PVIP Exam Questions Get Updated [2021] with Correct Answers
Practice PVIP Questions With Certification guide Q&A from Training Expert Pass4Leader
NEW QUESTION 18
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 last to make and first to break contact with the mating connector
- B. The connector shall be installed so as to guard against inadvertent with live parts by persons.
- C. The connector shall have a non-polarized configuration.
- D. The grounding member shall be interconnectchangeable with receptacles in other electrical systems.
Answer: B
NEW QUESTION 19
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 downward (Sinking force
- D. Resistance to withdraw (pull-out) force
Answer: D
NEW QUESTION 20
A PV connection is being made at the center of a 300 ft. long 200 feeder. See the attack diagram. The feeder originates in the upper third of the 800A main service panel (800A main breaker) with a 200A breaker and terminates in a 200A main-lug-only subpanel. The rated output of the PV system inverter is 100A.
Which are the NIMUMUM actions required to achieve an NEC-compliant installation?
- A. Install a 200A breaker at the PV source connection point on the portion on the portion of the feeder toward the subpanel and move the 200A breaker to the top of the main service panel, adjust to the 800A main breaker.
- B. Install a 325A at the PV source connection point on the portion of the feeder toward the subpanel, increase the capacity of this portion of the feeder to 325A, add a 200A main breaker to the subpanel, and move the 200A breaker to bottom of the main service panel, away from the 800A main breaker.
- C. Install a 200A breaker at the PV source connection point on the portion of the feeder toward the subpanel, maintain the capacity of the entire feeder, and move the 200A breaker to the bottom of the main service panel, away from the 800A main breaker.
- D. Install a 325A breaker at the PV source connection point on the portion of the feeder toward the subpanel. Increase thecapacityof the feeder from the main panel board to 325A breaker to the bottom of the main service panel, away from the 800 main breaker.
Answer: D
NEW QUESTION 21
Which load path connections need to be analyzed when determining live and dead loads on a PV array system installed directly to a metal seam roof?
- A. Module to rail to metal seam roof, metal seam roof sheathing/rather system.
- B. Module to rail, rail to roof sheathing, roof sheathing to wall, wall to base plate/foundation system
- C. Module to rail to metal seam roof, metal seam roof to top plate system
- D. Rail to metal seam roof, metal seam roof to top plate, top plate to wall system
Answer: A
NEW QUESTION 22
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. Supply-side ground fault
- B. Missing ground in the transformer
- C. Phase-to-phase power imbalances
- D. High-leg transformer configuration
Answer: D
NEW QUESTION 23
A PV technician is installing a 6.5KWac inverter using a 40A backfed breaker. The single line shows a 200A panelboard with a 200A breaker, but the installer finds that the panelbord actually has a 150A main breaker.
Which of the following is the CORRECT installation option?
- A. Install a 30A backfed circuit breaker.
- B. Complete the installation as noted above.
- C. Replace the 200A panel with a 150A panel.
- D. Change the main circuit breaker to a 200A unit.
Answer: B
NEW QUESTION 24
A site has a known magnetic declination of 14 west. What should the corrected azimuth reading of the array be in order to be facing true south?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 25
How should stratification be eliminated in a set of large, stationary, stationary flooded lead-acid batteries?
- A. Discharge to 80 depth of discharge.
- B. Rotate the battery positions
- C. Enable equalization.
- D. Add 50% diluted sulfuric acid.
Answer: C
NEW QUESTION 26
According to the NEC, where on a residential PV system MUST the labeling describing the type of rapid shutdown be located?
- A. At point on the residence designated by the AKJ and fire marshal
- B. A close as practicable to the PV array requiring rapid shutdown
- C. On or no more than 1 m (3. 3 ft) from the service disconnecting meant
- D. On the rapid shutdown initiation device.
Answer: D
NEW QUESTION 27
A grid-connected PV system on a dwelling is producing 30% less power than expected. The conductors from threes strings of modules enter into a 3-pole fused dc disconnect, and each ungrounded conductor is connected to a separate pole. On the inverter side of the switch terminals, the three strings are combined. The dc disconnect switch is opened. The voltages on the array side of theswitchare 440 on string #1, 444V on string
#2, and 0V on string #3. The dc disconnect is then closed and the inverter resumes operating, still producing about 30% less power than expected. A clamp-on ammeter is used to measure the dc current of each string of each string of modules where they enter the rooftop junction box. The operating currents of each string are
3.9A for string #1, 3 85A for string #2, and 4.3 A for string #3. What is the MOST likely with the system?
- A. Positive and negative output conductors of string #3 are faulted together.
- B. A ground fault is causing the current from strings #1 and #2 to flow into string #3.
- C. String #3 has an open connection and is not contributing any voltage.
- D. There is lower module mismatch in string #3 than in string #1 and #2.
Answer: A
NEW QUESTION 28
A PV system installation utilizes micro inverters connected to each module of the array. Each micro inverter has a nominal rated output of 250WV. Single phase. The microinverters are listed so that multiple inverters may be connected in parallel to a single feeder circuit, and each inverter has ancable and connector rated for
30A. What is the MAXIMUM number of inverters that may be wired together on a single 30A feeder circuit?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 29
An 8KWsc roof-mounted array is placed on a school building. The inverter is located within 1 ft, of the array boundary and has an integrated ac-and dc-disconnecting switch. The system is to be connected to a 400A load center, protected by a 400A main breaker. Which of the following MUST be included to meet NEC requirements?
- A. An ac-disconnect label with the location of the rooftop dc-disconnect switch.
- B. A readily accessible dc disconnect with rapid shutdown initiation device permanently labeled
- C. A readily accessible ac-disconnecting switch, who location is identified on the system directory
- D. A rapid shutdown initiationdevice operating contractor within 1 ft, of the array to de-energize the dc subarrays
Answer: C
NEW QUESTION 30
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. Insulation type
- B. Placards
- C. Tagging
- D. Conduct stickers
Answer: C
NEW QUESTION 31
An installer is using 1/2 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-fourth the length of the bolt
- B. A pilot hole one-half the length of the bolt
- C. A 1/8 in, pilot hole through the roof into the rafter
- D. A 5/16 in pilot hole through the roof into the rafter
Answer: D
NEW QUESTION 32
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. Supplemental grounding electrode located 5 ft, away.
- B. Supplemental copper plated steel grounding electrode located 8 ft, away.
- C. Buried water piping system using 40 ft. of 2 in. PVC piping located 10 ft awat.
- D. Supplement 1/4 in, in thick aluminumplate electrode buried 30 in. down and located 7 ft, away.
Answer: B
NEW QUESTION 33
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. 9.5%
- B. 7.4%
- C. 10.2%
- D. 8.6%
Answer: D
NEW QUESTION 34
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. Install source circuit fuses, verify that all equipment-grounding conductors are secure, and measure ac line voltage.
- B. Perform visual inspection, check polarity and measure open-circuit voltage.
- C. Perform visual inspection, install source circuit fuses, and measure open-circuit voltage.
- D. Perform visual inspection, install source circuit fuses, and measure open-circuit current.
Answer: B
NEW QUESTION 35
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. Threaded coupling
- C. Insulated bushing
- D. Sealing locknut
Answer: A
NEW QUESTION 36
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. Connection the service panel to a copper-clad steel ground rod near the panel
- B. Connecting the service panel to an auxiliary ground used by a lightning protection system
- C. Connecting the water pipe to a gas pipe that is known to be solidly grounded
- D. Connecting the water pipe to the service entrance panel metal structure
Answer: D
NEW QUESTION 37
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. 18 in.
- C. 24 in.
- D. 12 in.
Answer: C
NEW QUESTION 38
Which of the following requires a UL listing or its equivalent?
- A. Lag screws
- B. System labels and markings
- C. Grounding electrode clamp
- D. System manuals
Answer: C
NEW QUESTION 39
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