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NABCEP PVIP Exam Syllabus Topics:

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

1. During a PV system inspection, an installer notices that the rapid shutdown system fails to de-energize the array within 30 seconds of initiation. What is the most likely cause based on NEC 690.12 requirements?

A) The inverter is not listed for rapid shutdown compliance
B) The array conductors exceed the maximum allowable voltage
C) The rapid shutdown switch is installed more than 10 feet from the array
D) The system lacks a compatible rapid shutdown device

2. A microinverter system uses 30 modules, each rated at 320W, with an inverter efficiency of 96%. The AC output is connected to a 208V three-phase service. What is the total three-phase power output?

A) 8.8 kW
B) 9.2 kW
C) 9.6 kW
D) 10.0 kW

3. 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

4. A PV system includes a 15 kW array with a maximum power point voltage of 450V and current of 33.33A.
The inverter efficiency is 97%, and the AC output voltage is 240V. What is the AC output current under STC?

A) 60.6A
B) 64.8A
C) 58.5A
D) 62.5A

5. A rooftop PV array has conductors running through a conduit exposed to sunlight on a roof with an ambient temperature of 40°C. The conduit is 2 inches above the roof surface. What is the NEC temperature adjustment factor for 90°C-rated conductors?

A) 0.91
B) 0.96
C) 1.00
D) 0.87

Solutions: