(PDF) NABCEP Board PVIP Exam and Certification Test Engine
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NEW QUESTION # 15
According to the NEC, where on a residential PV system MUST the labeling describing the type of rapid shutdown be located?
- A. On the rapid shutdown initiation device.
- B. A close as practicable to the PV array requiring rapid shutdown
- C. At point on the residence designated by the AKJ and fire marshal
- D. On or no more than 1 m (3. 3 ft) from the service disconnecting meant
Answer: A
NEW QUESTION # 16
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 1/8 in, pilot hole through the roof into the rafter
- B. A 5/16 in pilot hole through the roof into the rafter
- C. A pilot hole one-fourth the length of the bolt
- D. A pilot hole one-half the length of the bolt
Answer: B
NEW QUESTION # 17
In the middle of a winter day, the data acquisition system for a ground-mounted PV system with large central inverters sends an email alert that system performance is at 50% based on irradiance and temperature performance calculations. No inverters are completely offline. The closed technician is a 4-hour drive from the site, and there are no cameras on site. Which is the BEST response to this situation?
- A. Report the low performance to theinverter manufacturer and request that a technical be sent to the site for a warranty claim.
- B. Dispatch the technician to the site t investigate the low performance issue in person.
- C. Review power output and weather conditions via the monitoring portal, and review local weather reports.
- D. Call the data acquisition company to report a monitoring system failure.
Answer: C
NEW QUESTION # 18
Which of the following is the required MINIMUM width of the working space In front of ac disconnect equipment?
- A. 30 in. from all exposed live parts and terminals
- B. 30 in. or the width of the ac disconnect, whichever is greater
- C. 36 in. from the top of the ungrounded inverter terminals
- D. 36 in. from the right and left edges of the inverter
Answer: B
NEW QUESTION # 19
A PV connection is being made at the center of a 300 ft. long 200 feeder. See the attack diagram. The feeder originates in the upper third of the 800A main service panel (800A main breaker) with a 200A breaker and terminates in a 200A main-lug-only subpanel. The rated output of the PV system inverter is 100A.
Which are the NIMUMUM actions required to achieve an NEC-compliant installation?
- A. Install a 325A at the PV source connection point on the portion of the feeder toward the subpanel, increase the capacity of this portion of the feeder to 325A, add a 200A main breaker to the subpanel, and move the 200A breaker to bottom of the main service panel, away from the 800A main breaker.
- B. Install a 200A breaker at the PV source connection point on the portion of the feeder toward the subpanel, maintain the capacity of the entire feeder, and move the 200A breaker to the bottom of the main service panel, away from the 800A main breaker.
- C. Install a 325A breaker at the PV source connection point on the portion of the feeder toward the subpanel. Increase thecapacityof the feeder from the main panel board to 325A breaker to the bottom of the main service panel, away from the 800 main breaker.
- D. Install a 200A breaker at the PV source connection point on the portion on the portion of the feeder toward the subpanel and move the 200A breaker to the top of the main service panel, adjust to the 800A main breaker.
Answer: C
NEW QUESTION # 20
A residential PV system uses two 120.240Vac utility-interactive inverters with a sealed lead-acid battery energy backup for protected loads. The MOST important protected load consideration when operating in the backup mode is that:
- A. The peak current from the sealed lead- acid batteries must not exceed peak demand currents.
- B. The stand-alone system configuration can adequately supply current to all protected load branch circuit.
- C. All protected loads are connected in multiwire branch circuits.
- D. The protected loads must have automatic restart function.
Answer: C
NEW QUESTION # 21
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. The instrument wiring must be large (larger than # 18 AWG) to handle current from each battery and must be a double- insulated type.
- C. Individual nonfused disconnects are required for each set of wiringbecause all of the signals must be isolated from each other.
- D. An appropriately rated and sized of resistive elements for each twisted pair be located at, or very near to, the data logger terminals
Answer: A
NEW QUESTION # 22
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 # 23
With all other environmental parameters being the same, which would be the expected reduction in KM performance of a PV system after an irradiance drop from 810w/m2 to 740w/m2?
- A. 10.2%
- B. 9.5%
- C. 7.4%
- D. 8.6%
Answer: D
NEW QUESTION # 24
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. 3-1/2If the building is equipped with a dehumidifier and the batteries are on insulting surfaces
- B. 3 ft. when insulted conducted conductors are used between terminals.
- C. 6 ft.When the floor is insulated and no dehumidifier is installed.
- D. 4 ftWhether or not the building is equipped with a dehumidifier or the batteries are insulting surfaces
Answer: B
NEW QUESTION # 25
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. Certified via the state material handling safely statutes
- B. Approval by the local AHJ for meeting safely regulations
- C. Certified in writing by the manufacturer or an NRTL
- D. Tested and approval by the distributor of the equipment
Answer: B
NEW QUESTION # 26
Thermal imaging infrared cameras can be used to help find which of the following system operational issues?
- A. Blind spot fault in a source circuit
- B. Loose PV input circuit terminations in a combiner box
- C. Battery state of charge in a multimode system
- D. Intensity of solar insolation to determine power output
Answer: A
NEW QUESTION # 27
Which of the following MUST be referenced for determining a site's design wind speed?
- A. The jurisdiction's local building code in effect
- B. The module manufacture's design wind speed
- C. The ASHRAE Handbook_fundamentals in effect
- D. The NEC version in effect
Answer: C
NEW QUESTION # 28
Which temperature coefficient is used in the calculation to verify energy production of a PV system?
A)
B)
C)
D)
- A. Option
- B. Option
- C. Option
- D. Option
Answer: D
NEW QUESTION # 29
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
Answer: B
NEW QUESTION # 30
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