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NABCEP PVIP Exam Syllabus Topics:

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

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. Module temperature
B. String sizing
C. Inverter firmware
D. AC breaker position

Question 2

A dwelling has a 200A main load center with a 150 main breaker. Which of the following is the MOST powerful 240V inverter that can be installed in the house using the existing main panelboard with a backfed breaker?

A. 21, 600W
B. 7, 689W
C. 17, 280W
D. 9, 600W

Question 3

When performing a system checkout after completing the installation, what is the SAFEST sequence of tasks to detect installation errors before closing any disconnects to the inverter, charge controller, or batteries?

A. Install source circuit fuses, verify that all equipment-grounding conductors are secure, and measure ac line voltage.
B. Perform visual inspection, install source circuit fuses, and measure open-circuit current.
C. Perform visual inspection, check polarity and measure open-circuit voltage.
D. Perform visual inspection, install source circuit fuses, and measure open-circuit voltage.

Question 4

A 5 kW PV system has a derate factor of 0.82. The site receives 5.5 PSH daily. What is the expected daily AC energy output?

A. 22.55 kWh
B. 20.5 kWh
C. 25.0 kWh
D. 27.5 kWh

Question 5

Which of the following tests measures axial uplift when performing load testing of driven-pile foundation members

A. Resistance to downward (Sinking force
B. Resistance to twisting
C. Resistance to horizontal movement
D. Resistance to withdraw (pull-out) force

Solutions: