NFPA 70E EXAM(ACTUAL EXAM) WITH
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Exposed (as applied to energized electrical conductors or circuit
parts) - ANSWERS-Capable of being inadvertently touched or
approached nearer than a safe distance by a person. It is
applied to electrical conductors or circuit parts that are not
suitably guarded , isolated, or insulated.
Guarded - ANSWERS-Covered, shielded, fenced, enclosed, or
otherwise protected by means of suitable covers, casings,
barriers, rails, screens, mats, or platforms to remove the
likelihood of approach or contact by persons or objects to a
point of danger.
,Barricade - ANSWERS-A physical obstruction such as tapes,
cones, or A-frame-type wood or metal structures intended to
provide a warning and to limit access.
Arrangement of 70E - ANSWERS-Introduction (Article 90)
Chapter 1 Safety Related Work Practices
Chapter 2 Safety Related Maintenance Requirements
Chapter 3 Safety Requirements for Special Equipment
Annexes (Article 350)
Arc Flash Hazard - ANSWERS-A dangerous condition associated
with the possible release of energy caused by an electric arc
Arc Rating - ANSWERS-The value attributed to materials that
describes their performance to exposure to an electrical arc
discharge. The arc rating is expressed in cal/cm^2 and is
derived from the determined value of the arc thermal
performance value (ATPV) or energy of breakopen threshold (E
BT) (should a material system exhibit a breakopen resoponce
,below the APTV value). Arc rating is reported as either APTV or
E bt, whichever is the lower value.
Barrier - ANSWERS-A physical obstruction that is intended to
prevent contact with equipment or energized electrical
conductors and circuit parts or to prevent unauthorized access
to a work area.
Limited approach boundary - ANSWERS-An approach limit at a
distance from an exposed energized electrical conductor or
circtuit part within which a shock hazard exists.
Restricted approach boundary - ANSWERS-An approach limit at
a distance from an exposed energized electrical conductor or
circuit part within which there is an increased likelihood of
electric shock, due to electrical arc-over combined with
, inadvertent movement, for personnel working in close
proximity to the energized electrical conductor or circuit part.
Arc Flash Boundary - ANSWERS-When an arc flash hazard exists,
an approach limit at a distance from a prospective arc source
within which a person could receive a second degree burn if an
electrical arc flash were to occur.
Electrically safe work condition - ANSWERS-A state in which an
electrical conductor or circuit part has been disconnected from
energized parts, locked/tagged in accordance with established
standards, tested to ensure the absence of voltage, and
grounded if determined necessary.
Hazard - ANSWERS-A source of possible injury or damage to
health
Incident Energy - ANSWERS-The amount of thermal energy
impressed on a surface, a certain distance from the source,
generated during an electrical arc event. Incident energy is
typically expressed in calories per square centimeter.
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