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NABCEP PVIP Exam Syllabus Topics:

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

1. A project is using a PV module with a 25-38dc maximum power voltage range and a single input inverter with an operating windows of 250vdc-450dc. The dwelling the system is to be installed on has a 5:12 roof with a southeastem face that can accommodate 14 modules and southwestern face that can accommodate 10 modules. What is the MAXIMUM number of modules that can be installed for proper inverter maximum power point tracking?

A) 24
B) 18
C) 20
D) 14

2. A PV system installation utilizes micro inverters connected to each module of the array. Each micro inverter has a nominal rated output of 250WV. Single phase. The microinverters are listed so that multiple inverters may be connected in parallel to a single feeder circuit, and each inverter has an cable and connector rated for
30A. What is the MAXIMUM number of inverters that may be wired together on a single 30A feeder circuit?

A) 17
B) 15
C) 28
D) 23

3. 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

4. A PV system's inverter displays a ground-fault error. What is the first troubleshooting step?

A) Check array insulation resistance
B) Replace the inverter
C) Inspect AC wiring
D) Verify DC disconnect operation

5. 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) 48 inches wide, 48 inches deep
B) 30 inches wide, 36 inches deep
C) 36 inches wide, 36 inches deep
D) 36 inches wide, 48 inches deep

Solutions: