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

1. A 15 kW array has a PR of 0.88 and 1600 kWh/m²/year insolation. What is the annual output?

A) 21,120 kWh
B) 22,440 kWh
C) 19,800 kWh
D) 24,000 kWh

2. A module's Voc is 40V at STC. At -5°C with a coefficient of -0.33%/°C, what is the Voc?

A) 42.0V
B) 44.0V
C) 45.0V
D) 43.0V

3. A PV connection is being made at the center of a 300 ft. long 200 feeder. See the attack diagram. The feeder originates in the upper third of the 800A main service panel (800A main breaker) with a 200A breaker and terminates in a 200A main-lug-only subpanel. The rated output of the PV system inverter is 100A.

Which are the NIMUMUM actions required to achieve an NEC-compliant installation?

A) Install a 200A breaker at the PV source connection point on the portion on the portion of the feeder toward the subpanel and move the 200A breaker to the top of the main service panel, adjust to the 800A main breaker.
B) Install a 325A breaker at the PV source connection point on the portion of the feeder toward the subpanel. Increase the capacity of the feeder from the main panel board to 325A breaker to the bottom of the main service panel, away from the 800 main breaker.
C) Install a 200A breaker at the PV source connection point on the portion of the feeder toward the subpanel, maintain the capacity of the entire feeder, and move the 200A breaker to the bottom of the main service panel, away from the 800A main breaker.
D) Install a 325A at the PV source connection point on the portion of the feeder toward the subpanel, increase the capacity of this portion of the feeder to 325A, add a 200A main breaker to the subpanel, and move the 200A breaker to bottom of the main service panel, away from the 800A main breaker.

4. A PV system is located at 41 N latitude. The sun angle is 23 on December 21 at solar noon. Assuming that the
65 ft tree is directly south of the PV array and will grow 20 ft. over the life of the PV system, what is the MNIMUM distance the tree to the button of the prevent shading?

A) 98 ft.
B) 153 ft.
C) 201 ft.
D) 167 ft.

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

Solutions: