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NABCEP PVIP Exam Syllabus Topics:

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

1. A PV array's output drops by 8% due to shading from 10 AM to 2 PM. If unshaded output is 12 kW, what is the shaded output?

A) 11.2 kW
B) 11.0 kW
C) 10.0 kW
D) 10.6 kW

2. A site survey indicates a residential roof with a 4:12 pitch facing 20° east of south. The local latitude is 35°N, and the optimal tilt for maximum annual production is equal to latitude. What adjustment should be made to compensate for the roof's orientation and tilt to achieve near-optimal output?

A) Install adjustable racking to match 35° tilt
B) No adjustment needed; output loss is negligible
C) Rotate modules 20° west to face true south
D) Increase array capacity by 5%

3. A 5 kW system has a daily output of 20 kWh at 5 PSH. What is the total derate factor?

A) 0.85
B) 0.90
C) 0.80
D) 0.75

4. A system's annual output decreases by 10% due to shading. The original output was 20,000 kWh. What is the new output?

A) 16,000 kWh
B) 19,000 kWh
C) 18,000 kWh
D) 20,000 kWh

5. A grid-interactive PV system with battery backup is being installed with a ground-mounted PV array located
200 ft, from the inverter and batteries. The dc PV output circuit has overcuit has overcurrent protection rated from 30A. To reduce voltage drop between the array and batteries, the output circuit wire size was determined to be 6 AWG. The fused dc disconnect between the inverted and batteries is rated for 300A. What is the required size of the equipment grounding conductor between the metal battery case and the inverter?

A) 4 AWG
B) 6 AWG
C) 10 AWG
D) 8 AWG

Solutions: