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NABCEP PVIP Exam Syllabus Topics:

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) 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.

2. A microinverter system uses 30 modules, each rated at 320W, with an inverter efficiency of 96%. The AC output is connected to a 208V three-phase service. What is the total three-phase power output?

A) 10.0 kW
B) 9.2 kW
C) 8.8 kW
D) 9.6 kW

3. Per NEC 690.4, who is qualified to install a PV system?

A) Anyone with basic electrical knowledge
B) A licensed electrician or supervised trainee
C) Only a NABCEP-certified installer
D) A journeyman with PV experience

4. A rooftop PV array uses a ballasted racking system with a total weight of 4 psf. The roof's maximum allowable load is 20 psf, including a snow load of 15 psf. Is this installation permissible?

A) No, requires structural reinforcement
B) Yes, if snow load is mitigated
C) No, exceeds total load
D) Yes, with no restrictions

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

Solutions: