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

1. A PV array is located 8 feet from a property line. What is the minimum height above ground for exposed DC conductors per NEC 690.31?

A) 8 feet
B) 15 feet
C) 12 feet
D) 10 feet

2. 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) 14%
B) 18%
C) 12%
D) 16%

3. A 20 kW system has a measured output of 18 kW at STC. What is the total system loss?

A) 10%
B) 5%
C) 15%
D) 20%

4. A system's inverter efficiency drops from 97% to 94% due to aging. What is the percentage increase in energy loss?

A) 2.1%
B) 3.2%
C) 6.0%
D) 4.5%

5. A PV system is designed for a location with a peak sun hours (PSH) value of 4.5. The daily load is 18 kWh, and the system efficiency is 80%. What is the minimum array size required in kW?

A) 6.0 kW
B) 7.5 kW
C) 4.0 kW
D) 5.0 kW

Solutions: