NFPA70
NFPA70 EXAM QUESTIONS AND ANSWERS GRADED TO
PASS.
What is an Arc Flash? answer >>>> A short circuit that jumps through the air
from one exposed conductor to another.
What makes an AR Flash dangerous? answer >>>> Temperatures of up to 35k' F,
shrapnel, molten metal, chocks, shockwave (2k lbs./foot^2), sound (140 dB), burn
injuries.
Hazard/Risk Category 1 contains PPE requirements. What are they? answer >>>>
hardhat, safety glasses, hearing protection, heavy duty leather gloves, leather
work shoes.
What proper electrical PPE protect you from? answer >>>> burns, electrical
shock and small shrapnel.
What is PPE? answer >>>> Personal Protective Equipment
If you are qualified to work on low-voltage equipment, what is the cut-off point
where you are not allowed to perform electrical tasks at higher voltages? answer
>>>> 50 - 600V
What is the most important part of creating an electrically safe work condition
answer >>>> Test for Voltage
, NFPA70
Once an electrically safe work condition is created, shock and arc flash protection
are no longer necessary. (T/F) answer >>>> True
The Arc Flash Protection Boundary is the distance from an arc source where an
unprotected worker will receive first-degree burns. (T/F). answer >>>> False
When dressing in layers for arc flash protection, non-FR material can be counted
toward your total level of protection. (T/F). answer >>>> False
When dressing in layers for arc flash protection, non-FR material can be counted
toward your total level of protection. (T/F). answer >>>> False
Crossing the _________ ___________ ___________ is the equivalent of
performing live work. answer >>>> Prohibited Approach Boundary
For energized circuits, escorted unqualified persons are allowed within which
Hazard Protection Approach Boundaries? answer >>>> Limited Approach
Boundary
If an electrical circuit that normally operates above 50 volts has been de-
energized but not tested to verify that the circuit is in an electrically safe work
condition, which of the following apply? answer >>>> Requirements associated
with flash protection boundary must be followed.
Only qualified persons shall perform tasks such as testing and voltage measuring
within the limited approach boundary of energized electrical conductors
operating at 50 volts or more or where an electrical hazard exists. (T/F). answer
>>>> True
NFPA70 EXAM QUESTIONS AND ANSWERS GRADED TO
PASS.
What is an Arc Flash? answer >>>> A short circuit that jumps through the air
from one exposed conductor to another.
What makes an AR Flash dangerous? answer >>>> Temperatures of up to 35k' F,
shrapnel, molten metal, chocks, shockwave (2k lbs./foot^2), sound (140 dB), burn
injuries.
Hazard/Risk Category 1 contains PPE requirements. What are they? answer >>>>
hardhat, safety glasses, hearing protection, heavy duty leather gloves, leather
work shoes.
What proper electrical PPE protect you from? answer >>>> burns, electrical
shock and small shrapnel.
What is PPE? answer >>>> Personal Protective Equipment
If you are qualified to work on low-voltage equipment, what is the cut-off point
where you are not allowed to perform electrical tasks at higher voltages? answer
>>>> 50 - 600V
What is the most important part of creating an electrically safe work condition
answer >>>> Test for Voltage
, NFPA70
Once an electrically safe work condition is created, shock and arc flash protection
are no longer necessary. (T/F) answer >>>> True
The Arc Flash Protection Boundary is the distance from an arc source where an
unprotected worker will receive first-degree burns. (T/F). answer >>>> False
When dressing in layers for arc flash protection, non-FR material can be counted
toward your total level of protection. (T/F). answer >>>> False
When dressing in layers for arc flash protection, non-FR material can be counted
toward your total level of protection. (T/F). answer >>>> False
Crossing the _________ ___________ ___________ is the equivalent of
performing live work. answer >>>> Prohibited Approach Boundary
For energized circuits, escorted unqualified persons are allowed within which
Hazard Protection Approach Boundaries? answer >>>> Limited Approach
Boundary
If an electrical circuit that normally operates above 50 volts has been de-
energized but not tested to verify that the circuit is in an electrically safe work
condition, which of the following apply? answer >>>> Requirements associated
with flash protection boundary must be followed.
Only qualified persons shall perform tasks such as testing and voltage measuring
within the limited approach boundary of energized electrical conductors
operating at 50 volts or more or where an electrical hazard exists. (T/F). answer
>>>> True
