LLC Cheat Sheet 2026

The 30 highest-yield LLC facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which control method allows a homeowner to adjust landscape lighting using a smartphone app? → Smart home/Wi-Fi integrated lighting controller
2. The primary safety concern when using a powder-actuated fastening tool to mount a landscape transformer bracket to masonry is: → Projectile hazard from fasteners that miss or pass through material
3. Which lighting technology is considered the most eco-friendly? → LED and solar-powered lights
4. Which chemical hazard may be present in soil when installing landscape lighting in older residential properties built before 1978? → Lead from leaded paint chips or lead arsenate pesticide residues in soil
5. Which color temperature (CCT) is most commonly recommended for sustainable landscape lighting to minimize disruption to nocturnal wildlife? → 2700K (warm white)
6. In Landscape Lighting Certification, which action should be taken first when a safety incident occurs? → Ensure the safety of all personnel
7. What is the recommended burial depth for low-voltage landscape lighting cables? → 6 inches
8. On a set of landscape lighting plans, what does 'Sheet L-1 of 3' indicate? → This is the first sheet in a three-sheet landscape lighting drawing set
9. Which plan view symbol typically represents a path light or bollard fixture on a landscape lighting blueprint? → A small circle with a dot in the center
10. What does a voltage rating of CAT III on a multimeter mean for landscape lighting electrical work? → The meter is rated for distribution panel and branch circuit measurements up to 600V
11. Which of the following connector types provides the most reliable weatherproof connection for low-voltage landscape lighting wire splices? → Gel-filled waterproof wire connectors (IDC or locking type)
12. On a blueprint, a zone is labeled 'Zone A – 6 fixtures @ 7W each.' What is the total wattage load for this zone? → 42W
13. Which optical lens shape produces the widest spread pattern for ground-level area illumination in landscape lighting? → Asymmetric lens
14. A landscape lighting plan uses a symbol showing a half-circle with dashes radiating from the flat side. This most likely represents: → A flood or wall-wash fixture showing its beam spread
15. Which wire gauge carries the most current and is preferred for long landscape lighting runs exceeding 100 feet? → 12 AWG
16. How does collaboration enhance Material Selection & Properties in Landscape Lighting Certification? → It brings diverse perspectives and improves outcomes
17. Which communication protocol is designed specifically for large-scale professional lighting control and is widely used in theatrical and architectural lighting? → DMX512
18. What minimum burial depth is required for rigid metal conduit (RMC) installed for landscape lighting under a residential driveway? → 12 inches
19. What is the purpose of a Safety Data Sheet (SDS) in Landscape Lighting Certification operations? → To provide hazard information about chemicals and materials
20. A lighting plan shows a circle with a cross inside it near a tree. What does this symbol most likely represent? → An uplight fixture aimed at the tree
21. What is the importance of staying current with trends in Installation Techniques for Landscape Lighting Certification? → It ensures practices remain effective and relevant
22. When installing a path light along a garden bed, what is the ideal angle to drive the ground stake to ensure stability against lateral movement? → Slightly angled away from foot traffic at 80–85°
23. During a service call, a technician finds that a hub-and-spoke connector has corroded wire crimp connections. The BEST long-term repair is to: → Replace the connector hub with a direct-burial-rated splice with waterproof gel caps
24. What is the recommended maximum load percentage for a low-voltage landscape lighting transformer to ensure long-term reliability and efficiency? → 75%
25. Which of the following is a key principle of workplace safety in Landscape Lighting Certification? → Reporting all near-misses and incidents
26. A zone's cable tests for continuity but fixtures are still dark. Voltage at the transformer terminal is 12.3 VAC. What should be checked next? → Voltage at the zone terminal block to confirm the breaker or fuse for that zone is intact
27. A technician measures 11.8 VAC at the transformer terminal but only 9.5 VAC at the end of a long cable run. What adjustment should be made? → Replace the cable with a lower-gauge (thicker) wire or shorten runs
28. What is the purpose of a 'lighting zone layout' diagram included in a landscape lighting plan set? → To illustrate which fixtures are grouped on each transformer circuit
29. A quality inspection finds that wire connectors used to splice two runs underwater in a pond are standard wire nuts. What is the CORRECT assessment? → Code violation — submersible-rated waterproof connectors or junction boxes must be used
30. Which of the following actions is required before energizing a newly completed landscape lighting system for final inspection? → Confirming all fixtures are Listed for their installed location type