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Core Curriculum NCCER| (6th Edition)|
Final Review 2025| Complete Questions
and Answers
A worker sees a frayed extension cord being used with a power tool on a job site. What should
happen next?
Stop using it right away and tag it out or report it. Frayed cords are a fire and shock risk, and
using damaged equipment is a huge safety violation.
A team is lifting materials with a crane and one worker is giving hand signals. Why is only one
signal person used?
To avoid confusion. Everyone needs to get signals from the same person so the operator
doesn't misread the directions and cause an accident.
An apprentice is tasked with using a reciprocating saw but hasn’t used one before. What should
they do?
Ask a qualified person for training or supervision. You shouldn’t use power tools unless
you’ve been properly trained—it’s both unsafe and against site rules.
A scaffold is missing a mid-rail but workers are using it anyway. What safety standard is being
violated?
Fall protection standards. OSHA requires guardrails with top and mid-rails to prevent falls—
this setup isn’t safe.
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A GFCI trips every time a tool is plugged into it. What could this mean?
There’s probably a ground fault or the tool is damaged. GFCIs shut off power to protect you
from shock, so if it keeps tripping, something’s wrong.
A new worker doesn’t know how to read a job site’s SDS. What does this mean for their safety?
They’re at risk if they handle chemicals without understanding them. SDS info helps workers
stay safe—everyone needs to know how to read them.
Why should you check the load chart before using a forklift?
To make sure you don’t lift too much. Every forklift has a max limit, and if you go over, it
can tip or drop the load.
A ladder is set up with a 1:2 ratio instead of 1:4. What problem does this cause?
It’s too steep and might fall backwards. The right angle keeps it stable—1 foot out for every
4 feet up is the safe setup.
A worker doesn’t wear ear protection around loud tools. What long-term effect could that have?
Hearing loss. Loud sounds over time can seriously damage your ears, even if you don’t
notice right away.
A fire extinguisher’s pressure gauge is in the red zone. Can it still be used?
Nope. That means it’s either over-pressurized or empty—it won’t work properly in a fire.
Core Curriculum NCCER| (6th Edition)|
Final Review 2025| Complete Questions
and Answers
A worker sees a frayed extension cord being used with a power tool on a job site. What should
happen next?
Stop using it right away and tag it out or report it. Frayed cords are a fire and shock risk, and
using damaged equipment is a huge safety violation.
A team is lifting materials with a crane and one worker is giving hand signals. Why is only one
signal person used?
To avoid confusion. Everyone needs to get signals from the same person so the operator
doesn't misread the directions and cause an accident.
An apprentice is tasked with using a reciprocating saw but hasn’t used one before. What should
they do?
Ask a qualified person for training or supervision. You shouldn’t use power tools unless
you’ve been properly trained—it’s both unsafe and against site rules.
A scaffold is missing a mid-rail but workers are using it anyway. What safety standard is being
violated?
Fall protection standards. OSHA requires guardrails with top and mid-rails to prevent falls—
this setup isn’t safe.
, 2
A GFCI trips every time a tool is plugged into it. What could this mean?
There’s probably a ground fault or the tool is damaged. GFCIs shut off power to protect you
from shock, so if it keeps tripping, something’s wrong.
A new worker doesn’t know how to read a job site’s SDS. What does this mean for their safety?
They’re at risk if they handle chemicals without understanding them. SDS info helps workers
stay safe—everyone needs to know how to read them.
Why should you check the load chart before using a forklift?
To make sure you don’t lift too much. Every forklift has a max limit, and if you go over, it
can tip or drop the load.
A ladder is set up with a 1:2 ratio instead of 1:4. What problem does this cause?
It’s too steep and might fall backwards. The right angle keeps it stable—1 foot out for every
4 feet up is the safe setup.
A worker doesn’t wear ear protection around loud tools. What long-term effect could that have?
Hearing loss. Loud sounds over time can seriously damage your ears, even if you don’t
notice right away.
A fire extinguisher’s pressure gauge is in the red zone. Can it still be used?
Nope. That means it’s either over-pressurized or empty—it won’t work properly in a fire.
