When required branch-circuit protection ratings for motors do not match standard ratings, what is the next permitted rating?

In electrical systems, the branch-circuit protection for motors must be carefully matched to ensure safety and efficiency. When standard protection ratings do not align with the required ratings for a specific motor, the next permitted rating is to select a higher rating. This approach ensures that the circuit can handle the starting currents that motors typically draw, which can be significantly greater than their normal running current.

By using a higher rating, you accommodate for these inrush currents while still protecting the circuit from overload conditions. However, it's crucial to ensure that this higher rating doesn’t exceed the motor’s capacity or cause damage to the motor's components. Therefore, selecting a higher rating facilitates proper function while providing necessary protection in line with the specific requirements of the installation—permitting safe operation without compromising performance.