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

1. 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) 45.0V
C) 43.0V
D) 44.0V

2. An installer is working on a 1000V DC PV array. What is the minimum PPE required per NFPA 70E for arc flash protection?

A) Category 2 PPE
B) Category 3 PPE
C) Category 1 PPE
D) Category 4 PPE

3. A PV array's tilt is 15° at a latitude of 35°N. What is the annual energy loss compared to optimal tilt?

A) 3-5%
B) 1-2%
C) 10-12%
D) 6-8%

4. A customer has a 200A service with a 200A rated panel and 200A main breaker located on the street side of the house. There is a 100A breaker located at the opposite end of busbar feeding a 125A subpanel in the backyard. The customer would like to place the inverter the backyard and use the 125 subpanel. Which MAXIMUM inverter(s) output circuit current could be installed?

A) 30A
B) 42A
C) 32A
D) 40A

5. 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) Verify that disconnecting device blades are closed and test conductors using an adequately rated detector.
C) Apply lockout/tagout devices and install a listed isolation transformer.
D) Determine possible sources electrical supply an avoid exposure to energized conductors or parts.

Solutions: