Free Access NABCEP.PVIP.v2022-02-27.q25 Practice Test (Page 3)

Question 6

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.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.

B.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.

C.Microinverters can be installed with either polycrystalline or monocrystalline modules, negating the need for rapid shutdown compliance.

D.Rapid shutdown requirements within 1 ft of the array boundary.

Question 7

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.Each set of twisted pairs must be provided with properly rated fuses that are physically located at the battery.

B.Individual nonfused disconnects are required for each set of wiringbecause all of the signals must be isolated from each other.

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

Question 8

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.High-leg transformer configuration

C.Supply-side ground fault

D.Phase-to-phase power imbalances

Question 9

When running horizontal 1-1/4 in, electrical metallic tubing (EMT) with compression fittings, what is the MAXIMUM permissible distance between condult supports?

A.20 ft

B.14 ft

C.10 ft

D.3 ft

Question 10

A PV system was installed in July 2017 under the 2017 NEC. The system has a string inverter located inside a garage on a wall 10 ft, from the outside wall and 1oft, from the ac load center at the point of utility connection.
The PV system has a PV array on the roof. Which of the following represents the PV rapid shutdown system requirement for the controlled PV system conductors associated with this PV array?

A.Within the array boundary and more than 3.ft from the point of entry of the building.

B.More than 1 ft, from the PV array or more than 3 ft, from the point of entry of the building.

C.More than 10ft, from the PV array or more than 5 ft. in length inside the building

D.More than 1 ft, from the VP array and more than 5 ft. In length the building.

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Question 6

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Question 8

Question 9

Question 10

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