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

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

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

3. 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) 25.0 kWh
C) 20.5 kWh
D) 27.5 kWh

4. A PV array is installed near a pool. What is the minimum distance required from the water's edge per NEC
690.31?

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

5. A racking system is designed for a wind speed of 120 mph. The site's design wind speed increases to 130 mph. What is the percentage increase in wind pressure?

A) 17%
B) 33%
C) 25%
D) 10%

Solutions: