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NABCEP PVIP Exam Syllabus Topics:

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

1. A PV system designer is selecting an inverter for a 12 kW array with a maximum power point voltage range of 300-450V DC. Which inverter specification is most critical to verify compatibility?

A) Maximum AC output current
B) DC input voltage operating range
C) Nominal AC output voltage
D) Inverter efficiency rating

2. A PV system is installed on a dwelling with a single-phase 240V service. The inverter output is 7.2 kW. What is the minimum service conductor size per NEC 705.12 if the existing load is 50A?

A) 2 AWG
B) 1/0 AWG
C) 1 AWG
D) 2/0 AWG

3. A PV system was installed in July 2017 under the 2017 NEC. The system has a string inverter located inside a garage on a wall 10 ft, from the outside wall and 1oft, from the ac load center at the point of utility connection. The PV system has a PV array on the roof. Which of the following represents the PV rapid shutdown system requirement for the controlled PV system conductors associated with this PV array?

A) More than 1 ft, from the PV array or more than 3 ft, from the point of entry of the building.
B) More than 10ft, from the PV array or more than 5 ft. in length inside the building
C) More than 1 ft, from the VP array and more than 5 ft. In length the building.
D) Within the array boundary and more than 3.ft from the point of entry of the building.

4. A system's inverter efficiency drops from 97% to 94% due to aging. What is the percentage increase in energy loss?

A) 2.1%
B) 3.2%
C) 6.0%
D) 4.5%

5. A metal condult containing an array circuit with Vmo of 400Vdc is connected to a metal enclosure at the location where the concentric knockouts have been punched by the manufacturer. Which method of attachment should be used?

A) Grounding bushing
B) Insulated bushing
C) Threaded coupling
D) Sealing locknut

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