PVIP Practice Test Questions Updated 72 Questions
NABCEP PVIP Dumps - Secret To Pass in First Attempt
NEW QUESTION 35
Which of the following voltages should be included on the dc disconnected label to indicate MAXIMUM system voltage?
- A. Non-temperature-corrected V
- B. 600 V
- C. Temperature-corrected V
- D. Source circuit V
Answer: C
NEW QUESTION 36
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, check polarity and measure open-circuit voltage.
- B. Perform visual inspection, install source circuit fuses, 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: A
NEW QUESTION 37
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. Nyton wire ties in contact with the copper wire
- B. A break in the EGC, leaving the array ungrounded
- C. Array racking touching the EGC at multiple points
- D. Bypass dlode failures inducing current on the EGC
Answer: C
NEW QUESTION 38
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 39
Which of the following tests measures axial uplift whenperforming load testing of driven-pile foundation members
- A. Resistance to horizontal movement
- B. Resistance to twisting
- C. Resistance to withdraw (pull-out) force
- D. Resistance to downward (Sinking force
Answer: C
NEW QUESTION 40
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. Short-circuit current is present at the PV source-circuit terminals of the disconnect device because of electrical leakage.
- C. Insulation has become an electrical conductor since it has changed its composition.
- D. Ungrounded conductors are conducing current event the ground-fault device has activated.
Answer: C
NEW QUESTION 41
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. High-leg transformer configuration
- D. Phase-to-phase power imbalances
Answer: C
NEW QUESTION 42
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. 8 AWG
- B. 4 AWG
- C. 6 AWG
- D. 10 AWG
Answer: B
NEW QUESTION 43
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 44
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 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.
- D. 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.
Answer: A
NEW QUESTION 45
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. 40A
- C. 30A
- D. 42A
Answer: B
NEW QUESTION 46
Which of the following is an NEC requirement regarding access for large-scale PV electric power production facilities?
- A. All fencing and associated gates must have ac and dc current and voltage exposure labvels and must be electrically isolated from the solar facility.
- 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. Field-applied hazard markings must be installed, and access to the supply station is to be restricted by fencing or other adequate means.
- 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: C
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. Insulated bushing
- C. Threaded coupling
- D. Grounding bushing
Answer: D
NEW QUESTION 48
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. Placards
- B. Tagging
- C. Insulation type
- D. Conduct stickers
Answer: B
NEW QUESTION 49
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. 17, 280W
- C. 9, 600W
- D. 21, 600W
Answer: B
NEW QUESTION 50
An installer was asked to provide a means to measure the voltage of each battery in a system. The bank is located 50 ft.
From the data logger. The installer will be using shielded. Twisted pairs of instrumentation wiring, all run in the bundle a conduct.
The signals are connected to isolated and ungrounded inputs at a data logger. Which safely precaution is MOST needed to protect the instrumentation wiring?
- A. The instrument wiring must be large (larger than # 18 AWG) to handle current from each battery and must be a double- insulated type.
- B. Each set of twisted pairs must be provided with properly rated fuses that are physically located at the battery.
- C. An appropriately rated and sized of resistive elements for each twisted pair be located at, or very near to, the data logger terminals
- D. Individual nonfused disconnects are required for each set of wiringbecause all of the signals must be isolated from each other.
Answer: B
NEW QUESTION 51
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. 8.6%
- C. 7.4%
- D. 10.2%
Answer: B
NEW QUESTION 52
Which electrical connection requires the use of a torque device to complete the connection per NEC requirements?
- A. Underground direct-burial twist-on wire connector
- B. Screw terminals on an ac receptacle outlet
- C. Soldered splices in a conduit body
- D. Crimp-on log to the battery cable
Answer: D
NEW QUESTION 53
Which is a requirement for designated battery rooms?
- A. Gas pipe equipment must be constructed and installed for a Hazardous Class I location.
- B. illumination shall be provided by lightingoutlets controlled by automated means only.
- C. must be equipped withpanic hardware and open m the directionof egress.
- D. Battery cabinets, racks, or trays must have a minimum clearance of 12 in. from any wall.
Answer: C
NEW QUESTION 54
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 55
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. Typical module degradation has lowered the output of the system's strings.
- B. The conductor insulation is functioning as intended.
- C. Wiring insulation has degraded and is resulting in leakage.
- D. Soling of modules has reduced the efficiency of the system.
Answer: B
NEW QUESTION 56
......
NABCEP PVIP Exam Dumps [2022] Practice Valid Exam Dumps Question: https://www.itexamsimulator.com/PVIP-brain-dumps.html
PVIP Dumps - Grab Out For [NEW-2022] NABCEP Exam: https://drive.google.com/open?id=17MaPH0h_TsoEeU1PO54wQjcxJIZ5PjDD
