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

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

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

2. A tap conduct is to be connected to a feeder supplied by both a utility service source and a utility-interactive inverter source. The feeder utility source is a 400A breaker in a service panel, the inverter overcurrent protection device is rated at 100A, and the inverter continuous output current is 72. The tap conductor that is to be installed will be 17 ft. long. It will be located in a raceway and will supply a subpanel with a 50A main breaker.
What is the MINIMUM required ampacity of the tap conductor?

A) 400A
B) 50A
C) 163
D) 72

3. Which of the following requires a UL listing or its equivalent?

A) Grounding electrode clamp
B) Lag screws
C) System manuals
D) System labels and markings

4. A 15 kW system has a total derate factor of 0.90. After 5 years, output drops by 2% annually due to degradation. What is the AC output in year 5?

A) 12.9 kW
B) 11.5 kW
C) 13.5 kW
D) 12.2 kW

5. A PV module is mounted with a 2-inch standoff from a shingle roof. What is the minimum clearance required for fire access per the International Fire Code (IFC)?

A) 6 inches
B) 3 inches
C) 9 inches
D) 1 inch

Solutions: