PVIP Certification Exam Dumps Questions in here [Jan-2022]
Updated PVIP Exam Practice Test Questions
NEW QUESTION 35
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. There is lower module mismatch in string #3 than in string #1 and #2.
- D. String #3 has an open connection and is not contributing any voltage.
Answer: A
NEW QUESTION 36
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. 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.
- D. Rapid shutdown requirements within 1 ft of the array boundary.
Answer: B
NEW QUESTION 37
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. All protected loads are connected in multiwire branch circuits.
- B. The protected loads must have automatic restart function.
- C. The stand-alone system configuration can adequately supply current to all protected load branch circuit.
- D. The peak current from the sealed lead- acid batteries must not exceed peak demand currents.
Answer: A
NEW QUESTION 38
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. Each PV module needs to be bonded to the equipment grounding conductor.
- B. The equipment grounding conductor must be irreversibly spliced.
- C. The grounding conductor must be bonded directly to the primary grounding electrode.
- D. Racking needs to be bonded to a supplemental grounding electrode conductor.
Answer: A
NEW QUESTION 39
A dwelling has a 200A main load center with a 150 main breaker. Which of the following is the MOST powerful 240V inverter that can be installed in the house using the existing main panelboard with a backfed breaker?
- A. 7, 689W
- B. 9, 600W
- C. 21, 600W
- D. 17, 280W
Answer: D
NEW QUESTION 40
Which of the following is the required MINIMUM width of the working space In front of ac disconnect equipment?
- A. 36 in. from the top of the ungrounded inverter terminals
- B. 36 in. from the right and left edges of the inverter
- C. 30 in. from all exposed live parts and terminals
- D. 30 in. or the width of the ac disconnect, whichever is greater
Answer: D
NEW QUESTION 41
When installing an ungrounded PV system with an open-circuit voltage of 450Vdc and a maximum voltage of
3000Vdc which procedures should be followed to establish an electrically safe condition?
- A. Apply lockout/tagout devices and install a listed isolation transformer.
- B. Determine possible sources electrical supply an avoid exposure to energized conductors or parts.
- C. Verify that disconnecting device blades are closed and test conductors using an adequately rated detector.
- D. Mount inverters on nonconductive supports and temporarily ground one dc circuit conductor.
Answer: B
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 grounding member shall be last to make and first to break contact with the mating connector
- B. The grounding member shall be interconnectchangeable with receptacles in other electrical systems.
- C. The connector shall have a non-polarized configuration.
- 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 is an NEC-indicate means to identify PV source and output circuits at accessible points of termination connection, and splices?
- A. Conduct stickers
- B. Insulation type
- C. Tagging
- D. Placards
Answer: C
NEW QUESTION 44
The AHJ for enforcement of the NEC has which responsibility?
- A. Making interpretations of the rules and deciding on approval of equipment and material
- B. Inspecting factory-installed wire and equipment construction methods
- C. Approval equipment installation methods for efficiency, convenience, and adequacy for good service
- D. Inspecting installations under the exclusive control of the electric utility
Answer: A
NEW QUESTION 45
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. Ground the PV module frames, but not the mounting racks, to local grounding electrodes.
- B. Install a physical barrier on the back of the PV modules that prevent that prevents the conductors from being touched.
- C. Mount the PV modules on a one-axis (north-south) tracker, with supporting structures listed to UL 2703.
- D. Install PV modules with plastic, insulating the frames, and connect to a grounding electrode at the array.
Answer: B
NEW QUESTION 46
A7KW/ 14 KWh multimode systemhas been installed at a residence, ac-couple with the customer's existing
6.7kwh ac PV system. The system providers uninterrupted power to a protect loads subpanel, which is connected to a refrigerator, Microwave, 1.0 ton are conditioner, three lightning circuit, and the 6.7kwac PV system. One month later, the homeowner moves additional circuits to the protected loads subpanel, substantially increasing the loads. Why would this cause, the backfed interconnection breaker in the main service panel to trip?
- A. The toad exceeds the capacity of the interconnection breaker.
- B. The main service panel is no longer compliant with NCC 705.12.
- C. The load the protected loads subpanel exceeds the PV system ac rating by 25%.
- D. The total load exceeds the system's energy storage capacity of 14kWh.
Answer: A
NEW QUESTION 47
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. Grounding bushing
- C. Insulated bushing
- D. Threaded coupling
Answer: B
NEW QUESTION 48
Which electrical connection requires the use of a torque device to complete the connection per NEC requirements?
- A. Crimp-on log to the battery cable
- B. Screw terminals on an ac receptacle outlet
- C. Underground direct-burial twist-on wire connector
- D. Soldered splices in a conduit body
Answer: A
NEW QUESTION 49
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. 32A
- B. 30A
- C. 40A
- D. 42A
Answer: C
NEW QUESTION 50
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