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

1. A PV system is designed with a 48V battery bank and a 5 kW inverter. The load requires 20 kWh/day, and the system must have 2 days of autonomy with a maximum depth of discharge (DoD) of 50%. What is the minimum battery capacity required in Ah?

A) 1000 Ah
B) 833 Ah
C) 1667 Ah
D) 417 Ah

2. 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) 18
B) 14
C) 20
D) 24

3. A PV system's annual energy production is 15,000 kWh. After maintenance, production increases by 5%.
What is the new annual output?

A) 16,000 kWh
B) 16,250 kWh
C) 15,750 kWh
D) 15,500 kWh

4. 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) 8 AWG
C) 10 AWG
D) 6 AWG

5. A PV system uses 10 AWG USE-2 wire for a 150-foot source circuit run with an Isc of 8A. The terminals are rated at 75°C. What is the ampacity of the conductor after applying NEC temperature and conduit fill adjustments at 35°C?

A) 30A
B) 40A
C) 35A
D) 45A

Solutions: