PVIP無料問題集「NABCEP PV Installation Professional (PVIP) Board Certification」

質問 1

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）42A

（B）32A

（C）40A

（D）30A

正解：C 解答を投票する

質問 2

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）7.5 kW

（B）8.5 kW

（C）9.0 kW

（D）10.0 kW

正解：B 解答を投票する

質問 3

A bank of batteries with capability of supplying 250A and a maximum voltage of 325V is housed in a concrete structure in a very humid location. There is service access alsie between rows of batteries. What is the REQUIRED safety distance between the rows of batteries.

（A）3 ft. when insulted conducted conductors are used between terminals.

（B）3-1/2 If the building is equipped with a dehumidifier and the batteries are on insulting surfaces

（C）6 ft. When the floor is insulated and no dehumidifier is installed.

（D）4 ft Whether or not the building is equipped with a dehumidifier or the batteries are insulting surfaces

正解：A 解答を投票する

質問 4

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）24

（B）20

（C）14

（D）18

正解：B 解答を投票する

質問 5

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）Supply-side ground fault

（B）High-leg transformer configuration

（C）Missing ground in the transformer

（D）Phase-to-phase power imbalances

正解：B 解答を投票する

質問 6

When commissioning a PV system, which test is most critical to verify proper operation of the array before connecting to the inverter?

（A）Short-circuit current test

（B）Ground-fault detection test

（C）Insulation resistance test

（D）Open-circuit voltage test

正解：C 解答を投票する

質問 7

Per NEC 690.4, who is qualified to install a PV system?

（A）Only a NABCEP-certified installer

（B）A journeyman with PV experience

（C）A licensed electrician or supervised trainee

（D）Anyone with basic electrical knowledge

正解：C 解答を投票する

質問 8

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

（A）16,000 kWh

（B）16,250 kWh

（C）15,750 kWh

（D）15,500 kWh

正解：C 解答を投票する

質問 9

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）Install a current-limiting fuse upstream

（B）Reduce the array size to lower fault current

（C）Replace the disconnect with a 15 kA-rated unit

（D）No action needed; the rating is sufficient

正解：C 解答を投票する

質問 10

Which electrical connection requires the use of a torque device to complete the connection per NEC requirements?

（A）Crimp-on log to the battery cable

（B）Screw terminals on an ac receptacle outlet

（C）Underground direct-burial twist-on wire connector

（D）Soldered splices in a conduit body

正解：A 解答を投票する

PVIP 無料問題集「NABCEP PV Installation Professional (PVIP) Board Certification」

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