LLC Safety Procedures & PPE 3

Question 1

An installer is routing low-voltage cable beneath a driveway. What is the minimum burial depth recommended by NEC Table 300.5 for direct-buried low-voltage (<30V) landscape cable?

Accepted Answer

6 inches

Answer

NEC Table 300.5 specifies a minimum 6-inch burial depth for listed low-voltage (under 30V) landscape lighting cable.

Question 2

During a summer installation in direct sun, a technician begins feeling dizzy and stops sweating. This most likely indicates:

Accepted Answer

Heat stroke — a medical emergency

Answer

Cessation of sweating combined with dizziness is a hallmark sign of heat stroke, which is life-threatening and requires immediate emergency response.

Question 3

What is the purpose of a lockout/tagout (LOTO) procedure when servicing a 120V landscape lighting transformer?

Accepted Answer

To prevent accidental re-energization during service

Answer

LOTO procedures per OSHA 29 CFR 1910.147 prevent unexpected energization of equipment during maintenance, protecting the servicing technician.

Question 4

Which footwear requirement should landscape lighting technicians follow when working near energized 120V equipment outdoors?

Accepted Answer

EH-rated (Electrical Hazard) boots meeting ASTM F2413

Answer

ASTM F2413 EH-rated boots provide secondary electrical hazard protection by resisting current flow through the sole to ground.

Question 5

A landscape lighting transformer is installed on an exterior wall. What minimum clearance from the ground is typically required for the 120V outlet or connection point per NEC 210.52?

Accepted Answer

12 inches

Answer

NEC 210.52 and manufacturer guidelines typically specify a 12-inch minimum height for outdoor receptacles to reduce flood and moisture exposure risk.

(LLC) Landscape Lighting Certification Practice Test

(LLC) Landscape Lighting Certification Practice Test

LLC Safety Procedures & PPE 3