Question 10048 of 1033 · Washington 01 Journey Level Electrician Exam
A PV string has modules with an Isc of 8 amperes. What minimum OCPD rating is required if the circuit needs overcurrent protection, using both 125 percent factors and the next standard size?
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 10048
- A: 15 amperes
Explanation
Maximum current is 8 A x 1.25 = 10 A, and the OCPD must be rated at least 125 percent of that, which gives 12.5 A. The next standard OCPD size above 12.5 A is 15 A.
More questions: Special Equipment, Pools, PV and EV
- 10049Under PV rapid shutdown rules, conductors outside the array boundary must be reduced to no more than what voltage within 30 seconds of initiation?
- 10050For PV rapid shutdown, the array boundary is defined as what distance from the array in all directions?
- 10051Inside the array boundary, one rapid shutdown option limits controlled conductors to not more than what voltage within 30 seconds of initiation?
- 10052For one- and two-family dwellings, where must the PV rapid shutdown initiation device be located?
- 10053A PV system has dc circuits operating at 80 volts or more between any two conductors. What protection is required?
- 10054A PV system disconnecting means may consist of up to how many switches or circuit breakers grouped together?