NABCEP PVIP Actual Free Exam Questions & Community Discussion

Exam Code/Number: PVIP
Exam Name/Title: PV Installation Professional (PVIP) Board Certification
Certification Provider: NABCEP
Corresponding Certification: NABCEP Board

Exam Questions: 162
Updated On: Jun 03, 2026

Question #33

An 8KWsc roof-mounted array is placed on a school building. The inverter is located within 1 ft, of the array boundary and has an integrated ac-and dc-disconnecting switch. The system is to be connected to a 400A load center, protected by a 400A main breaker. Which of the following MUST be included to meet NEC requirements?

A. A rapid shutdown initiation device operating contractor within 1 ft, of the array to de-energize the dc subarrays

B. A readily accessible dc disconnect with rapid shutdown initiation device permanently labeled

C. An ac-disconnect label with the location of the rooftop dc-disconnect switch.

D. A readily accessible ac-disconnecting switch, who location is identified on the system directory

Discussion 0

Correct Answer: D Vote an answer

Question #34

A PV array's tilt is 30° at a latitude of 40°N. What is the winter energy loss compared to optimal tilt?

A. 5-10%

B. 20-25%

C. 10-15%

D. 15-20%

Discussion 0

Correct Answer: C Vote an answer

Question #35

An installer troubleshooting a ground-mounted array finds It to be performing as expected most of the time, but a ground-fault error is indicated on hot days. The inverter is in a shaded location. Which of the following should the installer check for FIRST when troubleshooting this array?

A. Pinched module wiring

B. High voltage

C. Intermittent ground connections

D. Loose module connections

Discussion 0

Correct Answer: A Vote an answer

Question #36

A PV array with 58 in. X 38 in modules in portrait orientation is to be mounted at a 35 tiit angle on a shingle roof that has a 5:12 pitch. Assuming the support leg is attached to the top of the modules and is perpendicular to its face, what is the length of the support leg for the modules?

A. 40.50 in.

B. 24.24 in.

C. 12.73 in.

D. 18.25 in.

Discussion 0

Correct Answer: C Vote an answer

Question #37

When installing an ungrounded PV system with an open-circuit voltage of 450Vdc and a maximum voltage of
3000Vdc which procedures should be followed to establish an electrically safe condition?

A. Mount inverters on nonconductive supports and temporarily ground one dc circuit conductor.

B. Determine possible sources electrical supply an avoid exposure to energized conductors or parts.

C. Verify that disconnecting device blades are closed and test conductors using an adequately rated detector.

D. Apply lockout/tagout devices and install a listed isolation transformer.

Discussion 0

Correct Answer: B Vote an answer

Question #38

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 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.

D. 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.

Discussion 0

Correct Answer: B Vote an answer

Question #39

A rooftop PV system is proposed for a commercial building with a membrane roof. The structural engineer specifies a maximum allowable dead load of 5 psf. The PV modules weigh 3 psf, and the racking adds 1.5 psf.
What additional load can be added without exceeding the limit?

A. 0 psf

B. 1.0 psf

C. 0.5 psf

D. 1.5 psf

Discussion 0

Correct Answer: C Vote an answer

Question #40

Most electric service providers require interactive PV equipment to comply with which for interconnection to their distribution grid?

A. UL 60947-1

B. UL 1741

C. UL 2703

D. UL 16998

Discussion 0

Correct Answer: A Vote an answer

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