LLC Safety Procedures & PPE 2

Question 1

Before excavating to bury low-voltage landscape lighting wire, what is the required first step in most US jurisdictions?

Accepted Answer

Call 811 to request underground utility locating

Answer

811 is the national 'Call Before You Dig' number that triggers free utility marking to prevent striking buried lines.

Question 2

Which class of fire extinguisher is appropriate if a landscape lighting transformer ignites due to an electrical fault?

Accepted Answer

Class C

Answer

Class C extinguishers are rated for energized electrical equipment fires and use non-conductive agents.

Question 3

A technician needs to splice low-voltage wire in a wet garden area. Which connector type best maintains waterproof integrity?

Accepted Answer

Self-sealing gel-filled IDC connector

Answer

Gel-filled insulation displacement connectors seal out moisture and prevent corrosion at splice points in outdoor, wet locations.

Question 4

When working on a 120V landscape lighting circuit that feeds low-voltage transformers, the technician should treat exposed conductors as:

Accepted Answer

Energized until personally verified with a meter

Answer

NFPA 70E requires electrically qualified workers to verify de-energization with a properly rated meter before treating conductors as safe.

Question 5

What is the OSHA-mandated minimum arc flash boundary calculation trigger voltage for landscape lighting control panels?

Accepted Answer

50 volts AC

Answer

OSHA 29 CFR 1910.333 requires shock-protection boundaries starting at 50 volts AC and above.

(LLC) Landscape Lighting Certification Practice Test