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

1. A PV module has a temperature coefficient of power of -0.4%/°C and a rated power of 300W at STC (25°C).
What is the expected power output if the module temperature rises to 55°C?

A) 288W
B) 264W
C) 276W
D) 300W

2. An installer is sizing conductors for a 200-foot PV source circuit with a current of 8A at 400V DC. The design specifies a 1.5% voltage drop using copper wire at 30°C. What is the minimum wire size required?

A) 12 AWG
B) 8 AWG
C) 10 AWG
D) 6 AWG

3. A 15 kW array has a PR of 0.88 and 1600 kWh/m²/year insolation. What is the annual output?

A) 21,120 kWh
B) 22,440 kWh
C) 24,000 kWh
D) 19,800 kWh

4. Per NEC 690.4, who is qualified to install a PV system?

A) Anyone with basic electrical knowledge
B) Only a NABCEP-certified installer
C) A journeyman with PV experience
D) A licensed electrician or supervised trainee

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

Solutions: