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NABCEP PVIP Exam Syllabus Topics:

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

1. A system's annual output decreases by 10% due to shading. The original output was 20,000 kWh. What is the new output?

A) 19,000 kWh
B) 20,000 kWh
C) 16,000 kWh
D) 18,000 kWh

2. A ground-fault protection device (GFPD) trips during commissioning. What is the most likely cause per NEC
690.5?

A) Open circuit in the array
B) Insulation failure between a conductor and ground
C) Overcurrent in the inverter output
D) Reverse polarity in a source circuit

3. What is an arc-flash boundary?

A) The approach limit distance within which a person could receive a second-degree burn in the event that an electrical arc flash were to occur
B) The approach limit distance within which inadvertent movement exposes personnel to increase ris due to electrical arc-over potential.
C) The distance within which qualified personnel can safely perform bare-handed work on exposed energized electrical equipment operating at 50 volts or more.
D) The approach limit distance from energized electrical equipment within which a person is considered to be exposed to full circuit voltage.

4. With all other environmental parameters being the same, which would be the expected reduction in KM performance of a PV system after an irradiance drop from 810w/m2 to 740w/m2?

A) 10.2%
B) 7.4%
C) 8.6%
D) 9.5%

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

Solutions: