Enough for the tests after 20 or 30 hours'practice

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

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

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

2. A PV system is installed in a location with an average annual ambient temperature of 30°C. If the module's NOCT (Nominal Operating Cell Temperature) is 45°C, what is the expected cell temperature under standard operating conditions (800 W/m² irradiance)?

A) 45°C
B) 55°C
C) 50°C
D) 60°C

3. A homeowner is weighing the PV module options for a roof-mounted solar array. Which is a correct option to present to the homeowner?

A) Polycrystalline modules are more shade-tolerance than either amorphous or monocrystalline modules and allow a larger array to be installed, including in area where shading could be seasonally problematic.
B) Building-integrated PV shingles will be flush or nearly flush with other shingles, but the electrical energy produced will be less than polycrystalline or monocrystalline modules.
C) Microinverters can be installed with either polycrystalline or monocrystalline modules, negating the need for rapid shutdown compliance.
D) Rapid shutdown requirements within 1 ft of the array boundary.

4. 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, 48 inches deep
B) 36 inches wide, 36 inches deep
C) 48 inches wide, 48 inches deep
D) 30 inches wide, 36 inches deep

5. A homeowner is concerned that a 6kWdc PV system might be experiencing a performance issue. The homeowner has noticed what appears to be declining production. The installer analyzes the following data acquisition system (DAS) results for each year since the installation:

Given the data, which is the MOST likely conclusion to draw?

A) There is an intermittent inverter failure that is causing production to be lower than expected and the inverter should be repaired.
B) A combination of normal module degradation combined with cloudy weather has caused lower output in the past few years.
C) The system has experienced above-average degradation and a module warranty claim should be explored.
D) There is a problem with the DAS because the peak sun hours do not correlate with production values and the das should be repaired.

Solutions: