LLC Material Selection & Properties 2

Question 1

Which connector material is most resistant to corrosion in coastal saltwater environments for landscape lighting?

Accepted Answer

Stainless steel 316

Answer

Stainless steel 316 contains molybdenum, which provides superior resistance to chloride corrosion found in coastal saltwater environments.

Question 2

What is the primary advantage of using silicone-insulated wire over PVC-insulated wire in landscape lighting applications near heat sources?

Accepted Answer

Higher temperature rating

Answer

Silicone insulation can withstand temperatures up to 200°C, making it suitable for use near heat sources where PVC insulation would degrade.

Question 3

Which lens material provides the best impact resistance for pathway lights in high-traffic areas?

Accepted Answer

Polycarbonate

Answer

Polycarbonate is virtually unbreakable compared to glass and acrylic, making it the best choice for high-traffic areas where physical impact is likely.

Question 4

When selecting transformer enclosure material for a wet location, which material offers the best combination of corrosion resistance and structural integrity?

Accepted Answer

Aluminum alloy

Answer

Aluminum alloy transformer enclosures resist corrosion naturally, provide excellent structural strength, and dissipate heat effectively in wet locations.

Question 5

What copper wire gauge has a current-carrying capacity of approximately 20 amperes for 12V landscape lighting circuits?

Accepted Answer

12 AWG

Answer

12 AWG copper wire is rated for approximately 20 amperes, making it appropriate for landscape lighting circuits requiring that capacity.

(LLC) Landscape Lighting Certification Practice Test

(LLC) Landscape Lighting Certification Practice Test

LLC Material Selection & Properties 2