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Penetration testers simulate PVIP exam PDF
NEW QUESTION 34
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 35
Aerial lifts used to hoist equipment and PV modules to roof levels may be fieldmodifiedfor uses other than those intended by the manufacturer with which approval or certification?
- A. Approval by the local AHJ for meeting safely regulations
- B. Tested and approval by the distributor of the equipment
- C. Certified via the state material handling safely statutes
- D. Certified in writing by the manufacturer or an NRTL
Answer: A
NEW QUESTION 36
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. 30A
- B. 42A
- C. 32A
- D. 40A
Answer: D
NEW QUESTION 37
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 38
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 39
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 40
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 41
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. More than 1 ft, from the VP array and more than 5 ft. In length the building.
- C. Within the array boundary and more than 3.ft from the point of entry of the building.
- D. More than 1 ft, from the PV array or more than 3 ft, from the point of entry of the building.
Answer: D
NEW QUESTION 42
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 43
Thermal imaging infrared cameras can be used to help find which of the following system operational issues?
- A. Blind spot fault in a source circuit
- B. Battery state of charge in a multimode system
- C. Loose PV input circuit terminations in a combiner box
- D. Intensity of solar insolation to determine power output
Answer: A
NEW QUESTION 44
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. 21, 600W
- B. 7, 689W
- C. 17, 280W
- D. 9, 600W
Answer: C
NEW QUESTION 45
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 46
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 47
A grid-connected PV system on a dwelling is producing 30% less power than expected. The conductors from threes strings of modules enter into a 3-pole fused dc disconnect, and each ungrounded conductor is connected to a separate pole. On the inverter side of the switch terminals, the three strings are combined. The dc disconnect switch is opened. The voltages on the array side of theswitchare 440 on string #1, 444V on string
#2, and 0V on string #3. The dc disconnect is then closed and the inverter resumes operating, still producing about 30% less power than expected. A clamp-on ammeter is used to measure the dc current of each string of each string of modules where they enter the rooftop junction box. The operating currents of each string are
3.9A for string #1, 3 85A for string #2, and 4.3 A for string #3. What is the MOST likely with the system?
- A. Positive and negative output conductors of string #3 are faulted together.
- B. String #3 has an open connection and is not contributing any voltage.
- C. There is lower module mismatch in string #3 than in string #1 and #2.
- D. A ground fault is causing the current from strings #1 and #2 to flow into string #3.
Answer: A
NEW QUESTION 48
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. 10.2%
- B. 8.6%
- C. 9.5%
- D. 7.4%
Answer: B
NEW QUESTION 49
The following dc portion of a PV schematic (functionally grounded conductor not shown) is submitted to the building official for permit approval. The building official, who also is he AHJ, allow the system to be installed by requiring what NEC-required MINIMUM size equipment grounding conductor at Location A?
- A. #12 aluminum
- B. #6 aluminum
- C. #10 copper
- D. #8 copper
Answer: C
NEW QUESTION 50
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 51
In the middle of a winter day, the data acquisition system for a ground-mounted PV system with large central inverters sends an email alert that system performance is at 50% based on irradiance and temperature performance calculations. No inverters are completely offline. The closed technician is a 4-hour drive from the site, and there are no cameras on site. Which is the BEST response to this situation?
- A. Call the data acquisition company to report a monitoring system failure.
- B. Dispatch the technician to the site t investigate the low performance issue in person.
- C. Report the low performance to theinverter manufacturer and request that a technical be sent to the site for a warranty claim.
- D. Review power output and weather conditions via the monitoring portal, and review local weather reports.
Answer: D
NEW QUESTION 52
How should stratification be eliminated in a set of large, stationary, stationary flooded lead-acid batteries?
- A. Enable equalization.
- B. Rotate the battery positions
- C. Discharge to 80 depth of discharge.
- D. Add 50% diluted sulfuric acid.
Answer: A
NEW QUESTION 53
Which of the following should a PV installer do during dc insulation resistance testing?
- A. Close ac and dc disconnects and have the system running for at least 5 minutes before testing.
- B. Remove surge suppression equipment from the circuit being tested.
- C. Wait until is raining and all wiring is damp to conduct the test.
- D. Connect the megohmmeters's negative terminal to the dc circuit insulation
Answer: D
NEW QUESTION 54
According to the NEC, if the PV system disconnect and the building service disconnect are at different locations, there MUST be a/an:
- A. Means of locking out both disconnects when the PV system inverter is being serviced.
- B. Permanent plaque or directory that indicates the location of thePV utility connection.
- C. Interface that shuts down the PV system if the utility connection is lost.
- D. Permanent plaque or directory that indicates the locations of both disconnects.
Answer: D
NEW QUESTION 55
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 56
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 57
Which insulation color is allowed for a current-carrying roottop dc conductor on a functionally grounded 6kw PV system?
- A. White
- B. Red
- C. Green/yellow
- D. Green
Answer: B
NEW QUESTION 58
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 59
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Tested Material Used To PVIP Test Engine: https://www.newpassleader.com/NABCEP/PVIP-exam-preparation-materials.html
Steps Necessary To Pass The PVIP Exam: https://drive.google.com/open?id=1sll6o1VQ7V_SjhCE5DjqvZwBwx0cJFWO