PV Installation Professional (PVIP) Board Certification (PVIP) Free Practice Test

Question 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. Nominal AC output voltage

C. DC input voltage operating range

D. Inverter efficiency rating

Correct Answer: C

Question 2

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

A. Lag screws

B. System manuals

C. Grounding electrode clamp

D. System labels and markings

Correct Answer: C

Question 3

A racking system is designed for a wind speed of 120 mph. The site's design wind speed increases to 130 mph. What is the percentage increase in wind pressure?

A. 10%

B. 33%

C. 17%

D. 25%

Correct Answer: C

Question 4

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 VP array and more than 5 ft. In length the building.

B. More than 1 ft, from the PV array or more than 3 ft, from the point of entry of the building.

C. Within the array boundary and more than 3.ft from the point of entry of the building.

D. More than 10ft, from the PV array or more than 5 ft. in length inside the building

Correct Answer: B

Question 5

Which circuits are on the utility side of a service point?

A. Service entrance conductors

B. Service conductors

C. Service lateral

D. Feeders

Correct Answer: B

Question 6

An installer is using ½ in lag boits to secure roof-monitoring hardware to rafters through a roof deck. Which of the following should the installer predrill?

A. A pilot hole one-half the length of the bolt

B. A pilot hole one-fourth the length of the bolt

C. A 5/16 in pilot hole through the roof into the rafter

D. A 1/8 in, pilot hole through the roof into the rafter

Correct Answer: C

Question 7

Which of the following MUST be referenced for determining a site's design wind speed?

A. The NEC version in effect

B. The module manufacture's design wind speed

C. The jurisdiction's local building code in effect

D. The ASHRAE Handbook_fundamentals in effect

Correct Answer: D

Question 8

A 20 kW system has a measured output of 18 kW at STC. What is the total system loss?

A. 10%

B. 5%

C. 15%

D. 20%

Correct Answer: A

Question 9

A 10 kW system has a total derate factor of 0.85 and operates at 5 PSH. What is the daily output in summer with 10% soiling loss?

A. 42.5 kWh

B. 47.5 kWh

C. 36.0 kWh

D. 38.25 kWh

Correct Answer: D

Question 10

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. 9.2 kW

B. 10.0 kW

C. 9.6 kW

D. 8.8 kW

Correct Answer: A

Question 11

A PV array produces 10 kW at 25°C. At 50°C with a coefficient of -0.45%/°C, what is the output?

A. 8.9 kW

B. 9.1 kW

C. 9.5 kW

D. 9.3 kW

Correct Answer: A

Question 12

A PV system has a nameplate capacity of 10 kW DC and operates with a total system derate factor of 0.85.
What is the expected AC output power under standard test conditions (STC)?

A. 9.0 kW

B. 10.0 kW

C. 8.5 kW

D. 7.5 kW

Correct Answer: C

Question 13

An installer is working on a 1000V DC PV array. What is the minimum PPE required per NFPA 70E for arc flash protection?

A. Category 4 PPE

B. Category 3 PPE

C. Category 1 PPE

D. Category 2 PPE

Correct Answer: D

Question 14

A system commissioning test requires verifying rapid shutdown functionality. What is the maximum time allowed for voltage to drop below 30V per NEC 690.12?

A. 60 seconds

B. 10 seconds

C. 30 seconds

D. 20 seconds

Correct Answer: C

Question 15

A PV array is installed near a pool. What is the minimum distance required from the water's edge per NEC
690.31?

A. 10 feet

B. 20 feet

C. 15 feet

D. 5 feet

Correct Answer: A

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NABCEP PV Installation Professional (PVIP) Board Certification (PVIP) Free Practice Test