ECS Electrical Tools and Equipment Safety 2

Question 1

Which instrument must be used to confirm a circuit is de-energized as part of the safe isolation procedure?

Accepted Answer

An approved voltage indicator or test meter proved on a known live source before and after testing

Answer

An approved voltage indicator must be proved on a known live source before and after testing the isolated circuit to confirm the instrument is working correctly.

Question 2

What color coding typically identifies 110V reduced-voltage power tools on a construction site?

Accepted Answer

Yellow

Answer

Yellow is the internationally recognized color for 110V center-tapped-to-earth (CTE) equipment used on construction sites to reduce shock risk.

Question 3

What is the main purpose of a lockout/tagout (LOTO) procedure?

Accepted Answer

To isolate energy sources and prevent equipment from being accidentally re-energized during maintenance

Answer

LOTO procedures physically isolate and lock out energy sources so that machinery cannot be started while workers are performing maintenance or repairs.

Question 4

How frequently should portable electrical tools undergo a formal visual inspection on an active construction site?

Accepted Answer

Before every use — or at minimum daily when in continuous use

Answer

Construction sites expose tools to damage daily, so a pre-use visual check before every use is the safest standard practice.

Question 5

What safety feature on a power tool prevents it from starting accidentally if it is dropped or the trigger is bumped?

Accepted Answer

Trigger lock-off or safety guard on the trigger

Answer

A trigger lock-off button requires deliberate two-step action to start the tool, preventing accidental activation if the trigger is inadvertently pressed.

ECS - Electrotechnical Certification Scheme Practice Test

ECS - Electrotechnical Certification Scheme Practice Test

ECS Electrical Tools and Equipment Safety 2