What is the minimum rating for circuits other than individual branch circuits?

The minimum rating for circuits other than individual branch circuits, which often includes feeder and service equipment, is established at 20 amperes. This rating is part of the electrical code requirements that ensure safety and functionality in various applications, allowing for adequate load handling without risk of overheating or failure.

Individual branch circuits typically also have specific ratings, but the category in question encompasses larger circuit designs that can manage higher loads. A rating of 20 amperes is a standard measure, commonly seen in residential and commercial applications, balancing the requirement for adequate capacity while maintaining safety standards. This rating supports a range of devices and equipment, ensuring they operate within safe limits.

When circuits are designed for higher currents, they might meet or exceed this threshold, but 20 amperes serves as the base minimum for many general applications, ensuring that circuits can effectively manage electrical demands without exceeding their capabilities.