Which of the following systems provides redundancy in electrical circuits?

Dedicated circuits are designed to serve a specific load or piece of equipment, which means they often include redundancy in their design. This approach ensures that the equipment receives a consistent and reliable power supply, minimizing the risk of power disruptions that could result from sharing circuits with other devices.

The inclusion of redundancy through dedicated circuits is particularly critical in situations where downtime can have significant consequences, such as in medical or industrial settings. By isolating high-demand equipment on separate circuits, dedicated circuits help to balance the electrical load and provide an additional layer of reliability, as the failure of one circuit does not impact the operation of others.

In contrast, grounding systems primarily focus on safety and electrical fault prevention, while branch circuits and general-purpose circuits tend to distribute power to multiple devices, making them less reliable for critical applications where redundancy is necessary.