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

1. According to the NEC, where on a residential PV system MUST the labeling describing the type of rapid shutdown be located?

A) On or no more than 1 m (3. 3 ft) from the service disconnecting meant
B) A close as practicable to the PV array requiring rapid shutdown
C) At point on the residence designated by the AKJ and fire marshal
D) On the rapid shutdown initiation device.

2. When commissioning a PV system, which test is most critical to verify proper operation of the array before connecting to the inverter?

A) Open-circuit voltage test
B) Insulation resistance test
C) Short-circuit current test
D) Ground-fault detection test

3. With all other environmental parameters being the same, which would be the expected reduction in KM performance of a PV system after an irradiance drop from 810w/m2 to 740w/m2?

A) 8.6%
B) 9.5%
C) 10.2%
D) 7.4%

4. A grounding electrode is required at the location of all ground-mounted and pole-mounted PV arrays. Which type of grounding electrode is NOT permitted for arrays. Which type of the grounding electrode is NOT permitted for array grounding?

A) Aluminum structural member in direct contact with the earth for 10ft, or more
B) Concrete-encased 4 AWG copper conductor at least 20 ft, in length
C) Metal frame of a building or structure in direct with the earth for 10 ft. or more.
D) Metal underground water pipe in direct contact with the earth for 10 ft. or more.

5. 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) 0.5 psf
B) 1.5 psf
C) 0 psf
D) 1.0 psf

Solutions: