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

1. A commercial 600v carport-mounted PV system is installed with rigid running under the parking lot to an inverter pad located at the edge of the parking lot. At what depth below the parking lot base MUST condult be buried?

A) 18 in.
B) 12 in.
C) 36 in.
D) 24 in.

2. A 10 kW PV array uses 300W modules with a Voc of 40V and an Isc of 9A. The inverter has a maximum DC input of 600V and 25A. What is the maximum number of modules that can be connected in a single string?

A) 15
B) 14
C) 12
D) 16

3. A PV system interconnects at a 480V three-phase service. The inverter output current is 20A per phase. What is the minimum size of the equipment grounding conductor (EGC) per NEC 250.122 if the OCPD is 30A?

A) 12 AWG
B) 14 AWG
C) 10 AWG
D) 8 AWG

4. A microinverter system uses 30 modules, each rated at 320W, with an inverter efficiency of 96%. The AC output is connected to a 208V three-phase service. What is the total three-phase power output?

A) 8.8 kW
B) 9.2 kW
C) 10.0 kW
D) 9.6 kW

5. A designer is selecting a charge controller for an off-grid system with a 6 kW PV array and a 48V battery bank. The array Isc is 130A. What is the minimum current rating for the charge controller?

A) 162.5A
B) 175A
C) 130A
D) 150A

Solutions: