LLC Landscape Lighting Electrical Wiring & Installation 2

Question 1

When installing low-voltage landscape lighting wire underground, what is the minimum burial depth required by most local codes?

Accepted Answer

6 inches

Answer

Most codes require low-voltage landscape wire to be buried at least 6 inches deep to protect it from accidental damage.

Question 2

A customer's landscape lighting keeps tripping the GFCI outlet. What is the MOST likely cause?

Accepted Answer

Moisture intrusion into a fixture or connection

Answer

GFCI trips in outdoor lighting are most commonly caused by moisture entering fixtures or wire connections, creating a ground fault.

Question 3

What does the term 'voltage drop' mean in the context of a low-voltage lighting system?

Accepted Answer

The reduction in voltage along the wire run due to resistance

Answer

Voltage drop is the reduction in voltage that occurs along a wire run because the wire's resistance consumes some electrical energy.

Question 4

Which wire connection method is BEST for outdoor underground low-voltage landscape lighting splices?

Accepted Answer

Waterproof gel-filled connectors (direct-burial connectors)

Answer

Waterproof gel-filled direct-burial connectors seal out moisture and are rated for underground use, preventing corrosion and ground faults.

Question 5

When using a daisy-chain (series) wiring method for landscape lights, where do the fixtures with the MOST voltage drop appear?

Accepted Answer

At the end of the wire run farthest from the transformer

Answer

In a daisy-chain layout, each successive fixture receives slightly less voltage, so fixtures at the farthest end experience the greatest voltage drop.

(LLC) Landscape Lighting Certification Practice Test

(LLC) Landscape Lighting Certification Practice Test

LLC Landscape Lighting Electrical Wiring & Installation 2