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

1. A rooftop PV system is proposed for a commercial building with a membrane roof. The structural engineer specifies a maximum allowable dead load of 5 psf. The PV modules weigh 3 psf, and the racking adds 1.5 psf.
What additional load can be added without exceeding the limit?

A) 0 psf
B) 1.5 psf
C) 0.5 psf
D) 1.0 psf

2. According to the 2020 National Electrical Code (NEC), what is the minimum required working clearance in front of a 1000V DC PV inverter installed in a non-dwelling unit?

A) 36 inches wide, 36 inches deep
B) 48 inches wide, 48 inches deep
C) 30 inches wide, 36 inches deep
D) 36 inches wide, 48 inches deep

3. A bifacial array gains 15% additional power from rear-side irradiance. If the front-side output is 10 kW, what is the total output?

A) 12.0 kW
B) 11.0 kW
C) 11.5 kW
D) 12.5 kW

4. A system's performance ratio (PR) is calculated as 0.85. If the array capacity is 10 kW and PSH is 5, what is the daily AC output?

A) 50 kWh
B) 40 kWh
C) 45 kWh
D) 42.5 kWh

5. The AHJ for enforcement of the NEC has which responsibility?

A) Inspecting installations under the exclusive control of the electric utility
B) Inspecting factory-installed wire and equipment construction methods
C) Approval equipment installation methods for efficiency, convenience, and adequacy for good service
D) Making interpretations of the rules and deciding on approval of equipment and material

Solutions: