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PV Installation Professional (PVIP) Board Certification Questions and Answers

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760 Students Passed

91% Average Score

95% Same Questions

Viewing page 2 out of 5 pages

Viewing questions 11-20 out of questions

Questions # 11:

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?

Question # 11

Options:

#12 aluminum

#10 copper

#8 copper

#6 aluminum

Answer

Questions # 12:

A site has an average wind speed of 25 mph and is classified as Exposure Category C per ASCE 7. What is the minimum wind design speed for the PV array structure?

Options:

90 mph

110 mph

130 mph

150 mph

Answer

Explanation

System Design (Questions 16-40)

Questions # 13:

A ground-mount array uses driven piles with a lateral load capacity of 500 lbs. The wind load calculation yields a lateral force of 600 lbs per pile. What must be done?

Options:

Increase pile depth

Add additional piles

Use a different foundation type

Any of the above

Answer

Questions # 14:

What is an arc-flash boundary?

Options:

The approach limit distance within which inadvertent movement exposes personnel to increase ris due to electrical arc-over potential.

The approach limit distance from energized electrical equipment within which a person is considered to be exposed to full circuit voltage.

The approach limit distance within which a person could receive a second-degree burn in the event that an electrical arc flash were to occur

The distance within which qualified personnel can safely perform bare-handed work on exposed energized electrical equipment operating at 50 volts or more.

Answer

Questions # 15:

A homeowner is concerned that a 6kWdc PV system might be experiencing a performance issue. The homeowner has noticed what appears to be declining production. The installer analyzes the following data acquisition system (DAS) results for each year since the installation:

Question # 15

Given the data, which is the MOST likely conclusion to draw?

Options:

The system has experienced above-average degradation and a module warranty claim should be explored.

A combination of normal module degradation combined with cloudy weather has caused lower output in the past few years.

There is a problem with the DAS because the peak sun hours do not correlate with production values and the das should be repaired.

There is an intermittent inverter failure that is causing production to be lower than expected and the inverter should be repaired.

Answer

Questions # 16:

A PV module is mounted with a 2-inch standoff from a shingle roof. What is the minimum clearance required for fire access per the International Fire Code (IFC)?

Options:

1 inch

3 inches

6 inches

9 inches

Answer

Questions # 17:

During commissioning, a PV system’s measured Voc is 10% lower than expected. What is the most likely cause?

Options:

Shading on one module

Open circuit in a string

High ambient temperature

Inverter malfunction

Answer

Questions # 18:

An 8 AWG bare copper equipment ground conductor (EGC) is wire tied to the module mounting structure of a commercial rooftop solar array. After a few years of operation, some spots on the EGCbegin to turn a green color and appear to be corroding more significantly that other places. What would the MOST likely cause of the problem?

Options:

Nyton wire ties in contact with the copper wire

A break in the EGC, leaving the array ungrounded

Bypass dlode failures inducing current on the EGC

Array racking touching the EGC at multiple points

Answer

Questions # 19:

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

Options:

3 ft

10 ft

14 ft

20 ft

Answer

Questions # 20:

A rooftop PV array has conductors running through a conduit exposed to sunlight on a roof with an ambient temperature of 40°C. The conduit is 2 inches above the roof surface. What is the NEC temperature adjustment factor for 90°C-rated conductors?