Question 10066 of 749 · Maryland Journeyperson Electrician Exam
An EVSE is rated 40 amperes continuous. What is the minimum OCPD rating for its branch circuit?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 10066
- B: 50 amperes
Explanation
The branch-circuit OCPD must be at least 125 percent of the maximum load: 40 A x 1.25 = 50 A. 50 A is a standard OCPD size.
More questions: Special Equipment, Pools, PV and EV
- 10067How must each outlet installed for EVSE be supplied?
- 10068Indoor EV charging equipment is listed as requiring ventilation. What does the NEC require?
- 10069In NEC 2020 and 2023, EVSE rated more than 60 amperes or more than 150 volts to ground requires a disconnecting means with which characteristics?
- 10076The OCPD for a fire pump motor must be sized to carry what current indefinitely?
- 10077In NEC 2020 and 2023, fire pump supply conductors inside a building may be protected by encasement in at least how much concrete?
- 10083A transformer arc welder has a rated primary current of 50 amperes and a 50 percent duty cycle. The I1eff value is not marked. Using a duty cycle multiplier of 0.71, what is the minimum supply conductor ampacity?