最新的NABCEP Board認證 PVIP考試題庫

問題1

Per NEC 690.11, what is the maximum allowable DC voltage for a PV system requiring arc-fault circuit protection?

A. 150V

B. 600V

C. 1000V

D. 80V

正確答案: C

問題2

Most electric service providers require interactive PV equipment to comply with which for interconnection to their distribution grid?

A. UL 1741

B. UL 16998

C. UL 60947-1

D. UL 2703

正確答案: C

問題3

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 current on each source circuit coming into the combiner box.

B. Open all fuse holders in the combiner box.

C. Remove any surge suppression devices from the circuits.

D. Test for voltage on the positive out

正確答案: B

問題4

A 15 kW array has a PR of 0.88 and 1600 kWh/m²/year insolation. What is the annual output?

A. 22,440 kWh

B. 19,800 kWh

C. 24,000 kWh

D. 21,120 kWh

正確答案: D

問題5

A module's power is 340W at STC. At 700 W/m² and 40°C with a coefficient of -0.38%/°C, what is the output?

A. 260W

B. 248W

C. 236W

D. 224W

正確答案: C

問題6

A 10 kW system has a total derate factor of 0.85 and operates at 5 PSH. What is the daily output in summer with 10% soiling loss?

A. 47.5 kWh

B. 38.25 kWh

C. 42.5 kWh

D. 36.0 kWh

正確答案: B

問題7

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

正確答案: C

問題8

A grounding electrode is required at the location of all ground-mounted and pole-mounted PV arrays. Which type of 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. Concrete-encased 4 AWG copper conductor at least 20 ft, in length

C. Aluminum structural member in direct contact with the earth for 10ft, or more

D. Metal underground water pipe in direct contact with the earth for 10 ft. or more.

正確答案: C

問題9

While surveying a potential three-phase project, an installer measures the voltage at the point of utility interconnection. The results are as follows:
* Phase to phase: 240V
* Phase A neutral: 120V
* Phase B neutral: 208V
* Phase C neutral: 120V
Which is a likely cause of these reading?

A. Missing ground in the transformer

B. Phase-to-phase power imbalances

C. High-leg transformer configuration

D. Supply-side ground fault

正確答案: C

問題10

A rooftop PV array uses a ballasted racking system with a total weight of 4 psf. The roof's maximum allowable load is 20 psf, including a snow load of 15 psf. Is this installation permissible?

A. Yes, with no restrictions

B. Yes, if snow load is mitigated

C. No, requires structural reinforcement

D. No, exceeds total load

正確答案: B

問題11

A microinverter system uses 30 modules, each rated at 320W, with an inverter efficiency of 96%. The AC output is connected to a 208V three-phase service. What is the total three-phase power output?

A. 10.0 kW

B. 9.2 kW

C. 9.6 kW

D. 8.8 kW

正確答案: B

問題12

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. Reduce the array size to lower fault current

B. No action needed; the rating is sufficient

C. Replace the disconnect with a 15 kA-rated unit

D. Install a current-limiting fuse upstream

正確答案: C

問題13

A PV system's annual energy production is 15,000 kWh. After maintenance, production increases by 5%.
What is the new annual output?

A. 15,750 kWh

B. 16,250 kWh

C. 15,500 kWh

D. 16,000 kWh

正確答案: A

問題14

Which is a requirement for designated battery rooms?

A. must be equipped with panic hardware and open m the direction of egress.

B. illumination shall be provided by lighting outlets controlled by automated means only.

C. Gas pipe equipment must be constructed and installed for a Hazardous Class I location.

D. Battery cabinets, racks, or trays must have a minimum clearance of 12 in. from any wall.

正確答案: A

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