PVIP Pre-Exam Practice Tests | (Updated 72 Questions)

Valid PVIP Exam Q&A PDF - One Year Free Update

NEW QUESTION 20
The following dc portion of a PV schematic (functionally grounded conductor not shown) is submitted to the building official for permit approval. The building official, who also is he AHJ, allow the system to be installed by requiring what NEC-required MINIMUM size equipment grounding conductor at Location A?

• A. #12 aluminum
• B. #6 aluminum
• C. #10 copper
• D. #8 copper

Answer: C

 

NEW QUESTION 21
Which of the following requires a UL listing or its equivalent?

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

Answer: B

 

NEW QUESTION 22
Which of the following is the required MINIMUM width of the working space In front of ac disconnect equipment?

• A. 30 in. from all exposed live parts and terminals
• B. 36 in. from the right and left edges of the inverter
• C. 36 in. from the top of the ungrounded inverter terminals
• D. 30 in. or the width of the ac disconnect, whichever is greater

Answer: D

 

NEW QUESTION 23
Which electrical connection requires the use of a torque device to complete the connection per NEC requirements?

• A. Screw terminals on an ac receptacle outlet
• B. Underground direct-burial twist-on wire connector
• C. Crimp-on log to the battery cable
• D. Soldered splices in a conduit body

Answer: C

 

NEW QUESTION 24
A homeowner is concerned that a 6kWdc PV system might be experiencing a performance issue. The homeowner has noticed what appears to be declining production. The installer analyzes the following data acquisition system (DAS) results for each year since the installation:

Given the data, which is the MOST likely conclusion to draw?

• A. There is a problem with the DAS because the peak sun hours do not correlate with production values and the das should be repaired.
• B. The system has experienced above-average degradation and a module warranty claim should be explored.
• C. There is an intermittent inverter failure that is causing production to be lower than expected and the inverter should be repaired.
• D. A combination of normal module degradation combined with cloudy weather has caused lower output in the past few years.

Answer: D

 

NEW QUESTION 25
Inspection of a new PV installation shows that the dwelling uses a galvanized water pipe for its grounding electrode and that the PV system now shares the connection. Which of the following is an acceptable supplemental electrode method to ensure the integrity of having a grounding electrode?

• A. Connecting the water pipe to the service entrance panel metal structure
• B. Connecting the water pipe to a gas pipe that is known to be solidly grounded
• C. Connecting the service panel to an auxiliary ground used by a lightning protection system
• D. Connection the service panel to a copper-clad steel ground rod near the panel

Answer: A

 

NEW QUESTION 26
Which of the following is an NEC-indicate means to identify PV source and output circuits at accessible points of termination connection, and splices?

• A. Placards
• B. Conduct stickers
• C. Insulation type
• D. Tagging

Answer: D

 

NEW QUESTION 27
When doinginitial inspections on a PV system that was installed using racking that is not compliant with UL.2703, an inspector should pay special attention to which electrical attribute?

• A. The equipment grounding conductor must be irreversibly spliced.
• B. The grounding conductor must be bonded directly to the primary grounding electrode.
• C. Each PV module needs to be bonded to the equipment grounding conductor.
• D. Racking needs to be bonded to a supplemental grounding electrode conductor.

Answer: C

 

NEW QUESTION 28
A bank of batteries with capability of supplying 250A and a maximum voltage of 325V is housed in a concrete structure in a very humid location. There is service access alsie between rows of batteries. What is the REQUIRED safety distance between the rows of batteries.

• A. 4 ftWhether or not the building is equipped with a dehumidifier or the batteries are insulting surfaces
• B. 3-1/2If the building is equipped with a dehumidifier and the batteries are on insulting surfaces
• C. 6 ft.When the floor is insulated and no dehumidifier is installed.
• D. 3 ft. when insulted conducted conductors are used between terminals.

Answer: D

 

NEW QUESTION 29
Which of the following MUST be referenced for determining a site's design wind speed?

• A. The ASHRAE Handbook_fundamentals in effect
• B. The jurisdiction's local building code in effect
• C. The NEC version in effect
• D. The module manufacture's design wind speed

Answer: A

 

NEW QUESTION 30
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

Answer: A

 

NEW QUESTION 31
When performing a system checkout after completing the installation, what is the SAFEST sequence of tasks to detect installation errors before closing any disconnects to the inverter, charge controller, or batteries?

• A. Perform visual inspection, install source circuit fuses, and measure open-circuit voltage.
• B. Install source circuit fuses, verify that all equipment-grounding conductors are secure, and measure ac line voltage.
• C. Perform visual inspection, install source circuit fuses, and measure open-circuit current.
• D. Perform visual inspection, check polarity and measure open-circuit voltage.

Answer: D

 

NEW QUESTION 32
A grounding electrode is required at the location of all ground-mounted and pole-mounted PV arrays. Which typeof grounding electrode is NOT permitted for arrays. Which type of the grounding electrode is NOT permitted for array grounding?

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

Answer: D

 

NEW QUESTION 33
A customer has a 200A service with a 200A rated panel and 200A main breaker located on the street side of the house. There is a 100A breaker located at the opposite end of busbar feeding a 125A subpanel in the backyard. The customer would like to place the inverter the backyard and use the 125 subpanel. Which MAXIMUM inverter(s) output circuit current could be installed?

• A. 30A
• B. 42A
• C. 32A
• D. 40A

Answer: D

 

NEW QUESTION 34
A PV system equipped with rapid shutdown requires a label stating ''RAPID SHUTDOWN SWITCH FOR SOLAR PV SYSTEM''.
Which is the BEST description of where this label is required?

• A. On or within 3 ft. of the ac disconnect
• B. On or within 3 ft. of the ac disconnect
• C. On or within 3 ft. of the ac disconnect
• D. On or within 3 ft. of the ac disconnect

Answer: D

 

NEW QUESTION 35
Which of the following voltages should be included on the dc disconnected label to indicate MAXIMUM system voltage?

• A. Source circuit V
• B. Non-temperature-corrected V
• C. Temperature-corrected V
• D. 600 V

Answer: C

 

NEW QUESTION 36
How should stratification be eliminated in a set of large, stationary, stationary flooded lead-acid batteries?

• A. Enable equalization.
• B. Rotate the battery positions
• C. Discharge to 80 depth of discharge.
• D. Add 50% diluted sulfuric acid.

Answer: A

 

NEW QUESTION 37
The point-of-utility connection of a residential utility-interactive PV system is in the main distribution panel. If the busbars of the main distribution panel are rated at 200A, and if the distribution panel has a 200A main breaker, the rated output current of the inverter cannot exceed.

• A. 32A
• B. 40A
• C. 200A
• D. 24A

Answer: A

 

NEW QUESTION 38
Which insulation color is allowed for a current-carrying roottop dc conductor on a functionally grounded 6kw PV system?

• A. White
• B. Red
• C. Green/yellow
• D. Green

Answer: B

 

NEW QUESTION 39
An 8 AWG bare copper equipment ground conductor (EGC) is wire tied to the module mounting structure of a commercial rooftop solararray. After a few years of operation, some spots on the EGC begin to turn a green color and appear to be corroding more significantly that other places. What would the MOST likely cause of the problem?

• A. Nyton wire ties in contact with the copper wire
• B. Bypass dlode failures inducing current on the EGC
• C. Array racking touching the EGC at multiple points
• D. A break in the EGC, leaving the array ungrounded

Answer: C

 

NEW QUESTION 40
A AWG THWN-2 PV output conductors from two PV arrays are run in the same 3 in, conduit to their respective functionally grounded inverters in the building. The three PV source circuits are each protected by a
15A fuse in the combiner box at the array. The conduit, which is strapped directly to the roof,is exposed to design temperatures of 140' F (60'C) during its 30 ft.
Exposed run. What is the MAXIMUM current carrying capability value of the PV output conductors?

• A. 61A
• B. 42A
• C. 54A
• D. 34A

Answer: D

 

NEW QUESTION 41
On a PV system larger than 100kw, which PV array design will provide the HIGHEST degree of performance monitoring.
Granularity, and ease of troubleshooting performance issues?

• A. Multiple-string inverter system with data acquisition system located at each inverter.
• B. Multiple-string inverter system with monitored dc-to-dc converters located at each module
• C. Central inverter with data acquisition system located at the inverter.
• D. Multiple-string inverter system with data acquisition system located at each dc combiner

Answer: D

 

NEW QUESTION 42
Insulation resistance testing is being performed on the conductors of a 3-year-old PV system. With a constant high test voltage being applied to a dc conductor, the test results in a high resistance reading. Which does this finding indicate?

• A. The conductor insulation is functioning as intended.
• B. Soling of modules has reduced the efficiency of the system.
• C. Typical module degradation has lowered the output of the system's strings.
• D. Wiring insulation has degraded and is resulting in leakage.

Answer: A

 

NEW QUESTION 43
Thermal imaging infrared cameras can be used to help find which of the following system operational issues?

• A. Blind spot fault in a source circuit
• B. Battery state of charge in a multimode system
• C. Loose PV input circuit terminations in a combiner box
• D. Intensity of solar insolation to determine power output

Answer: A

 

NEW QUESTION 44
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