NFPA 70E Final Exam Questions and Verified
Answers
Question 1
You are required to verify an electrically safe work condition at a worksite. What is the
first step you will take when initiating the process?
Correct Answer
Determine all possible sources of electrical supply to the equipment
Question 2
NFPA 70E provides specific information to help companies prevent exposure to which
types of hazards?
Correct Answer
Electrical
Page 1 of 93
,Question 3
Which approach limit is at the point where work is the same as making contact with
the live part?
Correct Answer
Prohibited Approach Boundary
Question 1
NFPA 70E, Standard for Electrical Safety in the Workplace, consists of ? chapters;
17 informative annexes; the Foreword to NFPA 70E; and Article 90, Introduction.
Chapter 1 is divided into ? articles.
Correct Answer
3/5
Question 2
The appointment of the NFPA 70E Committee was announced on January 7, ? ,
and was formed to assist ? in preparing electrical safety standards that would
serve its requirements.
Correct Answer
1976/OSHA
Question 3
The 1995 edition of NFPA 70E included the concepts of ? and the establishment
of an arc. The 2000 edition continued to focus on establishment of flash
protection boundaries, the use of personal protective equipment, and ? to
assist the user in applying appropriate protective clothing and personal
protective equipment for common tasks.
Correct Answer
Limits of Approach/Charts
Question 4
The 2004 edition of NFPA 70E introduced the requirements of ? . The 2018
edition ? all previous editions.
Correct Answer
The energized electrical work permit / supersedes
Page 2 of 93
,Question 5
NFPA 70E Chapter 1 applies generally to electrical safety in the workplace.
Chapter 2 addresses safety-related ? requirements. Chapter 3 ? Chapter 1 with
safety requirements for special equipment.
Correct Answer
maintenance / supplements or modifies
Question 6
Explanatory material is included in the form of informational notes, which are
not enforceable as requirements. Brackets containing section references to
another NFPA document are for informational purposes only and are provided
as a guide to indicate the source of the extracted text.
Correct Answer
True
Question 7
An arc flash hazard is defined in Article 100 as a source of possible injury or
damage to health associated with the release of energy caused by an electric
arc. Informational Note No. 1 indicates that the likelihood of occurrence of an
arc flash incident increases when energized electrical conductors or circuit parts
are exposed or when they are within equipment in a(n) ? condition, provided a
person is interacting with the equipment in such a manner that could cause an
electric arc. An arc flash incident is not likely to occur under normal operating
conditions when enclosed energized equipment has been properly installed
and ?
Correct Answer
guarded or enclosed / maintained
Page 3 of 93
, Question 8
Arc rating is defined in Article 100, in part, as the value attributed to materials
that describes their performance with exposure to an electrical arc discharge
and is expressed ? . Informational Note No. 1 states, in part, that arc-rated
clothing or equipment has been tested for exposure to an electric arc and that
flame-resistant (FR) clothing without an arc rating ? been tested for exposure to
an electric arc
Correct Answer
in cal/cm2 / has not
Question 9
ATPV is defined in ASTM F1959/F1959M as the incident energy (cal/cm2) on a
material or a multilayer system of materials that results in a ? probability that
sufficient heat transfer through the tested specimen is predicted to cause the
onset of a second degree skin burn injury based on the Stoll curve. EBT is
defined in ASTM F 1959-06 as the incident energy (cal/cm2) on a material or a
material system that results in a ? probability of break open.
Correct Answer
50% / 50%
Question 10
The Informational Note to the definition of arc flash boundary states that,
according to the Stoll skin burn injury model, the onset of a second degree
burn on unprotected skin is likely to occur at an exposure of ? for one second.
Correct Answer
1.2 cal/cm2
Question 11
An approach limit at a distance from an exposed energized electrical conductor
or circuit part within which a shock hazard exists
Correct Answer
Limited Approach Boundary
Page 4 of 93
Answers
Question 1
You are required to verify an electrically safe work condition at a worksite. What is the
first step you will take when initiating the process?
Correct Answer
Determine all possible sources of electrical supply to the equipment
Question 2
NFPA 70E provides specific information to help companies prevent exposure to which
types of hazards?
Correct Answer
Electrical
Page 1 of 93
,Question 3
Which approach limit is at the point where work is the same as making contact with
the live part?
Correct Answer
Prohibited Approach Boundary
Question 1
NFPA 70E, Standard for Electrical Safety in the Workplace, consists of ? chapters;
17 informative annexes; the Foreword to NFPA 70E; and Article 90, Introduction.
Chapter 1 is divided into ? articles.
Correct Answer
3/5
Question 2
The appointment of the NFPA 70E Committee was announced on January 7, ? ,
and was formed to assist ? in preparing electrical safety standards that would
serve its requirements.
Correct Answer
1976/OSHA
Question 3
The 1995 edition of NFPA 70E included the concepts of ? and the establishment
of an arc. The 2000 edition continued to focus on establishment of flash
protection boundaries, the use of personal protective equipment, and ? to
assist the user in applying appropriate protective clothing and personal
protective equipment for common tasks.
Correct Answer
Limits of Approach/Charts
Question 4
The 2004 edition of NFPA 70E introduced the requirements of ? . The 2018
edition ? all previous editions.
Correct Answer
The energized electrical work permit / supersedes
Page 2 of 93
,Question 5
NFPA 70E Chapter 1 applies generally to electrical safety in the workplace.
Chapter 2 addresses safety-related ? requirements. Chapter 3 ? Chapter 1 with
safety requirements for special equipment.
Correct Answer
maintenance / supplements or modifies
Question 6
Explanatory material is included in the form of informational notes, which are
not enforceable as requirements. Brackets containing section references to
another NFPA document are for informational purposes only and are provided
as a guide to indicate the source of the extracted text.
Correct Answer
True
Question 7
An arc flash hazard is defined in Article 100 as a source of possible injury or
damage to health associated with the release of energy caused by an electric
arc. Informational Note No. 1 indicates that the likelihood of occurrence of an
arc flash incident increases when energized electrical conductors or circuit parts
are exposed or when they are within equipment in a(n) ? condition, provided a
person is interacting with the equipment in such a manner that could cause an
electric arc. An arc flash incident is not likely to occur under normal operating
conditions when enclosed energized equipment has been properly installed
and ?
Correct Answer
guarded or enclosed / maintained
Page 3 of 93
, Question 8
Arc rating is defined in Article 100, in part, as the value attributed to materials
that describes their performance with exposure to an electrical arc discharge
and is expressed ? . Informational Note No. 1 states, in part, that arc-rated
clothing or equipment has been tested for exposure to an electric arc and that
flame-resistant (FR) clothing without an arc rating ? been tested for exposure to
an electric arc
Correct Answer
in cal/cm2 / has not
Question 9
ATPV is defined in ASTM F1959/F1959M as the incident energy (cal/cm2) on a
material or a multilayer system of materials that results in a ? probability that
sufficient heat transfer through the tested specimen is predicted to cause the
onset of a second degree skin burn injury based on the Stoll curve. EBT is
defined in ASTM F 1959-06 as the incident energy (cal/cm2) on a material or a
material system that results in a ? probability of break open.
Correct Answer
50% / 50%
Question 10
The Informational Note to the definition of arc flash boundary states that,
according to the Stoll skin burn injury model, the onset of a second degree
burn on unprotected skin is likely to occur at an exposure of ? for one second.
Correct Answer
1.2 cal/cm2
Question 11
An approach limit at a distance from an exposed energized electrical conductor
or circuit part within which a shock hazard exists
Correct Answer
Limited Approach Boundary
Page 4 of 93
