Journeyman Study Guide
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What's the most important overcurrent safety for a department circuit that resources a non
motor operated usage equipment in an occupancy? The usage system of 20 amps.
1. 20 amperes
2. 30 amperes
3 .Forty amperes
4. 50 amperes - ANS-1. 20 amperes
A #12 THHW copper wire at an ambient temperature of one hundred ten degrees F will have
a largest fuse (overcurrent) safety of how many amps?
1. 15 amps
2. 20 amps
three. 25 amps
four. 30 amps - ANS-2. 20 amps
A 10-hp, 3-phase squirrel cage motor will draw what number of amperes at 208 volts?
1. 28.Zero
2. 30.8
three. 32.2
four. 33.4 - ANS-2. 30.Eight
A one hundred kVA dry type transformer with a 4,160 volt number one is installation indoors
in a place where combustible substances are saved. The transformer MUST be separated
from flamable fabric with the aid of a smallest of
1. 6 in
2. 12 in
three. 18 in
four. 24 in - ANS-2. 12 in
A 2 inch conduit enters the east aspect of a pool field and exits at the west facet of the
identical field. The smallest space from the east wall the west wall of the pool box is how
many inches
1. 6 inches
2. 8inches
three. 12 inches
four. Sixteen inches - ANS-four. 16 inches
,A 200-foot vertical conduit has 3 2/0 copper feeders. The wires MUST be supported at the
largest intervals of
1. 100 ft
2. 80 toes
3. 60 toes
4. Forty toes - ANS-2. 80 ft
A 24-volt machine desires a smallest running depth of
1. 2 feet
2. Three ft
3. 4 toes
four. 5 feet - ANS-2. 3 toes
A 240-volt transformer with a number one present day of thirteen amperes can have a
number one overcurrent protections handiest of a biggest of
1. Thirteen amperes
2. 15 amperes
3. 20 amperes
4. 30 amperes - ANS-3. 20 amperes
A three segment 208 volt circuit using #6 THWN copper wire that components a 25 ampere
load is positioned 200ft from the distribution panel, what is the voltage drop of the deliver
twine?
1. 2.33 volts
2. Four.42 volts
3. 6.60 volts
four. 8.Fifty four volts - ANS-2. 4.Forty two volts
A 3 phase motor controller is also the disconnect it is REQUIRED to open
1. All three levels
2. Only the "A" segment
three. Only the"B" and "C"levels
4. The neutral - ANS-1. All three levels
A 3-phase, 480-volt delta machine is balanced with a 30-kVA load in step with phase. What
is the line current, given an real 80,000-VA overall load?
1. Sixty two.50 amperes
2. 96.22 amperes
three. 108.25 amperes
4. 166.Sixty six amperes - ANS-2. Ninety six.22 amperes
,A four-inch rigid mgetal conduit that is to enclose Type THW wires, could have a bending
radius of NOT beneath what number of in?
1. 12
2. 18
three. 24
four. 30 - ANS-3. 24
A 480/277 volt feeder futillized at 400 amps is administered from constructing 1 of building 2.
The branch circuits originate within the 2nd building and serve in most cases motor masses
in that constructing. What's the smallest length copper grounding wire allowed to be run in
the second constructing?
1. #6 AWG
2. #three AWG
three. #2 AWG
four. #1/zero AWG - ANS-2. #three AWG
A 480/277 volt feeder applied at 400 amperes is run from Building 1 to Building 2. The
circuits originate inside the 2nd constructing and serve MOSTLY motor hundreds in that
constructing, the smallest length copper grounded twine allowed to be run to the second
building?
1. #8 AWG
2. #three AWG
3. #2 AWG
four. #1/0 AWG - ANS-2. #3 AWG
A 500 KCMIL copper 480/277 volt carrier is grounded to a steel pipe in direct contact with
the earth for above 10 ft structural steel and a concrete encased electrode. Exposed interior
structural metal turned into determined that turned into now not deliberately grounded and
will emerge as energized. To bond this indoors structural steel to the grounding electrode
device, what's the smallest length copper twine allowed?
1. #6 AWG
2. #three AWG
3. #2 AWG
4. #1/0 AWG - ANS-4. #1/0 AWG
A 60 hp motor is set up in a Class 1 Zone 2 atmosphere. The approved boding approach is
1. Motor to ground
2. Rigid conduit to motor must be grounded
three. The armature mast be bonded
four. All motor sections have to be bonded and run to ground - ANS-1. Motor to ground
, A 60 volt, 20 amp transformer can have an person overcurrent tool at the number one side
rated at a biggest of how many amps? No overcurrent safety in applied at the secondary
aspect of the transformer.
1. 20 amps
2. 25 amps
3. 30 amps
four. 35amps - ANS-2. 25 amps
A six hundred-ampere busway utilized at six hundred amperes is set up in an industrial area.
A two hundred- ampere busway, NOT in touch with flamable substances is tapped into it.
What's the largest area the busway can run without presenting overcurrent safety for the two
hundred-ampere busway?
1. 10 ft
2. 25 feet
3. 35 toes
4. 50 feet - ANS-4. 50 feet
A bedroom in a residential will have a fifteen amp or 20 amp receptacle set up in every wall
area
1. 2 foot or extra in width
2. Three foot or greater in width
3. 4 foot or more in width
four. 6 foot or greater in width - ANS-1. 2 foot or more in width
A bonding jumper between an antenna gadget and the grounding electrode for a CATV
gadget need to be a smallest of
1. 12 AWG
2. 10 AWG
3. 8 AWG
four. 6 AWG - ANS-four. 6 AWG
A branch circuit that offers a fifteen-amp, 125-volt circuit to a residential bedroom will be
blanketed through
1. A 15-amp circuit breaker
2. A 20 amp circuit breaker
3. GFCI protection
4. Arc fault safety - ANS-4. Arc fault protection
A cable TV set upation in a cellular home that has strength supplied via twine and plug need
to be bonded to the mobile home
1. Frame
2. Service
•
What's the most important overcurrent safety for a department circuit that resources a non
motor operated usage equipment in an occupancy? The usage system of 20 amps.
1. 20 amperes
2. 30 amperes
3 .Forty amperes
4. 50 amperes - ANS-1. 20 amperes
A #12 THHW copper wire at an ambient temperature of one hundred ten degrees F will have
a largest fuse (overcurrent) safety of how many amps?
1. 15 amps
2. 20 amps
three. 25 amps
four. 30 amps - ANS-2. 20 amps
A 10-hp, 3-phase squirrel cage motor will draw what number of amperes at 208 volts?
1. 28.Zero
2. 30.8
three. 32.2
four. 33.4 - ANS-2. 30.Eight
A one hundred kVA dry type transformer with a 4,160 volt number one is installation indoors
in a place where combustible substances are saved. The transformer MUST be separated
from flamable fabric with the aid of a smallest of
1. 6 in
2. 12 in
three. 18 in
four. 24 in - ANS-2. 12 in
A 2 inch conduit enters the east aspect of a pool field and exits at the west facet of the
identical field. The smallest space from the east wall the west wall of the pool box is how
many inches
1. 6 inches
2. 8inches
three. 12 inches
four. Sixteen inches - ANS-four. 16 inches
,A 200-foot vertical conduit has 3 2/0 copper feeders. The wires MUST be supported at the
largest intervals of
1. 100 ft
2. 80 toes
3. 60 toes
4. Forty toes - ANS-2. 80 ft
A 24-volt machine desires a smallest running depth of
1. 2 feet
2. Three ft
3. 4 toes
four. 5 feet - ANS-2. 3 toes
A 240-volt transformer with a number one present day of thirteen amperes can have a
number one overcurrent protections handiest of a biggest of
1. Thirteen amperes
2. 15 amperes
3. 20 amperes
4. 30 amperes - ANS-3. 20 amperes
A three segment 208 volt circuit using #6 THWN copper wire that components a 25 ampere
load is positioned 200ft from the distribution panel, what is the voltage drop of the deliver
twine?
1. 2.33 volts
2. Four.42 volts
3. 6.60 volts
four. 8.Fifty four volts - ANS-2. 4.Forty two volts
A 3 phase motor controller is also the disconnect it is REQUIRED to open
1. All three levels
2. Only the "A" segment
three. Only the"B" and "C"levels
4. The neutral - ANS-1. All three levels
A 3-phase, 480-volt delta machine is balanced with a 30-kVA load in step with phase. What
is the line current, given an real 80,000-VA overall load?
1. Sixty two.50 amperes
2. 96.22 amperes
three. 108.25 amperes
4. 166.Sixty six amperes - ANS-2. Ninety six.22 amperes
,A four-inch rigid mgetal conduit that is to enclose Type THW wires, could have a bending
radius of NOT beneath what number of in?
1. 12
2. 18
three. 24
four. 30 - ANS-3. 24
A 480/277 volt feeder futillized at 400 amps is administered from constructing 1 of building 2.
The branch circuits originate within the 2nd building and serve in most cases motor masses
in that constructing. What's the smallest length copper grounding wire allowed to be run in
the second constructing?
1. #6 AWG
2. #three AWG
three. #2 AWG
four. #1/zero AWG - ANS-2. #three AWG
A 480/277 volt feeder applied at 400 amperes is run from Building 1 to Building 2. The
circuits originate inside the 2nd constructing and serve MOSTLY motor hundreds in that
constructing, the smallest length copper grounded twine allowed to be run to the second
building?
1. #8 AWG
2. #three AWG
3. #2 AWG
four. #1/0 AWG - ANS-2. #3 AWG
A 500 KCMIL copper 480/277 volt carrier is grounded to a steel pipe in direct contact with
the earth for above 10 ft structural steel and a concrete encased electrode. Exposed interior
structural metal turned into determined that turned into now not deliberately grounded and
will emerge as energized. To bond this indoors structural steel to the grounding electrode
device, what's the smallest length copper twine allowed?
1. #6 AWG
2. #three AWG
3. #2 AWG
4. #1/0 AWG - ANS-4. #1/0 AWG
A 60 hp motor is set up in a Class 1 Zone 2 atmosphere. The approved boding approach is
1. Motor to ground
2. Rigid conduit to motor must be grounded
three. The armature mast be bonded
four. All motor sections have to be bonded and run to ground - ANS-1. Motor to ground
, A 60 volt, 20 amp transformer can have an person overcurrent tool at the number one side
rated at a biggest of how many amps? No overcurrent safety in applied at the secondary
aspect of the transformer.
1. 20 amps
2. 25 amps
3. 30 amps
four. 35amps - ANS-2. 25 amps
A six hundred-ampere busway utilized at six hundred amperes is set up in an industrial area.
A two hundred- ampere busway, NOT in touch with flamable substances is tapped into it.
What's the largest area the busway can run without presenting overcurrent safety for the two
hundred-ampere busway?
1. 10 ft
2. 25 feet
3. 35 toes
4. 50 feet - ANS-4. 50 feet
A bedroom in a residential will have a fifteen amp or 20 amp receptacle set up in every wall
area
1. 2 foot or extra in width
2. Three foot or greater in width
3. 4 foot or more in width
four. 6 foot or greater in width - ANS-1. 2 foot or more in width
A bonding jumper between an antenna gadget and the grounding electrode for a CATV
gadget need to be a smallest of
1. 12 AWG
2. 10 AWG
3. 8 AWG
four. 6 AWG - ANS-four. 6 AWG
A branch circuit that offers a fifteen-amp, 125-volt circuit to a residential bedroom will be
blanketed through
1. A 15-amp circuit breaker
2. A 20 amp circuit breaker
3. GFCI protection
4. Arc fault safety - ANS-4. Arc fault protection
A cable TV set upation in a cellular home that has strength supplied via twine and plug need
to be bonded to the mobile home
1. Frame
2. Service
