PVIP exam questions for practice in 2021 Updated 72 Questions
Updated Nov-2021 Premium PVIP Exam Engine pdf - Download Free Updated 72 Questions
NEW QUESTION 38
Which of the following is an NEC requirement regarding access for large-scale PV electric power production facilities?
- A. Access to remote isolating equipment for servicing is allowed for individual other than qualified persons when the equipment is enclosed within a secure structure.
- B. All fencing and associated gates must have ac and dc current and voltage exposure labvels and must be electrically isolated from the solar facility.
- C. 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.
- D. Field-applied hazard markings must be installed, and access to the supply station is to be restricted by fencing or other adequate means.
Answer: D
NEW QUESTION 39
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. 3-1/2If the building is equipped with a dehumidifier and the batteries are on insulting surfaces
- B. 4 ftWhether or not the building is equipped with a dehumidifier or the batteries are insulting surfaces
- C. 3 ft. when insulted conducted conductors are used between terminals.
- D. 6 ft.When the floor is insulated and no dehumidifier is installed.
Answer: C
NEW QUESTION 40
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 41
A PV system is located at 41 N latitude. The sun angle is 23 on December 21 at solar noon. Assuming that the
65 ft tree is directly south of the PV array and will grow 20 ft. over the life of the PV system, what is the MNIMUM distance the tree to the button of the prevent shading?
- A. 153 ft.
- B. 201 ft.
- C. 98 ft.
- D. 167 ft.
Answer: B
NEW QUESTION 42
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 43
A 1. 100 ft, 2 ranch home with cathedralcallingshas a 14 ft. x 41 ft. 8 in , south-facing , composite shingle roof. An engineer has determined that the home's 2 in, x 6 in. on-center roof rafters are strong enough to gold a solar electric system. The system will have 62.25 in. x 32.50 in. modules with a 1-in gap between modules and a standard twin-rillmounting system number of modules that can fit on the roof on under these conditions?
- A. 40 modules in landscape
- B. 35 modules in landscape
- C. 28 modules in portrait
- D. 30 modules in portrait
Answer: B
NEW QUESTION 44
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 45
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 46
A grid-interactive PV system with battery backup is being installed with a ground-mounted PV array located
200 ft, from the inverter and batteries. The dc PV output circuit has overcuit has overcurrent protection rated from 30A. To reduce voltage drop between the array and batteries, the output circuit wire size was determined to be 6 AWG. The fused dc disconnect between the inverted and batteries is rated for 300A. What is the required size of the equipment grounding conductor between the metal battery case and the inverter?
- A. 6 AWG
- B. 4 AWG
- C. 10 AWG
- D. 8 AWG
Answer: B
NEW QUESTION 47
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. 600 V
- D. Temperature-corrected V
Answer: D
NEW QUESTION 48
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. On or no more than 1 m (3. 3 ft) from the service disconnecting meant
- C. A close as practicable to the PV array requiring rapid shutdown
- D. On the rapid shutdown initiation device.
Answer: D
NEW QUESTION 49
Which of the following requires a UL listing or its equivalent?
- A. Lag screws
- B. System manuals
- C. Grounding electrode clamp
- D. System labels and markings
Answer: C
NEW QUESTION 50
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 51
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 52
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 53
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 54
When running horizontal 1-1/4 in, electrical metallic tubing (EMT) with compression fittings, what is the MAXIMUM permissible distance between condult supports?
- A. 20 ft
- B. 10 ft
- C. 14 ft
- D. 3 ft
Answer: B
NEW QUESTION 55
Which circuits are on the utility side of a service point?
- A. Feeders
- B. Service entrance conductors
- C. Service conductors
- D. Service lateral
Answer: C
NEW QUESTION 56
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 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.
- 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 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.
Answer: A
NEW QUESTION 57
A PV system was installed in July 2017 under the 2017 NEC. The system has a string inverter located inside a garage on a wall 10 ft, from the outside wall and 1oft, from the ac load center at the point of utility connection.
The PV system has a PV array on the roof. Which of the following represents the PV rapid shutdown system requirement for the controlled PV system conductors associated with this PV array?
- A. More than 10ft, from the PV array or more than 5 ft. in length inside the building
- B. Within the array boundary and more than 3.ft from the point of entry of the building.
- C. More than 1 ft, from the PV array or more than 3 ft, from the point of entry of the building.
- D. More than 1 ft, from the VP array and more than 5 ft. In length the building.
Answer: C
NEW QUESTION 58
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. Buried water piping system using 40 ft. of 2 in. PVC piping located 10 ft awat.
- B. Supplemental grounding electrode located 5 ft, away.
- C. Supplement 1/4 in, in thick aluminumplate electrode buried 30 in. down and located 7 ft, away.
- D. Supplemental copper plated steel grounding electrode located 8 ft, away.
Answer: D
NEW QUESTION 59
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: C
NEW QUESTION 60
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: A
NEW QUESTION 61
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. Wiring insulation has degraded and is resulting in leakage.
- B. Typical module degradation has lowered the output of the system's strings.
- C. Soling of modules has reduced the efficiency of the system.
- D. The conductor insulation is functioning as intended.
Answer: D
NEW QUESTION 62
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