A 30A branch circuit is protected by a 30A circuit breaker. What is the minimum size of the overcurrent protection device required for this circuit?

ICC E1 exam practice question · Branch Circuit & Feeder Requirements

A 30A branch circuit is protected by a 30A circuit breaker. What is the minimum size of the overcurrent protection device required for this circuit?

30A
B40A
C50A
D60A

Exam tip

Ensure the overcurrent protection device is rated appropriately for the branch circuit.

Why A is correct

According to 2023 NEC 210.11(A), the overcurrent protection device must be rated not less than the rating of the branch circuit. Therefore, a 30A overcurrent protection device is required for a 30A branch circuit.

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A 30A branch circuit is protected by a 30A circuit breaker. What is the minimum size of the overcurrent protection device required for this circuit?

A 30A branch circuit is protected by a 30A circuit breaker. What is the minimum size of the overcurrent protection device required for this circuit?

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