A single receptacle connected to a 30-ampere branch circuit must generally have a rating not less than what?

• A. 125 V
• B. 60 A
• C. 15 A
• D. 30 A

Answer: (D)

The main idea is that a receptacle on a branch circuit must be able to safely carry the current the circuit can supply. For a 30-ampere branch circuit, the receptacle must have a current rating of at least 30 A. A 125 V rating describes voltage, not the current capability. A 15 A receptacle would be undersized for a 30 A circuit and could overheat if the circuit carries near its limit. A higher-rated receptacle (like 60 A) would also meet the requirement, but 30 A is the minimum that satisfies the condition.