NABCEP PVIP : PV Installation Professional (PVIP) Board Certification

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NABCEP PVIP Exam Syllabus Topics:

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

1. During a site assessment, an installer identifies a 100-foot-tall tree 150 feet south of a proposed PVarray. The site latitude is 40°N. Will this tree cause shading on December 21st between 9 AM and 3 PM solar time?

A) Yes, shading will occur before 10 AM only
B) Yes, shading will occur all day
C) No, shading will not occur
D) Insufficient data to determine

2. A PV system produces 12,000 kWh annually at a site with 1500 kWh/m²/year insolation. The array area is 50 m². What is the system efficiency?

A) 18%
B) 16%
C) 14%
D) 12%

3. A system's inverter efficiency drops from 97% to 94% due to aging. What is the percentage increase in energy loss?

A) 6.0%
B) 2.1%
C) 4.5%
D) 3.2%

4. 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) Report the low performance to the inverter manufacturer and request that a technical be sent to the site for a warranty claim.
D) Dispatch the technician to the site t investigate the low performance issue in person.

5. 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) 1000 Ah
B) 1667 Ah
C) 833 Ah
D) 417 Ah

Solutions: