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NABCEP PV Installation Professional (PVIP) Board Certification Sample Questions:
1. Which of the following is an NEC-indicate means to identify PV source and output circuits at accessible points of termination connection, and splices?
A) Tagging
B) Conduct stickers
C) Placards
D) Insulation type
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) 13.0 kW
B) 12.8 kW
C) 12.6 kW
D) 13.2 kW
3. A PV system has a 1000V DC array feeding a transformerless inverter. What is the minimum insulation rating for the DC conductors per NEC 690.35?
A) 1000V
B) 1500V
C) 600V
D) 2000V
4. A grid-tied PV system uses a transformerless inverter with a maximum DC input of 1000V. The array consists of 20 modules, each with a Voc of 45V. What is the NEC 690.7 correction factor for a low temperature of -15° C if the temperature coefficient is -0.30%/°C?
A) 1.15
B) 1.12
C) 1.21
D) 1.18
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) 5.0 kW
C) 4.0 kW
D) 7.5 kW
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: D | Question # 5 Answer: B |





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