The term 'branch-circuit load rating' refers to what quantity?

• A. The maximum load the branch circuit is rated to carry
• B. The minimum load required by the circuit
• C. The total of all connected loads
• D. The voltage drop across the circuit

Answer: (A)

The branch-circuit load rating is the maximum amount of current the branch circuit is designed to carry safely. This rating comes from the ampacity of the conductors and the rating of the overcurrent protection device protecting that branch. It defines the circuit’s capacity, not the actual current flowing at any moment. You can have a circuit operating below its rating, but you should never rely on it to carry more than that rating. It’s not about a minimum load, and it’s not the total of all connected loads. It’s also not the voltage drop issue, which is about how much voltage is lost along the run.