As a general rule, an insulated equipment grounding conductor of a branch circuit shall be
identified by which color? - ANSWER Green
An emergency electrical disconnect provided for a gasoline motor. fuel dispensing pump
must be located not more than _______ from the fuel dispensing device it serves. - AN-
SWER 100 feet
A building or other structure served shall be supplied by only one service except one where
the capacity requirements are in excess of _________. - ANSWER 2000 amps at a supply
voltage of 1000 volts or less
Disregarding exceptions, the minimum size overhead service-drop conductors shall be
_______ AWG copper. - ANSWER 8 gauge
Where multiple driven ground rods are installed at a service, they shall be spaced not less
than ______ feet apart. - ANSWER 6 feet
Where a one-family dwelling has a 200 amp, 120/240 volt, single phase main service panel
and is supplied with size 2/0 gauge THW copper ungrounded line service entrance conduc-
tors in rigid metal conduit, the minimum required size of the bonding jumper for this service
entrance conduit is _____ copper. - ANSWER 4 AWG
A disconnect switch enclosure installed in a Class 2, division 2, hazardous location in an in-
dustrial establishment shall be ______. - ANSWER Dust-tight
The interior of enclosures or raceways installed underground shall be considered to be a
_____ location. - ANSWER Wet
1
, Determine the ampacity of four, size 1/0 gauge THW copper current carrying conductors in-
stalled in a common raceway with an ambient temperature of 86 degrees Fahrenheit. - AN-
SWER 120 Amps
The NEC defines a continuous load to be a load where the maximum current on the circuit is
expected to continue for at least _____ hours or more. - ANSWER Three
Determine the minimum size THW copper branch circuit conductors the NEC requires to
supply a 3 phase, continuous duty, as motor that draws 70 amps per phase. Consider all ter-
minations are rated for 75 degrees celcius. - ANSWER 3 AWG
Given: You have determined a conductor has a computed ampacity of 75 amps. What is the
maximum standard amp rating of the overcurrent protection device the NEC permits to pro-
tect this circuit here this is not a motor circuit or part of a multi-outlet branch circuit supply-
ing more than one receptical? - ANSWER 80 Amps
A 208 volt, 3 phase, 50 horsepower, squirrel cage, continuous duty, ac motor has a full load
running current rating of _____. - ANSWER 143 Amps
What is the maximum distance that a disconnect switch is permitted to be located from the
operator's station for a portable carnival ride? - ANSWER 6 feet
Determine the minimum trade size electrical metallic tubing (EMT) required to enclose
eight, 6 guage AWG copper conductors with THHW insulation, when installed in a 50 foot
conduit run. - ANSWER 1.25 inch
Where exceptions are not applicable, when a feeder supplies a continuous load of 240 amps,
the overcurrent protection device protecting this feeder circuit shall have a rating of at least
_______. - ANSWER 250 amps
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identified by which color? - ANSWER Green
An emergency electrical disconnect provided for a gasoline motor. fuel dispensing pump
must be located not more than _______ from the fuel dispensing device it serves. - AN-
SWER 100 feet
A building or other structure served shall be supplied by only one service except one where
the capacity requirements are in excess of _________. - ANSWER 2000 amps at a supply
voltage of 1000 volts or less
Disregarding exceptions, the minimum size overhead service-drop conductors shall be
_______ AWG copper. - ANSWER 8 gauge
Where multiple driven ground rods are installed at a service, they shall be spaced not less
than ______ feet apart. - ANSWER 6 feet
Where a one-family dwelling has a 200 amp, 120/240 volt, single phase main service panel
and is supplied with size 2/0 gauge THW copper ungrounded line service entrance conduc-
tors in rigid metal conduit, the minimum required size of the bonding jumper for this service
entrance conduit is _____ copper. - ANSWER 4 AWG
A disconnect switch enclosure installed in a Class 2, division 2, hazardous location in an in-
dustrial establishment shall be ______. - ANSWER Dust-tight
The interior of enclosures or raceways installed underground shall be considered to be a
_____ location. - ANSWER Wet
1
, Determine the ampacity of four, size 1/0 gauge THW copper current carrying conductors in-
stalled in a common raceway with an ambient temperature of 86 degrees Fahrenheit. - AN-
SWER 120 Amps
The NEC defines a continuous load to be a load where the maximum current on the circuit is
expected to continue for at least _____ hours or more. - ANSWER Three
Determine the minimum size THW copper branch circuit conductors the NEC requires to
supply a 3 phase, continuous duty, as motor that draws 70 amps per phase. Consider all ter-
minations are rated for 75 degrees celcius. - ANSWER 3 AWG
Given: You have determined a conductor has a computed ampacity of 75 amps. What is the
maximum standard amp rating of the overcurrent protection device the NEC permits to pro-
tect this circuit here this is not a motor circuit or part of a multi-outlet branch circuit supply-
ing more than one receptical? - ANSWER 80 Amps
A 208 volt, 3 phase, 50 horsepower, squirrel cage, continuous duty, ac motor has a full load
running current rating of _____. - ANSWER 143 Amps
What is the maximum distance that a disconnect switch is permitted to be located from the
operator's station for a portable carnival ride? - ANSWER 6 feet
Determine the minimum trade size electrical metallic tubing (EMT) required to enclose
eight, 6 guage AWG copper conductors with THHW insulation, when installed in a 50 foot
conduit run. - ANSWER 1.25 inch
Where exceptions are not applicable, when a feeder supplies a continuous load of 240 amps,
the overcurrent protection device protecting this feeder circuit shall have a rating of at least
_______. - ANSWER 250 amps
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