections. This design is advantageous in enhancing the overall robustness of the electrical system, allowing for maintenance or repairs to be performed without extensive outages.

In contrast, while lower installation costs, simplified maintenance, and faster installation times might have their own benefits in different contexts, they do not directly relate to the primary advantages of a looped design in underground electrical systems. Instead, the main focus of the looped configuration remains on ensuring that the electrical infrastructure remains resilient and capable of providing consistent service, thereby underscoring the importance of reliability and redundancy in system design.