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

1. A PV module has a temperature coefficient of power of -0.4%/°C and a rated power of 300W at STC (25°C).
What is the expected power output if the module temperature rises to 55°C?

A) 276W
B) 264W
C) 288W
D) 300W

2. A maintenance inspection reveals cracked module glass. What is the immediate action?

A) Monitor performance
B) Apply sealant to cracks
C) Replace the module
D) Disconnect the string

3. A system's inverter output is 9 kW at 900 W/m² irradiance. What is the expected output at 1000 W/m²?

A) 9.5 kW
B) 10.0 kW
C) 11.0 kW
D) 10.5 kW

4. A grounding electrode is required at the location of all ground-mounted and pole-mounted PV arrays. Which type of grounding electrode is NOT permitted for arrays. Which type of the grounding electrode is NOT permitted for array grounding?

A) Concrete-encased 4 AWG copper conductor at least 20 ft, in length
B) Metal frame of a building or structure in direct with the earth for 10 ft. or more.
C) Metal underground water pipe in direct contact with the earth for 10 ft. or more.
D) Aluminum structural member in direct contact with the earth for 10ft, or more

5. A module's STC power is 300W, with a temperature coefficient of -0.40%/°C. At 65°C, what is the power loss percentage?

A) 16%
B) 12%
C) 14%
D) 18%

Solutions: