30A is the maximum standard rating for a time-delay fuse to be used for motor branch-circuit short-circuits and ground-fault protection for a 10-horsepower, 208-volt, single-phase capacitor motor.
The time-delay fuses have evolved for conditions in which perfect short-term overloads are encountered, including beginning a motor. this form of fuse will convey an overload of numerous instances of the regular load for a brief time frame without blowing.
Therefore, 30A is the maximum standard rating for a time-delay fuse to be used for motor branch-circuit short-circuits and ground-fault protection for a 10-horsepower, 208-volt, single-phase capacitor motor.
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