On a 240-volt residential branch circuit or feeder circuit with 10 AWG conductors, a maximum of a __________-ampere overcurrent protection device must be used.
A) 20
B) 25
C) 30
D) Any of the above

Question

Quizplus · Accepted Answer

According to the National Electric Code, a 10 AWG conductor is rated for a maximum of 30 amperes. Therefore, the correct overcurrent protection device rated at 240 volts for a residential branch or feeder circuit with 10 AWG conductors would be a 30-ampere breaker. Choice A (20 amperes) and B (25 amperes) are not sufficient to protect the 10 AWG conductors.

On a 240-Volt Residential Branch Circuit or Feeder Circuit with 10