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: Sep 07, 2026

Question #1

A string inverter fails to start in the morning. The DC input voltage is 200V, below the minimum start voltage of 250V. What should be checked first?

A. Inverter firmware

B. String sizing

C. AC breaker position

D. Module temperature

Discussion 0

Correct Answer: B Vote an answer

Question #2

A PV array is installed on a sloped roof with a 6:12 pitch. What is the minimum fastener pullout strength required if the uplift force is 200 lbs per attachment point?

A. 300 lbs

B. 400 lbs

C. 200 lbs

D. 600 lbs

Discussion 0

Correct Answer: B Vote an answer

Question #3

A 10 kW system has a total derate factor of 0.85 and operates at 5 PSH. What is the daily output in summer with 10% soiling loss?

A. 42.5 kWh

B. 47.5 kWh

C. 36.0 kWh

D. 38.25 kWh

Discussion 0

Correct Answer: D Vote an answer

Question #4

Which of the following should a PV installer do during dc insulation resistance testing?

A. Connect the megohmmeters's negative terminal to the dc circuit insulation

B. Wait until is raining and all wiring is damp to conduct the test.

C. Remove surge suppression equipment from the circuit being tested.

D. Close ac and dc disconnects and have the system running for at least 5 minutes before testing.

Discussion 0

Correct Answer: A Vote an answer

Question #5

While surveying a potential three-phase project, an installer measures the voltage at the point of utility interconnection. The results are as follows:
* Phase to phase: 240V
* Phase A neutral: 120V
* Phase B neutral: 208V
* Phase C neutral: 120V
Which is a likely cause of these reading?

A. Missing ground in the transformer

B. Supply-side ground fault

C. Phase-to-phase power imbalances

D. High-leg transformer configuration

Discussion 0

Correct Answer: D Vote an answer

Question #6

A metal condult containing an array circuit with Vmo of 400Vdc is connected to a metal enclosure at the location where the concentric knockouts have been punched by the manufacturer. Which method of attachment should be used?

A. Insulated bushing

B. Sealing locknut

C. Grounding bushing

D. Threaded coupling

Discussion 0

Correct Answer: C Vote an answer

Question #7

According to the NEC, where on a residential PV system MUST the labeling describing the type of rapid shutdown be located?

A. On the rapid shutdown initiation device.

B. On or no more than 1 m (3. 3 ft) from the service disconnecting meant

C. A close as practicable to the PV array requiring rapid shutdown

D. At point on the residence designated by the AKJ and fire marshal

Discussion 0

Correct Answer: A Vote an answer

Question #8

A technician has been called to a scale due to a low-performing array. The technician will perform tests in the
24-source circuit combiner box. After putting on the correct PPE and turning off and performing lock.tagout of the inverted and combiner disconnect. Which is the next step to safely begin electrical testing in the combiner box?

A. Test for voltage on the positive out

B. Test for current on each source circuit coming into the combiner box.

C. Open all fuse holders in the combiner box.

D. Remove any surge suppression devices from the circuits.

Discussion 0

Correct Answer: C Vote an answer

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