Pass PVIP Exam - Real Test Engine PDF with 72 Questions
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NEW QUESTION 28
Aerial lifts used to hoist equipment and PV modules to roof levels may be fieldmodifiedfor uses other than those intended by the manufacturer with which approval or certification?
- A. Tested and approval by the distributor of the equipment
- B. Certified via the state material handling safely statutes
- C. Approval by the local AHJ for meeting safely regulations
- D. Certified in writing by the manufacturer or an NRTL
Answer: C
NEW QUESTION 29
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. An appropriately rated and sized of resistive elements for each twisted pair be located at, or very near to, the data logger terminals
- D. The instrument wiring must be large (larger than # 18 AWG) to handle current from each battery and must be a double- insulated type.
Answer: A
NEW QUESTION 30
According to the NEC, where on a residential PV system MUST the labeling describing the type of rapid shutdown be located?
- A. A close as practicable to the PV array requiring rapid shutdown
- B. On or no more than 1 m (3. 3 ft) from the service disconnecting meant
- C. At point on the residence designated by the AKJ and fire marshal
- D. On the rapid shutdown initiation device.
Answer: D
NEW QUESTION 31
A PV system installation utilizes micro inverters connected to each module of the array. Each micro inverter has a nominal rated output of 250WV. Single phase. The microinverters are listed so that multiple inverters may be connected in parallel to a single feeder circuit, and each inverter has ancable and connector rated for
30A. What is the MAXIMUM number of inverters that may be wired together on a single 30A feeder circuit?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 32
A dwelling has a 200A main load center with a 150 main breaker. Which of the following is the MOST powerful 240V inverter that can be installed in the house using the existing main panelboard with a backfed breaker?
- A. 7, 689W
- B. 9, 600W
- C. 21, 600W
- D. 17, 280W
Answer: D
NEW QUESTION 33
When installing an ungrounded PV system with an open-circuit voltage of 450Vdc and a maximum voltage of
3000Vdc which procedures should be followed to establish an electrically safe condition?
- A. Verify that disconnecting device blades are closed and test conductors using an adequately rated detector.
- B. Mount inverters on nonconductive supports and temporarily ground one dc circuit conductor.
- C. Determine possible sources electrical supply an avoid exposure to energized conductors or parts.
- D. Apply lockout/tagout devices and install a listed isolation transformer.
Answer: C
NEW QUESTION 34
An installer is using 1/2 in lag boits to secure roof-monitoring hardware to rafters through a roof deck. Which of the following should the installer predrill?
- A. A pilot hole one-half the length of the bolt
- B. A 1/8 in, pilot hole through the roof into the rafter
- C. A 5/16 in pilot hole through the roof into the rafter
- D. A pilot hole one-fourth the length of the bolt
Answer: C
NEW QUESTION 35
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. 32A
- B. 40A
- C. 24A
- D. 200A
Answer: A
NEW QUESTION 36
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 VP array and more than 5 ft. In length the building.
- C. More than 1 ft, from the PV array or more than 3 ft, from the point of entry of the building.
- D. More than 10ft, from the PV array or more than 5 ft. in length inside the building
Answer: C
NEW QUESTION 37
The following dc portion of a PV schematic (functionally grounded conductor not shown) is submitted to the building official for permit approval. The building official, who also is he AHJ, allow the system to be installed by requiring what NEC-required MINIMUM size equipment grounding conductor at Location A?
- A. #6 aluminum
- B. #8 copper
- C. #10 copper
- D. #12 aluminum
Answer: C
NEW QUESTION 38
A ground-mounted PV system operating with an open-critical voltage of 550V is in a public park. Which installation procedure will meet NEC requirements for protecting the public from potential electric shock?
- A. Ground the PV module frames, but not the mounting racks, to local grounding electrodes.
- B. Install a physical barrier on the back of the PV modules that prevent that prevents the conductors from being touched.
- C. Install PV modules with plastic, insulating the frames, and connect to a grounding electrode at the array.
- D. Mount the PV modules on a one-axis (north-south) tracker, with supporting structures listed to UL 2703.
Answer: B
NEW QUESTION 39
A 1. 100 ft, 2 ranch home with cathedralcallingshas a 14 ft. x 41 ft. 8 in , south-facing , composite shingle roof. An engineer has determined that the home's 2 in, x 6 in. on-center roof rafters are strong enough to gold a solar electric system. The system will have 62.25 in. x 32.50 in. modules with a 1-in gap between modules and a standard twin-rillmounting system number of modules that can fit on the roof on under these conditions?
- A. 40 modules in landscape
- B. 30 modules in portrait
- C. 28 modules in portrait
- D. 35 modules in landscape
Answer: D
NEW QUESTION 40
A metal condult containing an array circuit with Vmo of 400Vdc is connected to a metal enclosure at the location where the concentric knockouts have been punched by the manufacturer. Which method of attachment should be used?
- A. Threaded coupling
- B. Grounding bushing
- C. Insulated bushing
- D. Sealing locknut
Answer: B
NEW QUESTION 41
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 have a non-polarized configuration.
- B. The grounding member shall be interconnectchangeable with receptacles in other electrical systems.
- C. The grounding member shall be last to make and first to break contact with the mating connector
- D. The connector shall be installed so as to guard against inadvertent with live parts by persons.
Answer: D
NEW QUESTION 42
Which of the following voltages should be included on the dc disconnected label to indicate MAXIMUM system voltage?
- A. Non-temperature-corrected V
- B. Temperature-corrected V
- C. Source circuit V
- D. 600 V
Answer: B
NEW QUESTION 43
An 8 AWG bare copper equipment ground conductor (EGC) is wire tied to the module mounting structure of a commercial rooftop solararray. After a few years of operation, some spots on the EGC begin to turn a green color and appear to be corroding more significantly that other places. What would the MOST likely cause of the problem?
- A. Array racking touching the EGC at multiple points
- B. A break in the EGC, leaving the array ungrounded
- C. Bypass dlode failures inducing current on the EGC
- D. Nyton wire ties in contact with the copper wire
Answer: A
NEW QUESTION 44
Which circuits are on the utility side of a service point?
- A. Feeders
- B. Service conductors
- C. Service lateral
- D. Service entrance conductors
Answer: B
NEW QUESTION 45
Which load path connections need to be analyzed when determining live and dead loads on a PV array system installed directly to a metal seam roof?
- A. Module to rail to metal seam roof, metal seam roof to top plate system
- B. Module to rail, rail to roof sheathing, roof sheathing to wall, wall to base plate/foundation system
- C. Rail to metal seam roof, metal seam roof to top plate, top plate to wall system
- D. Module to rail to metal seam roof, metal seam roof sheathing/rather system.
Answer: D
NEW QUESTION 46
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