The minimum interrupting rating permitted for a fuse or circuit breaker in a specific installation is the ____ fault current available at the location of the protective device.
A) maximum linear
B) minimum symmetrical
C) maximum symmetrical
D) minimum surface

Question

Quizplus · Accepted Answer

The minimum interrupting rating for a fuse or circuit breaker must match or exceed the maximum symmetrical fault current available at the location of the protective device to ensure it can safely interrupt fault conditions.

The Minimum Interrupting Rating Permitted for a Fuse or Circuit