Journeyman Ele Exam Prep
2025 latest updated version
with expert solutions
1. What must be the middle conductor in a single - phase ,
three - wire electrical system :
a . Ungrounded
b Grounded
c . Hot
d . Out - of - phase . - answer B
2. Three - wire , single phase electrical systems require
120 volts between the ungrounded conductor and the
neutral . Which voltage must exist between the two
ungrounded conductors ?
a. 120 volts
b . 240 volts
c . 288 volts
d 600 volts - answer B
3. When there are three wires in a single - phase 3 - wire
electrical system , the hot conductors are known as :
a . Neutral conductors
b Grounded conductors
c . Nominal conductors
d . Ungrounded conductors - answer D
, 4. The local utility company supplies a 120/240 volt single
phase electrical system to a one - family dwelling with a
demand load of 200 amps To be used as service entrance
conductors for this residence , what minimum aluminum
THW conductor is required ?
a . 1/0 AWG
b . 4/0 AWG
c . 3/0 AWG
d . 2/0 AWG - answer B
5. If a single - phase 120/240 volt electrical system has
three wires , what is the current flowing through the
neutral ?
a . In the case two ungrounded conductors , the difference
in current is
b . Conductors that are ungrounded add up to have a sum
of current
c . The current of the first ungrounded conductor divided
by the current of the second ungrounded conductor
d . 240 volts divided by 120 volts - answer A
6. Which two separate electrical systems must be part of a
hospital's essential electrical system ?
a . A standard system and a life safety system
b . An essential system and a non essential system
c . A life safety system and an addressable fire alarm
system
2025 latest updated version
with expert solutions
1. What must be the middle conductor in a single - phase ,
three - wire electrical system :
a . Ungrounded
b Grounded
c . Hot
d . Out - of - phase . - answer B
2. Three - wire , single phase electrical systems require
120 volts between the ungrounded conductor and the
neutral . Which voltage must exist between the two
ungrounded conductors ?
a. 120 volts
b . 240 volts
c . 288 volts
d 600 volts - answer B
3. When there are three wires in a single - phase 3 - wire
electrical system , the hot conductors are known as :
a . Neutral conductors
b Grounded conductors
c . Nominal conductors
d . Ungrounded conductors - answer D
, 4. The local utility company supplies a 120/240 volt single
phase electrical system to a one - family dwelling with a
demand load of 200 amps To be used as service entrance
conductors for this residence , what minimum aluminum
THW conductor is required ?
a . 1/0 AWG
b . 4/0 AWG
c . 3/0 AWG
d . 2/0 AWG - answer B
5. If a single - phase 120/240 volt electrical system has
three wires , what is the current flowing through the
neutral ?
a . In the case two ungrounded conductors , the difference
in current is
b . Conductors that are ungrounded add up to have a sum
of current
c . The current of the first ungrounded conductor divided
by the current of the second ungrounded conductor
d . 240 volts divided by 120 volts - answer A
6. Which two separate electrical systems must be part of a
hospital's essential electrical system ?
a . A standard system and a life safety system
b . An essential system and a non essential system
c . A life safety system and an addressable fire alarm
system
