[Dec-2023 Newly Released] PVIP Exam Questions For You To Pass
NABCEP PVIP Exam: Basic Questions With Answers
NABCEP PV Installation Professional (PVIP) Board Certification is a mark of excellence in the renewable energy industry. PV Installation Professional (PVIP) Board Certification certification recognizes individuals who have the knowledge and skills required to design, install and maintain PV systems. PV Installation Professional (PVIP) Board Certification certification is recognized by industry professionals and serves as a mark of quality workmanship and expertise. PV Installation Professional (PVIP) Board Certification certification exam is rigorous, and candidates must demonstrate their knowledge and skills to pass.
NEW QUESTION # 35
While surveying a potential three-phase project, an installer measures the voltage at the point of utility interconnection. The results are as follows:
* Phase to phase: 240V
* Phase A neutral: 120V
* Phase B neutral: 208V
* Phase C neutral: 120V
Which is a likely cause of these reading?
- A. High-leg transformer configuration
- B. Missing ground in the transformer
- C. Phase-to-phase power imbalances
- D. Supply-side ground fault
Answer: A
NEW QUESTION # 36
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. Sealing locknut
- B. Threaded coupling
- C. Grounding bushing
- D. Insulated bushing
Answer: C
NEW QUESTION # 37
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. Connection the service panel to a copper-clad steel ground rod near the panel
- C. Connecting the water pipe to a gas pipe that is known to be solidly grounded
- D. Connecting the service panel to an auxiliary ground used by a lightning protection system
Answer: A
NEW QUESTION # 38
A connector not listed to be used in a concealed location and being used as a disconnect for PV equipment shall comply with which of the following?
- A. The grounding member shall be interconnectchangeable with receptacles in other electrical systems.
- B. The connector shall have a non-polarized configuration.
- C. The connector shall be installed so as to guard against inadvertent with live parts by persons.
- D. The grounding member shall be last to make and first to break contact with the mating connector
Answer: C
NEW QUESTION # 39
An installer troubleshooting a ground-mounted array finds It to be performing as expected most of the time, but a ground-fault error is indicated on hot days. The inverter is in a shaded location. Which of the following should theinstaller check for FIRST when troubleshooting this array?
- A. Intermittent ground connections
- B. Pinched module wiring
- C. High voltage
- D. Loose module connections
Answer: B
NEW QUESTION # 40
How should stratification be eliminated in a set of large, stationary, stationary flooded lead-acid batteries?
- A. Rotate the battery positions
- B. Enable equalization.
- C. Add 50% diluted sulfuric acid.
- D. Discharge to 80 depth of discharge.
Answer: B
NEW QUESTION # 41
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. A break in the EGC, leaving the array ungrounded
- B. Array racking touching the EGC at multiple points
- C. Bypass dlode failures inducing current on the EGC
- D. Nyton wire ties in contact with the copper wire
Answer: B
NEW QUESTION # 42
According to the NEC, if the PV system disconnect and the building service disconnect are at different locations, there MUST be a/an:
- A. Means of locking out both disconnects when the PV system inverter is being serviced.
- B. Permanent plaque or directory that indicates the locations of both disconnects.
- C. Permanent plaque or directory that indicates the location of thePV utility connection.
- D. Interface that shuts down the PV system if the utility connection is lost.
Answer: B
NEW QUESTION # 43
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. #6 aluminum
- B. #10 copper
- C. #8 copper
- D. #12 aluminum
Answer: B
NEW QUESTION # 44
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. Perform visual inspection, check polarity and measure open-circuit voltage.
- C. Install source circuit fuses, verify that all equipment-grounding conductors are secure, and measure ac line voltage.
- D. Perform visual inspection, install source circuit fuses, and measure open-circuit current.
Answer: B
NEW QUESTION # 45
A residential PV system uses two 120.240Vac utility-interactive inverters with a sealed lead-acid battery energy backup for protected loads. The MOST important protected load consideration when operating in the backup mode is that:
- A. The stand-alone system configuration can adequately supply current to all protected load branch circuit.
- B. The protected loads must have automatic restart function.
- C. The peak current from the sealed lead- acid batteries must not exceed peak demand currents.
- D. All protected loads are connected in multiwire branch circuits.
Answer: D
NEW QUESTION # 46
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. 42A
- B. 40A
- C. 32A
- D. 30A
Answer: B
NEW QUESTION # 47
Thermal imaging infrared cameras can be used to help find which of the following system operational issues?
- A. Battery state of charge in a multimode system
- B. Blind spot fault in a source circuit
- C. Loose PV input circuit terminations in a combiner box
- D. Intensity of solar insolation to determine power output
Answer: B
NEW QUESTION # 48
The NEC requires that PV systems installed on dwellings incorporate which of the following components?
- A. A lockable utility disconnect at the point-of-utility interconnection
- B. Dc lightning surge arrestors
- C. Blocking diodes across each module
- D. A dc ground-fault protect device
Answer: A
NEW QUESTION # 49
Which of the following is an NEC requirement regarding access for large-scale PV electric power production facilities?
- A. Field-applied hazard markings must be installed, and access to the supply station is to be restricted by fencing or other adequate means.
- B. Access to remote isolating equipment for servicing is allowed for individual other than qualified persons when the equipment is enclosed within a secure structure.
- C. All fencing and associated gates must have ac and dc current and voltage exposure labvels and must be electrically isolated from the solar facility.
- D. Arc flash warning labels must be field-applied by the installer at all access points for qualified persons and at the point of the utility interconnection directory.
Answer: A
NEW QUESTION # 50
With all other environmental parameters being the same, which would be the expected reduction in KM performance of a PV system after an irradiance drop from 810w/m2 to 740w/m2?
- A. 10.2%
- B. 9.5%
- C. 8.6%
- D. 7.4%
Answer: C
NEW QUESTION # 51
A ground-mounted PV system operating with an open-critical voltage of 550V is in a public park. Which installation procedure will meet NEC requirements for protecting the public from potential electric shock?
- A. Install PV modules with plastic, insulating the frames, and connect to a grounding electrode at the array.
- B. Install a physical barrier on the back of the PV modules that prevent that prevents the conductors from being touched.
- C. Ground the PV module frames, but not the mounting racks, to local grounding electrodes.
- D. Mount the PV modules on a one-axis (north-south) tracker, with supporting structures listed to UL 2703.
Answer: B
NEW QUESTION # 52
Most electric service providers require interactive PV equipment to comply with which for interconnection to their distribution grid?
- A. UL 1741
- B. UL 16998
- C. UL 60947-1
- D. UL 2703
Answer: C
NEW QUESTION # 53
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. Central inverter with data acquisition system located at the inverter.
- B. Multiple-string inverter system with data acquisition system located at each inverter.
- C. Multiple-string inverter system with data acquisition system located at each dc combiner
- D. Multiple-string inverter system with monitored dc-to-dc converters located at each module
Answer: C
NEW QUESTION # 54
Aerial lifts used to hoist equipment and PV modules to roof levels may be fieldmodifiedfor uses other than those intended by the manufacturer with which approval or certification?
- A. Approval by the local AHJ for meeting safely regulations
- B. Certified via the state material handling safely statutes
- C. Certified in writing by the manufacturer or an NRTL
- D. Tested and approval by the distributor of the equipment
Answer: A
NEW QUESTION # 55
In the middle of a winter day, the data acquisition system for a ground-mounted PV system with large central inverters sends an email alert that system performance is at 50% based on irradiance and temperature performance calculations. No inverters are completely offline. The closed technician is a 4-hour drive from the site, and there are no cameras on site. Which is the BEST response to this situation?
- A. Report the low performance to theinverter manufacturer and request that a technical be sent to the site for a warranty claim.
- B. Dispatch the technician to the site t investigate the low performance issue in person.
- C. Call the data acquisition company to report a monitoring system failure.
- D. Review power output and weather conditions via the monitoring portal, and review local weather reports.
Answer: D
NEW QUESTION # 56
What is an arc-flash boundary?
- A. The approach limit distance from energized electrical equipment within which a person is considered to be exposed to full circuit voltage.
- B. The distance within which qualified personnel can safely perform bare-handed work on exposed energized electrical equipment operating at 50 volts or more.
- C. The approach limit distance within which inadvertent movement exposes personnel to increase ris due to electrical arc-over potential.
- D. The approach limit distance within which a person could receive a second-degree burn in the event that an electrical arc flash were to occur
Answer: C
NEW QUESTION # 57
A commercial 600v carport-mounted PV system is installed with rigid running under the parking lot to an inverter pad located at the edge of the parking lot. At what depth below the parkinglot base MUST condult be buried?
- A. 36 in.
- B. 12 in.
- C. 24 in.
- D. 18 in.
Answer: C
NEW QUESTION # 58
Which of the following requires a UL listing or its equivalent?
- A. System manuals
- B. System labels and markings
- C. Grounding electrode clamp
- D. Lag screws
Answer: C
NEW QUESTION # 59
A project is using a PV module with a 25-38dc maximum power voltage range and a single input inverter with an operating windows of 250vdc-450dc. The dwelling the system is to be installed on has a 5:12 roof with a southeastem face that can accommodate 14 modules and southwestern face that can accommodate 10 modules.
What is the MAXIMUM number of modules that can be installed for proper inverter maximum power point tracking?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 60
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