Deck 11: Installing Pv Systems

Question 1

What is the most common and least hazardous method used to disable an array or parts of an array?

Answer 1

Open circuiting is the most common method of disabling an array and presents the least amount of hazard.

Question 2

An opaque object allows light to pass through it.

Answer 2

False

Question 3

A rack type that uses masonry blocks or some other type of ballast to hold it in place is called a(n) ____________________.

Answer 3

ballasted rack

Question 4

What are the five structural loads an installer should be aware of when determining whether a structure can be used to support a PV array and associated equipment?

Question 5

The ____________________ load is the actual weight of the PV modules, the mounting structure used, and the other balance of system (BOS) components divided by the area of the array.

Question 6

The intentional connecting together of the PV output circuit conductors is called ____________________ circuiting.

Question 7

____________________ corrosion is an electrochemical process that causes corrosion where two dissimilar metals touch.

Question 8

Which is usually the largest of the structural loads and what is its typical range?

Question 9

A live load is a structural load that is a result of the weight of temporary items, including people, on the structure while the array is being installed.

Question 10

What are some appropriate materials for coating battery terminals to prevent corrosion?

Question 11

The wind load is the structural load caused by the wind and resulting in downward, lateral, or lifting forces on PV modules and mounting systems.

Question 12

____________________ mount systems have the modules mounted in a metal framework set at a tilt angle that can be adjusted.

Question 13

Module mounting systems can be fixed tilt or ____________________ tilt.

Question 14

Direct mount is a module mounting method where the modules are secured directly to the roof surface.

Question 15

What are the six considerations for choosing a PV mounting system?

Question 16

The ____________________ box is usually insulated and built from materials like wood, plastic, or some other corrosion resistant painted material.

Question 17

A metal tool or other object being dropped onto the battery terminals can cause a fire or ____________________.

Question 18

When does galvanic corrosion occur and how can it be prevented?

Question 19

A PV system should only be considered "live" when it is in operation.

Question 20

With a(n) ____________________ mount system the PV modules are mounted directly to a roof and have the same tilt angle as the roof.