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

1. A PV module has a NOCT of 47°C. At 1000 W/m² and 35°C ambient, what is the cell temperature?

A) 47°C
B) 63°C
C) 59°C
D) 55°C

2. A 15 kW system has a total derate factor of 0.87. After 3 years at 1% degradation/year, what is the output?

A) 13.2 kW
B) 12.6 kW
C) 12.8 kW
D) 13.0 kW

3. A residential PV system uses two 120.240Vac utility-interactive inverters with a sealed lead-acid battery energy backup for protected loads. The MOST important protected load consideration when operating in the backup mode is that:

A) All protected loads are connected in multiwire branch circuits.
B) The peak current from the sealed lead- acid batteries must not exceed peak demand currents.
C) The protected loads must have automatic restart function.
D) The stand-alone system configuration can adequately supply current to all protected load branch circuit.

4. A PV module shows burn marks near the junction box. What is the most likely cause?

A) Loose connection
B) Ground fault
C) Overcurrent condition
D) Lightning strike

5. 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) 264W
B) 288W
C) 276W
D) 300W

Solutions: