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PVIP PDF Questions and Testing Engine With 72 Questions
NEW QUESTION 37
A homeowner is weighing the PV module options for a roof-mounted solar array. Which is a correct option to present to the homeowner?
- A. Building-integrated PV shingles will be flush or nearly flush with other shingles, but the electrical energy produced will be less than polycrystalline or monocrystalline modules.
- B. Microinverters can be installed with either polycrystalline or monocrystalline modules, negating the need for rapid shutdown compliance.
- C. Rapid shutdown requirements within 1 ft of the array boundary.
- D. Polycrystalline modulesare more shade-tolerance than eitheramorphous or monocrystalline modules and allow a larger array to be installed, including in area where shading could be seasonally problematic.
Answer: B
NEW QUESTION 38
An installer is hired to troubleshoot a 10-year-old roottop system with open-circuitvoltage of 300V. The ground-fault detection (GFD) device has tripped. The insulation on the exposed source circuit cables has deterlorated with multiple cracks and has no flexibility. Which concern is the MOST likely safely issue when servicing this array?
- A. Cracked insulation has allowed water intrusion that resulted in oxidation of the copper conductors.
- B. Insulation has become an electrical conductor since it has changed its composition.
- C. Ungrounded conductors are conducing current event the ground-fault device has activated.
- D. Short-circuit current is present at the PV source-circuit terminals of the disconnect device because of electrical leakage.
Answer: B
NEW QUESTION 39
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. Dispatch the technician to the site t investigate the low performance issue in person.
- B. Review power output and weather conditions via the monitoring portal, and review local weather reports.
- C. Call the data acquisition company to report a monitoring system failure.
- D. Report the low performance to theinverter manufacturer and request that a technical be sent to the site for a warranty claim.
Answer: B
NEW QUESTION 40
The AHJ for enforcement of the NEC has which responsibility?
- A. Inspecting factory-installed wire and equipment construction methods
- B. Approval equipment installation methods for efficiency, convenience, and adequacy for good service
- C. Inspecting installations under the exclusive control of the electric utility
- D. Making interpretations of the rules and deciding on approval of equipment and material
Answer: D
NEW QUESTION 41
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. 40A
- B. 32A
- C. 42A
- D. 30A
Answer: A
NEW QUESTION 42
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 connector shall have a non-polarized configuration.
- B. The grounding member shall be interconnectchangeable with receptacles in other electrical systems.
- C. The grounding member shall be last to make and first to break contact with the mating connector
- D. The connector shall be installed so as to guard against inadvertent with live parts by persons.
Answer: D
NEW QUESTION 43
Which of the following voltages should be included on the dc disconnected label to indicate MAXIMUM system voltage?
- A. Non-temperature-corrected V
- B. Temperature-corrected V
- C. Source circuit V
- D. 600 V
Answer: B
NEW QUESTION 44
A ground resistance measurement on a newly installed grounding electrode indicates a resistance of 130. The earth connection may be improved by connecting the existing electrode to a:
- A. Supplement 1/4 in, in thick aluminumplate electrode buried 30 in. down and located 7 ft, away.
- B. Buried water piping system using 40 ft. of 2 in. PVC piping located 10 ft awat.
- C. Supplemental grounding electrode located 5 ft, away.
- D. Supplemental copper plated steel grounding electrode located 8 ft, away.
Answer: D
NEW QUESTION 45
Most electric service providers require interactive PV equipment to comply with which for interconnection to their distribution grid?
- A. UL 16998
- B. UL 1741
- C. UL 2703
- D. UL 60947-1
Answer: D
NEW QUESTION 46
Which insulation color is allowed for a current-carrying roottop dc conductor on a functionally grounded 6kw PV system?
- A. Red
- B. White
- C. Green/yellow
- D. Green
Answer: A
NEW QUESTION 47
Which of the following tests measures axial uplift whenperforming load testing of driven-pile foundation members
- A. Resistance to twisting
- B. Resistance to horizontal movement
- C. Resistance to withdraw (pull-out) force
- D. Resistance to downward (Sinking force
Answer: C
NEW QUESTION 48
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. 0
- B. 400A
- C. 50A
- D. 1
Answer: D
NEW QUESTION 49
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. 54A
- B. 61A
- C. 34A
- D. 42A
Answer: C
NEW QUESTION 50
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 location of thePV utility connection.
- C. Permanent plaque or directory that indicates the locations of both disconnects.
- D. Interface that shuts down the PV system if the utility connection is lost.
Answer: C
NEW QUESTION 51
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. #8 copper
- C. #10 copper
- D. #12 aluminum
Answer: C
NEW QUESTION 52
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. There is an intermittent inverter failure that is causing production to be lower than expected and the inverter should be repaired.
- C. A combination of normal module degradation combined with cloudy weather has caused lower output in the past few years.
- D. The system has experienced above-average degradation and a module warranty claim should be explored.
Answer: C
NEW QUESTION 53
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