Page |1
Master Electrician's Exam Prep Guide Exam #3 Questions and
Answers with Solutions UPDATED!!!
A listed ____ shall be installed in or on all emergency systems
switchboards and panelboards.
A. Ground-fault circuit interrupter (GFCI)
B. Surge-protective device (SPD)
C. Arc-fault circuit interrupter (AFCI)
D. Leakage-current detector-interrupter (LCDI) - ANSWER B.
Surge-protective device (SPD)
pg. 607
In general, where a cablebus system is rated 95 amperes, the
MAXIMUM allowable rating of the overcurrent device that may
be used to protect the cablebus conductors is ____.
A. 80 amperes
B. 90 amperes
C. 95 amperes
D. 100 amperes - ANSWER D. 100 amperes
, Page |2
pg. 227, 98, 100
A feeder tap less than 25 feet in length is note required to have
overcurrent protection if the ampacity of the tap conductors is
NOT less than ____ of the rating of the overcurrent device
protecting the feeder conductors.
A. One-half
B. One-fourth
C. One-third
D. 75 percent - ANSWER C. One-third
pg. 101
Given: A flexible metal conduit (FMC) to be installed will contain
three (3) size 400 kcmil THWN copper conductors and one (1)
size 250 kcmil copper conductor. Where the FMC is more than
24 inches long, what MINIMUM trade size FMC is permitted for
this installation?
A. 3 inches
B. 3.5 inches
Master Electrician's Exam Prep Guide Exam #3 Questions and
Answers with Solutions UPDATED!!!
A listed ____ shall be installed in or on all emergency systems
switchboards and panelboards.
A. Ground-fault circuit interrupter (GFCI)
B. Surge-protective device (SPD)
C. Arc-fault circuit interrupter (AFCI)
D. Leakage-current detector-interrupter (LCDI) - ANSWER B.
Surge-protective device (SPD)
pg. 607
In general, where a cablebus system is rated 95 amperes, the
MAXIMUM allowable rating of the overcurrent device that may
be used to protect the cablebus conductors is ____.
A. 80 amperes
B. 90 amperes
C. 95 amperes
D. 100 amperes - ANSWER D. 100 amperes
, Page |2
pg. 227, 98, 100
A feeder tap less than 25 feet in length is note required to have
overcurrent protection if the ampacity of the tap conductors is
NOT less than ____ of the rating of the overcurrent device
protecting the feeder conductors.
A. One-half
B. One-fourth
C. One-third
D. 75 percent - ANSWER C. One-third
pg. 101
Given: A flexible metal conduit (FMC) to be installed will contain
three (3) size 400 kcmil THWN copper conductors and one (1)
size 250 kcmil copper conductor. Where the FMC is more than
24 inches long, what MINIMUM trade size FMC is permitted for
this installation?
A. 3 inches
B. 3.5 inches
