NABCEP PVIP Value Pack (Frequently Bought Together)

Quality Priority

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NABCEP PVIP Exam Syllabus Topics:

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

1. During a PV system inspection, an installer notices that the rapid shutdown system fails to de-energize the array within 30 seconds of initiation. What is the most likely cause based on NEC 690.12 requirements?

A) The rapid shutdown switch is installed more than 10 feet from the array
B) The system lacks a compatible rapid shutdown device
C) The array conductors exceed the maximum allowable voltage
D) The inverter is not listed for rapid shutdown compliance

2. A homeowner is concerned that a 6kWdc PV system might be experiencing a performance issue. The homeowner has noticed what appears to be declining production. The installer analyzes the following data acquisition system (DAS) results for each year since the installation:

Given the data, which is the MOST likely conclusion to draw?

A) The system has experienced above-average degradation and a module warranty claim should be explored.
B) A combination of normal module degradation combined with cloudy weather has caused lower output in the past few years.
C) There is a problem with the DAS because the peak sun hours do not correlate with production values and the das should be repaired.
D) There is an intermittent inverter failure that is causing production to be lower than expected and the inverter should be repaired.

3. A PV output circuit requires a disconnecting means per NEC 690.13. Where must it be located?

A) At the main service panel
B) Within 10 feet of the array
C) At the point of interconnection
D) Within sight of the inverter

4. 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) Insufficient data to determine
D) Yes, shading will occur all day

5. During commissioning, a PV system's measured Voc is 10% lower than expected. What is the most likely cause?

A) Shading on one module
B) High ambient temperature
C) Open circuit in a string
D) Inverter malfunction

Solutions: