Unique Top-selling PVIP Exams - New 2021 NABCEP Pratice Exam
NABCEP Board Dumps PVIP Exam for Full Questions - Exam Study Guide
NEW QUESTION 10
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. 40A
- B. 32A
- C. 30A
- D. 42A
Answer: A
NEW QUESTION 11
A grounding electrode is required at the location of all ground-mounted and pole-mounted PV arrays. Which typeof grounding electrode is NOT permitted for arrays. Which type of the grounding electrode is NOT permitted for array grounding?
- A. Metal frame of a building or structure in direct with the earth for 10 ft. or more.
- B. Metal underground water pipe in direct contact with the earth for 10 ft. or more.
- C. Concrete-encased 4 AWG copper conductor at least 20 ft, in length
- D. Aluminum structural member in direct contact with the earth for 10ft, or more
Answer: D
NEW QUESTION 12
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 13
Thermal imaging infrared cameras can be used to help find which of the following system operational issues?
- A. Battery state of charge in a multimode system
- B. Loose PV input circuit terminations in a combiner box
- C. Intensity of solar insolation to determine power output
- D. Blind spot fault in a source circuit
Answer: D
NEW QUESTION 14
An installer has decided to use 31 in. long. 3.1/2 in diameter conical ground screws as the footings for a
3.840W solar electric system. Access to he is too difficult to pour concrete footings. The soll is classified as sandy loam. The design wind speed is 90 mph with an uplift force of 32 ibs/ft2. What is the MINIMUM number of screw required to resist uplift loads?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 15
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. Install a physical barrier on the back of the PV modules that prevent that prevents the conductors from being touched.
- B. Ground the PV module frames, but not the mounting racks, to local grounding electrodes.
- 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: A
NEW QUESTION 16
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 17
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 18
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 19
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. Racking needs to be bonded to a supplemental grounding electrode conductor.
- B. The grounding conductor must be bonded directly to the primary grounding electrode.
- C. The equipment grounding conductor must be irreversibly spliced.
- D. Each PV module needs to be bonded to the equipment grounding conductor.
Answer: D
NEW QUESTION 20
Which is a requirement for designated battery rooms?
- A. Gas pipe equipment must be constructed and installed for a Hazardous Class I location.
- B. must be equipped withpanic hardware and open m the directionof egress.
- C. illumination shall be provided by lightingoutlets controlled by automated means only.
- D. Battery cabinets, racks, or trays must have a minimum clearance of 12 in. from any wall.
Answer: B
NEW QUESTION 21
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 22
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 23
An installer troubleshooting a ground-mounted array finds It to be performing as expected most of the time, but a ground-fault error is indicated on hot days. The inverter is in a shaded location. Which of the following should theinstaller check for FIRST when troubleshooting this array?
- A. Pinched module wiring
- B. Loose module connections
- C. High voltage
- D. Intermittent ground connections
Answer: A
NEW QUESTION 24
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 25
A technician has been called to a scale due to a low-performing array. The technician will perform tests in the
24-source circuit combiner box. After putting on the correct PPE and turning off and performing lock.tagout of the inverted and combiner disconnect. Which is the next step to safely begin electrical testing in the combiner box?
- A. Open all fuse holders in the combiner box.
- B. Test for current on each source circuit coming into the combiner box.
- C. Test for voltage on the positive out
- D. Remove any surge suppression devices from the circuits.
Answer: A
NEW QUESTION 26
The AHJ for enforcement of the NEC has which responsibility?
- A. Inspecting factory-installed wire and equipment construction methods
- B. Approval equipment installation methods for efficiency, convenience, and adequacy for good service
- C. Making interpretations of the rules and deciding on approval of equipment and material
- D. Inspecting installations under the exclusive control of the electric utility
Answer: C
NEW QUESTION 27
Which circuits are on the utility side of a service point?
- A. Service lateral
- B. Feeders
- C. Service entrance conductors
- D. Service conductors
Answer: D
NEW QUESTION 28
Which of the following is the required MINIMUM width of the working space In front of ac disconnect equipment?
- A. 36 in. from the right and left edges of the inverter
- B. 36 in. from the top of the ungrounded inverter terminals
- 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 29
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 30
Most electric service providers require interactive PV equipment to comply with which for interconnection to their distribution grid?
- A. UL 1741
- B. UL 60947-1
- C. UL 2703
- D. UL 16998
Answer: B
NEW QUESTION 31
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