NCCER Core Power Tool Safety and Operation 2

Question 1

What does GFCI stand for, and why is it important for power tool use?

Accepted Answer

Ground Fault Circuit Interrupter - protects against shock

Answer

A GFCI detects ground faults and shuts off power in milliseconds to prevent electrical shock.

Question 2

What is the proper body position when operating a portable power saw?

Accepted Answer

Stand to the side, never directly behind the blade

Answer

Always stand to the side of the blade path to avoid the kickback zone.

Question 3

When should a power tool be inspected?

Accepted Answer

Before each use

Answer

Power tools must be inspected before each use to identify damage or missing safety features.

Question 4

What is the purpose of a dead-man switch on a power tool?

Accepted Answer

To shut off the tool when the operator releases the trigger

Answer

A dead-man switch automatically stops the tool when the trigger is released.

Question 5

What should be done with the chuck key after tightening a drill bit?

Accepted Answer

Remove it immediately - a spinning key becomes a projectile

Answer

The chuck key must be removed immediately. A spinning key becomes a dangerous projectile.

NCCER Core - National Center for Construction Education and Research Core Certification Practice Test