CORRECT ANSWERS .
Arc - Correct Answer -A luminous and potentially destructive flash or flame in or about the
wires, third rail, or
electric apparatus caused by the passage of electric current through the air
AUXILIARY WIRE - Correct Answer -A solid wire suspended from the messenger wire to
which the
contact wire is attached
CIRCUIT - Correct Answer -The complete path over which electric current is transmitted
from and
returned to its source
CIRCUIT BREAKER/INTERRUPTER - Correct Answer -A device which normally operates
automatically
under conditions of overload, short circuit, or by remote control to energize or de-
energize transmission lines, signal power lines, catenary, third rail, or primary circuits on
electric equipment so equipped
CLASS "A" - Correct Answer -Linemen, Substation Electricians, Third Rail men, and C&S
employees who
are trained and qualified to provide protection services as well as work on or about the
electrification system.
CLASS "B" - Correct Answer -Mechanical department employees trained to perform work
on top of
electric equipment in electrified territory under the conditions authorized in these
instructions, for their protection only.
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