2025年最新の保証された成功できるPVIP問題集でNABCEPのPDF問題
格別な練習PV Installation Professional (PVIP) Board Certification問題集で最速合格させます
PVIP認証は、業界全体で、ソーラーPVシステムの設置における個人の知識とスキルの実証として、業界全体で認識されています。この認定は、キャリアを前進させようとしている専門家や、競争力のあるソーラー市場で自分自身を差別化したい企業にとって特に価値があります。認定プロセスには、個人の知識とスキルをテストする厳格な試験と、認定された専門家が業界の最新の開発に最新情報を入手できるようにするための継続教育の要件が含まれます。
質問 # 96
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
正解:A
質問 # 97
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
正解:A
質問 # 98
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. Rapid shutdown requirements within 1 ft of the array boundary.
- C. Microinverters can be installed with either polycrystalline or monocrystalline modules, negating the need for rapid shutdown compliance.
- 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.
正解:C
質問 # 99
Per NEC 690.8, a PV source circuit has an Isc of 9.5A. What is the minimum ampacity required for the conductor?
- A. 11.875A
- B. 15.0A
- C. 14.25A
- D. 9.5A
正解:A
質問 # 100
A module's Voc is 40V at STC. At -5°C with a coefficient of -0.33%/°C, what is the Voc?
- A. 45.0V
- B. 44.0V
- C. 42.0V
- D. 43.0V
正解:B
質問 # 101
A PV system is designed for a location with a peak sun hours (PSH) value of 4.5. The daily load is 18 kWh, and the system efficiency is 80%. What is the minimum array size required in kW?
- A. 4.0 kW
- B. 6.0 kW
- C. 5.0 kW
- D. 7.5 kW
正解:C
質問 # 102
Which of the following is an NEC-indicate means to identify PV source and output circuits at accessible points of termination connection, and splices?
- A. Conduct stickers
- B. Insulation type
- C. Tagging
- D. Placards
正解:C
質問 # 103
A rooftop PV array has conductors running through a conduit exposed to sunlight on a roof with an ambient temperature of 40°C. The conduit is 2 inches above the roof surface. What is the NEC temperature adjustment factor for 90°C-rated conductors?
- A. 0.87
- B. 1.00
- C. 0.96
- D. 0.91
正解:A
質問 # 104
A 20 kW array has a measured output of 16 kW at 800 W/m² irradiance. What is the performance loss due to irradiance?
- A. 20%
- B. 10%
- C. 30%
- D. 25%
正解:A
質問 # 105
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. 8 AWG
- B. 4 AWG
- C. 6 AWG
- D. 10 AWG
正解:B
質問 # 106
Insulation resistance testing is being performed on the conductors of a 3-year-old PV system. With a constant high test voltage being applied to a dc conductor, the test results in a high resistance reading. Which does this finding indicate?
- A. The conductor insulation is functioning as intended.
- B. Wiring insulation has degraded and is resulting in leakage.
- C. Typical module degradation has lowered the output of the system's strings.
- D. Soling of modules has reduced the efficiency of the system.
正解:A
質問 # 107
Which circuits are on the utility side of a service point?
- A. Feeders
- B. Service entrance conductors
- C. Service conductors
- D. Service lateral
正解:C
質問 # 108
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 connector shall be installed so as to guard against inadvertent with live parts by persons.
- B. The grounding member shall be last to make and first to break contact with the mating connector
- C. The grounding member shall be interconnectchangeable with receptacles in other electrical systems.
- D. The connector shall have a non-polarized configuration.
正解:A
質問 # 109
A ground-mount array uses driven piles with a lateral load capacity of 500 lbs. The wind load calculation yields a lateral force of 600 lbs per pile. What must be done?
- A. Add additional piles
- B. Increase pile depth
- C. Any of the above
- D. Use a different foundation type
正解:C
質問 # 110
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. 14 ft
- C. 20 ft
- D. 10 ft
正解:D
質問 # 111
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
正解:A
質問 # 112
Which of the following voltages should be included on the dc disconnected label to indicate MAXIMUM system voltage?
- A. 600 V
- B. Source circuit V
- C. Temperature-corrected V
- D. Non-temperature-corrected V
正解:C
質問 # 113
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. Individual nonfused disconnects are required for each set of wiringbecause all of the signals must be isolated from each other.
- B. Each set of twisted pairs must be provided with properly rated fuses that are physically located at the battery.
- C. The instrument wiring must be large (larger than # 18 AWG) to handle current from each battery and must be a double- insulated type.
- D. An appropriately rated and sized of resistive elements for each twisted pair be located at, or very near to, the data logger terminals
正解:B
質問 # 114
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
正解:B
質問 # 115
A PV system includes a 600V DC disconnect with a fault current rating of 10 kA. The available fault current from the inverter is 12 kA. What must be done to comply with NEC 110.10?
- A. No action needed; the rating is sufficient
- B. Replace the disconnect with a 15 kA-rated unit
- C. Install a current-limiting fuse upstream
- D. Reduce the array size to lower fault current
正解:B
質問 # 116
A PV array's tilt is 30° at a latitude of 40°N. What is the winter energy loss compared to optimal tilt?
- A. 10-15%
- B. 15-20%
- C. 20-25%
- D. 5-10%
正解:A
質問 # 117
A worker is installing modules on a roof 20 feet above grade. What OSHA fall protection is required?
- A. Personal fall arrest system
- B. Guardrails only
- C. Any of the above
- D. Safety net system
正解:A
質問 # 118
A PV array is tested with an IV curve tracer. The fill factor is 0.70, lower than the expected 0.80. What does this indicate?
- A. Open-circuit voltage drop
- B. Shunt resistance decrease
- C. Short-circuit current rise
- D. Series resistance increase
正解:D
質問 # 119
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