New 2021 PVIP exam questions Welcome to download the newest Exams4Collection PVIP PDF dumps (72 Q&As)
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NEW QUESTION 37
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. Rail to metal seam roof, metal seam roof to top plate, top plate to wall 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. Module to rail to metal seam roof, metal seam roof sheathing/rather system.
Answer: D
NEW QUESTION 38
Which circuits are on the utility side of a service point?
- A. Service entrance conductors
- B. Service lateral
- C. Feeders
- D. Service conductors
Answer: D
NEW QUESTION 39
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. 50A
- B. 0
- C. 400A
- D. 1
Answer: D
NEW QUESTION 40
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: C
NEW QUESTION 41
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. Supplement 1/4 in, in thick aluminumplate electrode buried 30 in. down and located 7 ft, away.
- D. Buried water piping system using 40 ft. of 2 in. PVC piping located 10 ft awat.
Answer: B
NEW QUESTION 42
Which of the following MUST be referenced for determining a site's design wind speed?
- A. The ASHRAE Handbook_fundamentals in effect
- B. The jurisdiction's local building code in effect
- C. The NEC version in effect
- D. The module manufacture's design wind speed
Answer: A
NEW QUESTION 43
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 44
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. 10 AWG
- B. 6 AWG
- C. 4 AWG
- D. 8 AWG
Answer: C
NEW QUESTION 45
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: D
NEW QUESTION 46
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. The equipment grounding conductor must be irreversibly spliced.
- B. The grounding conductor must be bonded directly to the primary grounding electrode.
- C. Each PV module needs to be bonded to the equipment grounding conductor.
- D. Racking needs to be bonded to a supplemental grounding electrode conductor.
Answer: C
NEW QUESTION 47
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. 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.
- 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. 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.
Answer: B
NEW QUESTION 48
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. Phase-to-phase power imbalances
- B. High-leg transformer configuration
- C. Supply-side ground fault
- D. Missing ground in the transformer
Answer: B
NEW QUESTION 49
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. 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 50
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. The system has experienced above-average degradation and a module warranty claim should be explored.
- C. There is an intermittent inverter failure that is causing production to be lower than expected and the inverter should be repaired.
- D. A combination of normal module degradation combined with cloudy weather has caused lower output in the past few years.
Answer: D
NEW QUESTION 51
When running horizontal 1-1/4 in, electrical metallic tubing (EMT) with compression fittings, what is the MAXIMUM permissible distance between condult supports?
- A. 3 ft
- B. 10 ft
- C. 20 ft
- D. 14 ft
Answer: B
NEW QUESTION 52
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. Insulation has become an electrical conductor since it has changed its composition.
- B. Short-circuit current is present at the PV source-circuit terminals of the disconnect device because of electrical leakage.
- C. Ungrounded conductors are conducing current event the ground-fault device has activated.
- D. Cracked insulation has allowed water intrusion that resulted in oxidation of the copper conductors.
Answer: A
NEW QUESTION 53
Which temperature coefficient is used in the calculation to verify energy production of a PV system?
A)
B)
C)
D)
- A. Option
- B. Option
- C. Option
- D. Option
Answer: D
NEW QUESTION 54
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. Insulated bushing
- C. Threaded coupling
- D. Sealing locknut
Answer: A
NEW QUESTION 55
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 56
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. 18 in.
- B. 36 in.
- C. 12 in.
- D. 24 in.
Answer: D
NEW QUESTION 57
What is an arc-flash boundary?
- A. The distance within which qualified personnel can safely perform bare-handed work on exposed energized electrical equipment operating at 50 volts or more.
- B. The approach limit distance within which inadvertent movement exposes personnel to increase ris due to electrical arc-over potential.
- C. The approach limit distance within which a person could receive a second-degree burn in the event that an electrical arc flash were to occur
- D. The approach limit distance from energized electrical equipment within which a person is considered to be exposed to full circuit voltage.
Answer: B
NEW QUESTION 58
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. An appropriately rated and sized of resistive elements for each twisted pair be located at, or very near to, the data logger terminals
- C. Individual nonfused disconnects are required for each set of wiringbecause all of the signals must be isolated from each other.
- D. Each set of twisted pairs must be provided with properly rated fuses that are physically located at the battery.
Answer: D
NEW QUESTION 59
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. Bypass dlode failures inducing current on the EGC
- C. Array racking touching the EGC at multiple points
- D. A break in the EGC, leaving the array ungrounded
Answer: C
NEW QUESTION 60
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PVIP exam questions from Exams4Collection dumps: https://www.exams4collection.com/PVIP-latest-braindumps.html (72 Q&As)
Free 2021 NABCEP Board PVIP dumps are available on Google Drive shared by Exams4Collection: https://drive.google.com/open?id=11Rp4CnbXUQlPQe4aY5nptXyK_-qntvj7
