CTSP Electrical Hazards and Utility Line Safety 2

Question 1

Before beginning tree work in proximity to utility lines, a tree care company's most important first step is to:

Accepted Answer

Contact the utility company to coordinate the work and establish safe procedures

Answer

Post warning signs at the work site perimeter

Answer

Inspect all PPE for the crew

Answer

Notify the local fire department

Question 2

When a tree limb falls onto an energized power line, what is the FIRST action a ground worker should take?

Accepted Answer

Call 911 and warn bystanders to stay well back from the area

Answer

Cut the limb free using a fiberglass-handled tool

Answer

Pull the limb away using a rigging rope already attached to it

Answer

Approach carefully to assess whether the line is still energized

Question 3

The 'Limited Approach Boundary' in electrical safety is defined as:

Accepted Answer

The distance within which an unqualified person faces a shock hazard and may not enter without an escort

Answer

The maximum chainsaw bar length permitted near distribution lines

Answer

The minimum climb height allowed above energized conductors

Answer

The boundary established by the utility for public access during outages

Question 4

For energized lines rated above 50kV, how much additional minimum approach distance must unqualified workers add for every 10kV above 50kV?

Accepted Answer

4 inches (10 cm)

Answer

1 inch (2.5 cm)

Answer

6 inches (15 cm)

Answer

12 inches (30 cm)

Question 5

Which personal protective equipment provides primary electrical isolation for qualified line-clearance arborists working near energized conductors?

Accepted Answer

Rubber insulating gloves with leather protectors and other rubber insulating equipment

Answer

Class E hard hat alone

Answer

Fiberglass-handled tools used without gloves

Answer

Fire-resistant (FR) clothing as the sole protection

Question 6

In aerial lift operations, 'two-blocking' refers to:

Accepted Answer

The load block or hook contacting the boom tip, which can cause catastrophic rigging failure

Answer

Placing two wooden wedges to stabilize a cut section

Answer

A procedure requiring two workers to visually clear power line proximity

Answer

Dual blocking of outrigger pads for stability on soft ground

Question 7

ANSI A300 Part 7 (Integrated Vegetation Management) is most relevant to electrical utility tree work because it:

Accepted Answer

Establishes best management practices for utility right-of-way vegetation management

Answer

Sets minimum electrical rating requirements for arborist equipment

Answer

Requires all arborists to obtain an electrical contractor license

Answer

Mandates rubber insulating gloves for all outdoor tree work