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Best Quality NABCEP PVIP Exam Questions
NEW QUESTION 23
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-half the length of the bolt
- B. A 5/16 in pilot hole through the roof into the rafter
- C. A 1/8 in, pilot hole through the roof into the rafter
- D. A pilot hole one-fourth the length of the bolt
Answer: B
NEW QUESTION 24
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. Test for voltage on the positive out
- B. Open all fuse holders in the combiner box.
- C. Remove any surge suppression devices from the circuits.
- D. Test for current on each source circuit coming into the combiner box.
Answer: B
NEW QUESTION 25
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. 98 ft.
- B. 153 ft.
- C. 201 ft.
- D. 167 ft.
Answer: C
NEW QUESTION 26
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 27
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. 4 ftWhether or not the building is equipped with a dehumidifier or the batteries are insulting surfaces
- B. 3-1/2If the building is equipped with a dehumidifier and the batteries are on insulting surfaces
- C. 6 ft.When the floor is insulated and no dehumidifier is installed.
- D. 3 ft. when insulted conducted conductors are used between terminals.
Answer: D
NEW QUESTION 28
According to the NEC, where on a residential PV system MUST the labeling describing the type of rapid shutdown be located?
- A. A close as practicable to the PV array requiring rapid shutdown
- B. On the rapid shutdown initiation device.
- C. At point on the residence designated by the AKJ and fire marshal
- D. On or no more than 1 m (3. 3 ft) from the service disconnecting meant
Answer: B
NEW QUESTION 29
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 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.
- B. 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.
- C. 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.
- D. 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.
Answer: D
NEW QUESTION 30
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: D
NEW QUESTION 31
Most electric service providers require interactive PV equipment to comply with which for interconnection to their distribution grid?
- A. UL 2703
- B. UL 1741
- C. UL 16998
- D. UL 60947-1
Answer: D
NEW QUESTION 32
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 33
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 34
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 35
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. 28 modules in portrait
- C. 30 modules in portrait
- D. 35 modules in landscape
Answer: D
NEW QUESTION 36
A site has a known magnetic declination of 14 west. What should the corrected azimuth reading of the array be in order to be facing true south?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 37
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. Mount inverters on nonconductive supports and temporarily ground one dc circuit conductor.
- B. Verify that disconnecting device blades are closed and test conductors using an adequately rated detector.
- C. Apply lockout/tagout devices and install a listed isolation transformer.
- D. Determine possible sources electrical supply an avoid exposure to energized conductors or parts.
Answer: D
NEW QUESTION 38
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 39
The AHJ for enforcement of the NEC has which responsibility?
- A. Inspecting factory-installed wire and equipment construction methods
- B. Inspecting installations under the exclusive control of the electric utility
- C. Making interpretations of the rules and deciding on approval of equipment and material
- D. Approval equipment installation methods for efficiency, convenience, and adequacy for good service
Answer: C
NEW QUESTION 40
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