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NABCEP PV Installation Professional (PVIP) Board Certification Sample Questions:

1. In the middle of a winter day, the data acquisition system for a ground-mounted PV system with large central inverters sends an email alert that system performance is at 50% based on irradiance and temperature performance calculations. No inverters are completely offline. The closed technician is a 4-hour drive from the site, and there are no cameras on site. Which is the BEST response to this situation?

A) Review power output and weather conditions via the monitoring portal, and review local weather reports.
B) Call the data acquisition company to report a monitoring system failure.
C) Dispatch the technician to the site t investigate the low performance issue in person.
D) Report the low performance to the inverter manufacturer and request that a technical be sent to the site for a warranty claim.

2. A PV system is designed with a 48V battery bank and a 5 kW inverter. The load requires 20 kWh/day, and the system must have 2 days of autonomy with a maximum depth of discharge (DoD) of 50%. What is the minimum battery capacity required in Ah?

A) 417 Ah
B) 833 Ah
C) 1000 Ah
D) 1667 Ah

3. Per NEC 690.11, what is the maximum allowable DC voltage for a PV system requiring arc-fault circuit protection?

A) 600V
B) 80V
C) 1000V
D) 150V

4. Which temperature coefficient is used in the calculation to verify energy production of a PV system?

A)

B)

C)

D)

5. A PV system includes a 600V DC disconnect with a fault current rating of 10 kA. The available fault current from the inverter is 12 kA. What must be done to comply with NEC 110.10?

A) Install a current-limiting fuse upstream
B) Reduce the array size to lower fault current
C) Replace the disconnect with a 15 kA-rated unit
D) No action needed; the rating is sufficient

Solutions: