CLC Outdoor & Landscape Lighting 4

Question 1

Which type of outdoor lighting is specifically designed to deter intruders by activating only when motion is detected?

Accepted Answer

Occupancy-sensor floodlights

Answer

Occupancy-sensor (motion-activated) floodlights detect movement and switch on to deter potential intruders and alert occupants.

Question 2

When calculating the transformer capacity needed for a 12V landscape lighting system, what safety margin above the total fixture wattage load is typically recommended?

Accepted Answer

25%

Answer

A 25% safety margin above the total connected wattage is standard practice to prevent transformer overload and allow for future expansion.

Question 3

In outdoor landscape lighting design, what is 'shadowing' (also called shadow projection)?

Accepted Answer

Placing a light source in front of an object to cast its shadow onto a surface behind it

Answer

Shadowing places a light source in front of and below a plant or object, projecting its dramatic shadow pattern onto a wall or surface behind it.

Question 4

What wiring configuration distributes voltage most evenly across multiple 12V landscape fixtures on a single run, reducing voltage drop?

Accepted Answer

Parallel (home run) wiring

Answer

Parallel (home run) wiring connects each fixture directly to the transformer with its own pair of wires, ensuring each fixture receives the same voltage.

Question 5

Which outdoor lighting application specifically requires fixtures rated for wet locations (not just damp locations) according to NEC guidelines?

Accepted Answer

Fixtures mounted above a swimming pool within 5 feet of the water edge

Answer

NEC Article 680 requires wet-rated fixtures for locations within or directly adjacent to pool areas where direct water exposure is possible.

(CLC) Certified Lighting Consultant Practice Test

(CLC) Certified Lighting Consultant Practice Test

CLC Outdoor & Landscape Lighting 4