PDF問題（2025年最新）実際のNABCEP PVIP試験問題
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質問 # 19
Per NEC 690.11, what is the maximum allowable DC voltage for a PV system requiring arc-fault circuit protection?
- A. 1000V
- B. 600V
- C. 80V
- D. 150V
正解：A
質問 # 20
An installer is terminating PV conductors in a combiner box. What is the minimum torque specification for a
10 AWG connection if not specified by the manufacturer?
- A. 30 in-lb
- B. 10 in-lb
- C. 40 in-lb
- D. 20 in-lb
正解：D
質問 # 21
A PV module is mounted with a 2-inch standoff from a shingle roof. What is the minimum clearance required for fire access per the International Fire Code (IFC)?
- A. 1 inch
- B. 3 inches
- C. 9 inches
- D. 6 inches
正解：B
質問 # 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.
正解：B
質問 # 23
An installer is working on a 1000V DC PV array. What is the minimum PPE required per NFPA 70E for arc flash protection?
- A. Category 2 PPE
- B. Category 4 PPE
- C. Category 1 PPE
- D. Category 3 PPE
正解：A
質問 # 24
The point-of-utility connection of a residential utility-interactive PV system is in the main distribution panel. If the busbars of the main distribution panel are rated at 200A, and if the distribution panel has a 200A main breaker, the rated output current of the inverter cannot exceed.
- A. 24A
- B. 40A
- C. 32A
- D. 200A
正解：C
質問 # 25
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
正解：B
質問 # 26
A PV system uses 10 AWG USE-2 wire for a 150-foot source circuit run with an Isc of 8A. The terminals are rated at 75°C. What is the ampacity of the conductor after applying NEC temperature and conduit fill adjustments at 35°C?
- A. 40A
- B. 45A
- C. 30A
- D. 35A
正解：D
質問 # 27
A PV system has a nameplate capacity of 10 kW DC and operates with a total system derate factor of 0.85.
What is the expected AC output power under standard test conditions (STC)?
- A. 10.0 kW
- B. 7.5 kW
- C. 8.5 kW
- D. 9.0 kW
正解：C
質問 # 28
An installer has decided to use 31 in. long. 3.1/2 in diameter conical ground screws as the footings for a 3.840 W 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：C
質問 # 29
A PV system is installed in a location with an average annual ambient temperature of 30°C. If the module's NOCT (Nominal Operating Cell Temperature) is 45°C, what is the expected cell temperature under standard operating conditions (800 W/m² irradiance)?
- A. 50°C
- B. 60°C
- C. 45°C
- D. 55°C
正解：D
質問 # 30
A AWG THWN-2 PV output conductors from two PV arrays are run in the same 3 in, conduit to their respective functionally grounded inverters in the building. The three PV source circuits are each protected by a
15A fuse in the combiner box at the array. The conduit, which is strapped directly to the roof,is exposed to design temperatures of 140' F (60'C) during its 30 ft.
Exposed run. What is the MAXIMUM current carrying capability value of the PV output conductors?
- A. 61A
- B. 54A
- C. 42A
- D. 34A
正解：D
質問 # 31
Which temperature coefficient is used in the calculation to verify energy production of a PV system?
- A. OptionB
- B. OptionA
- C. OptionD
- D. OptionC
正解：B
質問 # 32
When doing initial 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 equipment grounding conductor must be irreversibly spliced.
- C. Each PV module needs to be bonded to the equipment grounding conductor.
- D. The grounding conductor must be bonded directly to the primary grounding electrode.
正解：C
質問 # 33
A module's Isc is 9A at STC. At 600 W/m² irradiance, what is the expected Isc?
- A. 5.4A
- B. 7.2A
- C. 6.3A
- D. 6.0A
正解：A
質問 # 34
A PV array is installed near a pool. What is the minimum distance required from the water's edge per NEC
690.31?
- A. 10 feet
- B. 20 feet
- C. 5 feet
- D. 15 feet
正解：A
質問 # 35
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