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PV Installation Professional (PVIP) Board Certification Questions and Answers

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Questions # 1:

According to the NEC, where on a residential PV system MUST the labeling describing the type of rapid shutdown be located?

Options:

On the rapid shutdown initiation device.

On or no more than 1 m (3. 3 ft) from the service disconnecting meant

At point on the residence designated by the AKJ and fire marshal

A close as practicable to the PV array requiring rapid shutdown

Answer

Questions # 2:

A PV array’s output drops by 8% due to shading from 10 AM to 2 PM. If unshaded output is 12 kW, what is the shaded output?

Options:

10.0 kW

10.6 kW

11.0 kW

11.2 kW

Answer

Questions # 3:

A tap conduct is to be connected to a feeder supplied by both a utility service source and a utility-interactive inverter source. The feeder utility source is a 400A breaker in a service panel, the inverter overcurrent protection device is rated at 100A, and the inverter continuous output current is 72. The tap conductor that is to be installed will be 17 ft. long. It will be located in a raceway and will supply a subpanel with a 50A main breaker.

What is the MINIMUM required ampacity of the tap conductor?

Options:

50A

163

400A

Answer

Questions # 4:

A homeowner is weighing the PV module options for a roof-mounted solar array. Which is a correct option to present to the homeowner?

Options:

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.

Rapid shutdown requirements within 1 ft of the array boundary.

Polycrystalline modules are more shade-tolerance than either amorphous or monocrystalline modules and allow a larger array to be installed, including in area where shading could be seasonally problematic.

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

Answer

Questions # 5:

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?

Options:

Grounding bushing

Insulated bushing

Sealing locknut

Threaded coupling

Answer

Questions # 6:

An installer troubleshooting a ground-mounted array finds It to be performing as expected most of the time, but a ground-fault error is indicated on hot days. The inverter is in a shaded location. Which of the following should the installer check for FIRST when troubleshooting this array?

Options:

High voltage

Loose module connections

Pinched module wiring

Intermittent ground connections

Answer

Questions # 7:

A PV system interconnects at a 480V three-phase service. The inverter output current is 20A per phase. What is the minimum size of the equipment grounding conductor (EGC) per NEC 250.122 if the OCPD is 30A?

Options:

14 AWG

12 AWG

10 AWG

8 AWG

Answer

Questions # 8:

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?

Options:

224W

236W

248W

260W

Answer

Questions # 9:

A PV system is installed on a dwelling with a single-phase 240V service. The inverter output is 7.2 kW. What is the minimum service conductor size per NEC 705.12 if the existing load is 50A?

Options:

2 AWG

1 AWG

1/0 AWG

2/0 AWG

Answer

Questions # 10:

Which of the following is an NEC-indicate means to identify PV source and output circuits at accessible points of termination connection, and splices?