For continuous loads, the branch-circuit rating, the conductors, and the overcurrent device shall not be less than ____ percent of the rating of the equipment.
A) 75
B) 100
C) 125
D) 150

Question

Quizplus · Accepted Answer

According to NEC 210.20(A), "Rating or Setting of Overcurrent Devices. Branch-circuit conductors shall be permitted to be protected against overcurrent in accordance with their ampacities specified in 310.15, or as specified in 240.4 and 240.5. Conductors shall be protected at their ampacity as specified in 310.15, unless otherwise permitted or required in 240.4 through 240.6. In no case shall the ampacity of a conductor be less than the rating of the branch circuit overcurrent device." The exception to this rule is for continuous loads, where the branch-circuit rating, the conductors, and the overcurrent device shall not be less than 125% of the rating of the equipment. Therefore, the correct answer is C.

For Continuous Loads, the Branch-Circuit Rating, the Conductors, and the Overcurrent