Master 2021 Latest The Questions NABCEP Board and Pass PVIP Real Exam!
Penetration testers simulate PVIP exam PDF
NEW QUESTION 16
Which of the following voltages should be included on the dc disconnected label to indicate MAXIMUM system voltage?
- A. Source circuit V
- B. Non-temperature-corrected V
- C. Temperature-corrected V
- D. 600 V
Answer: C
NEW QUESTION 17
The NEC requires that PV systems installed on dwellings incorporate which of the following components?
- A. Blocking diodes across each module
- B. Dc lightning surge arrestors
- C. A lockable utility disconnect at the point-of-utility interconnection
- D. A dc ground-fault protect device
Answer: C
NEW QUESTION 18
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 19
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 20
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 21
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 22
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 23
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 24
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 25
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, install source circuit fuses, and measure open-circuit voltage.
- B. Install source circuit fuses, verify that all equipment-grounding conductors are secure, and measure ac line voltage.
- C. Perform visual inspection, install source circuit fuses, and measure open-circuit current.
- D. Perform visual inspection, check polarity and measure open-circuit voltage.
Answer: D
NEW QUESTION 26
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 27
A connector not listed to be used in a concealed location and being used as a disconnect for PV equipment shall comply with which of the following?
- A. The grounding member shall be last to make and first to break contact with the mating connector
- B. The grounding member shall be interconnectchangeable with receptacles in other electrical systems.
- C. The connector shall have a non-polarized configuration.
- D. The connector shall be installed so as to guard against inadvertent with live parts by persons.
Answer: D
NEW QUESTION 28
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 29
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. Intermittent ground connections
- C. High voltage
- D. Loose module connections
Answer: A
NEW QUESTION 30
Which electrical connection requires the use of a torque device to complete the connection per NEC requirements?
- A. Screw terminals on an ac receptacle outlet
- B. Underground direct-burial twist-on wire connector
- C. Crimp-on log to the battery cable
- D. Soldered splices in a conduit body
Answer: C
NEW QUESTION 31
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 32
Which of the following requires a UL listing or its equivalent?
- A. System labels and markings
- B. Grounding electrode clamp
- C. System manuals
- D. Lag screws
Answer: B
NEW QUESTION 33
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 34
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 35
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