Journeyman Electrician Practice Test
Science Engineerin Electrical Engineering
g
Journeyman Electrician Practice Test
S
Conductors with _____ marked on the insulation are NOT
THHN
approved 𝑓or use in a wet location.
conductors with THHN insulation are approved 𝑓or use in dry and
damp locations only and conductors with THWN, THHW, and THW
insulation are recognized 𝑓or use in dry and wet locations.
Given: A one-𝑓amily dwelling unit with a demand load o𝑓 4/0 AWG
200 amperes is supplied with a 120/240 volt, single-
phase, electrical system 𝑓rom the local utility company. one- 𝑓amily dwelling 120/240 volt, single-phase, service-entrance
conductors to What is the MINIMUM size aluminum THW conductors be sized at an ampacity o 𝑓 not less than 83% o 𝑓 the
service rating. There𝑓ore, required 𝑓or use as service-entrance conductors 𝑓or this
200 amperes x 83% = 166 amperes; size 4/0 AWG THW aluminum conductors residence? with an allowable ampacity o 𝑓 180
amperes should be selected 𝑓or this dwelling.
Where a 150 kVA, single-phase trans𝑓ormer having a 625 amperes
secondary voltage o𝑓 120/240 is installed at a multi-
𝑓amily dwelling, the 𝑓ull-load current rating, in amperes, To 𝑓ind the 𝑓ull-load current rating o 𝑓 the single-phase trans 𝑓ormer
apply the o𝑓 the secondary is _____. single-phase current 𝑓ormula as shown:I = (150 kVA x 1000) / 240 volts = 15,000/240
= 625 amperes
Which one o𝑓 the 𝑓ollowing listed circuit breakers is 75 amperes
NOT a standard ampere rating?
the standard ampere ratings 𝑓or 𝑓uses and circuit breakers. A
circuit breaker with an ampere rating o𝑓 75 amperes is not a
standard ampere rating.
The MINIMUM length o𝑓 𝑓ree conductor to be le𝑓t at 6 inches
each junction box 𝑓or the purpose o𝑓 splicing
conductors, or making connections to illuminares or 𝑓ree conductor is to be le 𝑓t at each junction box 𝑓or splices or the
connection devices shall be _____ . o𝑓 luminaires or devices. The intent o 𝑓 this rule is to ensure enough conductor slack 𝑓or
the terminal connections or splices to be made easily.
1/7
, 4/30/26, 1:31 PM Journeyman Electrician Practice Test
In general, overhead service-drop conductors shall 8 AWG copper
NOT be smaller than _____.
overhead service-drop conductors to be not smaller than 8 AWG copper
or 6 AWG aluminum or copper-clad aluminum. Do not get service-drop
conductors, the overhead conductors between the utility electric supply
system and the service point, con𝑓used with the service-entrance
conductors, the conductors 𝑓rom the service point 𝑓rom the utility
company to the service disconnecting means.
When a galvanized eye-bolt is to be used as the point 10 𝑓t.
o𝑓 attachment 𝑓or an electrical service, the NEC
requires the eye-bolt to be installed NOT less than _____ provide adequate vertical clearance o 𝑓 the conductors and prevent
physical above 𝑓inished grade. damage to the conductors and prevent persons 𝑓rom making accidental contact with the
conductors which may create a shock hazard or electrocution.
In no case shall the point o𝑓 attachment o𝑓 the service-drop
conductors to be less than 10 𝑓t. above 𝑓inished grade.
Why is electrical continuity required 𝑓or metallic To establish an e𝑓𝑓ective ground- 𝑓ault path and 𝑓acilitate the operation o 𝑓
the conduit? over-current protective device.
Electrical continuity is required 𝑓or metallic conduit to establish an
e𝑓𝑓ective ground-𝑓ault path and 𝑓acilitate the operation o𝑓 the
overcurrent protective device.
In dwelling units, receptacle outlets installed 𝑓or 20 inches
countertop sur𝑓aces, must be located above, but NOT
more than _____ above the countertop or work sur𝑓ace. receptacle outlets installed 𝑓or countertop or work sur 𝑓aces in
dwelling units may be located on or above, but not more than 20 in. above the countertop or work sur 𝑓ace. The intent o 𝑓 this
rule is to eliminate the use o𝑓 unsightly extension cords (which reduces the amount o 𝑓 usable countertop space) on the
countertop or work sur𝑓ace to supply cord-and-plug connected appliances.
Also, receptacles located more than 20 inches above countertops or
work sur𝑓aces may inter𝑓ere with the cabinetry to be installed.
When conductors are installed in a conduit or tubing 24 inches
nipple o𝑓 _____ or less in length, the ampacity adjustment
𝑓actors 𝑓or more than three (3) current-carrying adjustment 𝑓actors 𝑓or more than three (3) current-carrying conductors in
conductors in the raceway, are not required to be raceways shall not apply where the raceway is not more than 24 inches in
applied.
length. Where more than 3 current-carrying conductors are installed in short lengths o 𝑓 conduit or tubing, the heating e 𝑓𝑓ect
caused 𝑓rom the additional conductors is insigni𝑓icant there𝑓ore, the allowable ampacity o 𝑓 the conductors is not greatly
reduced.
In compliance with the NEC, the total marked rating o 𝑓 50%
a 120-volt, cord-and-plug-connected room air
conditioner shall not exceed _____ o𝑓 the rating o𝑓 a the special provisions 𝑓or room air conditioners which are (1) rated not
over branch circuit when lighting units, general-use 250-volts ac, single-phase and (2) which are cord-and-attachment plug
receptacles, or other appliances are supplied 𝑓rom the
connected. In order to prevent overloading the branch circuit, as per Section branch circuit. 40.62(C), the total rating o 𝑓 the
A/C unit shall not exceed 50% o𝑓 the rating o𝑓 a branch circuit where lighting units, general-use receptacles or appliances are
also supplied.
https://quizlet.com/522564245/journeyman-electrician-practice-test-𝑓lash-cards/?𝑓unnelUUID=ac3b3d21-29𝑓2-46a1-8c6e-4974ed340c48 2/7
Science Engineerin Electrical Engineering
g
Journeyman Electrician Practice Test
S
Conductors with _____ marked on the insulation are NOT
THHN
approved 𝑓or use in a wet location.
conductors with THHN insulation are approved 𝑓or use in dry and
damp locations only and conductors with THWN, THHW, and THW
insulation are recognized 𝑓or use in dry and wet locations.
Given: A one-𝑓amily dwelling unit with a demand load o𝑓 4/0 AWG
200 amperes is supplied with a 120/240 volt, single-
phase, electrical system 𝑓rom the local utility company. one- 𝑓amily dwelling 120/240 volt, single-phase, service-entrance
conductors to What is the MINIMUM size aluminum THW conductors be sized at an ampacity o 𝑓 not less than 83% o 𝑓 the
service rating. There𝑓ore, required 𝑓or use as service-entrance conductors 𝑓or this
200 amperes x 83% = 166 amperes; size 4/0 AWG THW aluminum conductors residence? with an allowable ampacity o 𝑓 180
amperes should be selected 𝑓or this dwelling.
Where a 150 kVA, single-phase trans𝑓ormer having a 625 amperes
secondary voltage o𝑓 120/240 is installed at a multi-
𝑓amily dwelling, the 𝑓ull-load current rating, in amperes, To 𝑓ind the 𝑓ull-load current rating o 𝑓 the single-phase trans 𝑓ormer
apply the o𝑓 the secondary is _____. single-phase current 𝑓ormula as shown:I = (150 kVA x 1000) / 240 volts = 15,000/240
= 625 amperes
Which one o𝑓 the 𝑓ollowing listed circuit breakers is 75 amperes
NOT a standard ampere rating?
the standard ampere ratings 𝑓or 𝑓uses and circuit breakers. A
circuit breaker with an ampere rating o𝑓 75 amperes is not a
standard ampere rating.
The MINIMUM length o𝑓 𝑓ree conductor to be le𝑓t at 6 inches
each junction box 𝑓or the purpose o𝑓 splicing
conductors, or making connections to illuminares or 𝑓ree conductor is to be le 𝑓t at each junction box 𝑓or splices or the
connection devices shall be _____ . o𝑓 luminaires or devices. The intent o 𝑓 this rule is to ensure enough conductor slack 𝑓or
the terminal connections or splices to be made easily.
1/7
, 4/30/26, 1:31 PM Journeyman Electrician Practice Test
In general, overhead service-drop conductors shall 8 AWG copper
NOT be smaller than _____.
overhead service-drop conductors to be not smaller than 8 AWG copper
or 6 AWG aluminum or copper-clad aluminum. Do not get service-drop
conductors, the overhead conductors between the utility electric supply
system and the service point, con𝑓used with the service-entrance
conductors, the conductors 𝑓rom the service point 𝑓rom the utility
company to the service disconnecting means.
When a galvanized eye-bolt is to be used as the point 10 𝑓t.
o𝑓 attachment 𝑓or an electrical service, the NEC
requires the eye-bolt to be installed NOT less than _____ provide adequate vertical clearance o 𝑓 the conductors and prevent
physical above 𝑓inished grade. damage to the conductors and prevent persons 𝑓rom making accidental contact with the
conductors which may create a shock hazard or electrocution.
In no case shall the point o𝑓 attachment o𝑓 the service-drop
conductors to be less than 10 𝑓t. above 𝑓inished grade.
Why is electrical continuity required 𝑓or metallic To establish an e𝑓𝑓ective ground- 𝑓ault path and 𝑓acilitate the operation o 𝑓
the conduit? over-current protective device.
Electrical continuity is required 𝑓or metallic conduit to establish an
e𝑓𝑓ective ground-𝑓ault path and 𝑓acilitate the operation o𝑓 the
overcurrent protective device.
In dwelling units, receptacle outlets installed 𝑓or 20 inches
countertop sur𝑓aces, must be located above, but NOT
more than _____ above the countertop or work sur𝑓ace. receptacle outlets installed 𝑓or countertop or work sur 𝑓aces in
dwelling units may be located on or above, but not more than 20 in. above the countertop or work sur 𝑓ace. The intent o 𝑓 this
rule is to eliminate the use o𝑓 unsightly extension cords (which reduces the amount o 𝑓 usable countertop space) on the
countertop or work sur𝑓ace to supply cord-and-plug connected appliances.
Also, receptacles located more than 20 inches above countertops or
work sur𝑓aces may inter𝑓ere with the cabinetry to be installed.
When conductors are installed in a conduit or tubing 24 inches
nipple o𝑓 _____ or less in length, the ampacity adjustment
𝑓actors 𝑓or more than three (3) current-carrying adjustment 𝑓actors 𝑓or more than three (3) current-carrying conductors in
conductors in the raceway, are not required to be raceways shall not apply where the raceway is not more than 24 inches in
applied.
length. Where more than 3 current-carrying conductors are installed in short lengths o 𝑓 conduit or tubing, the heating e 𝑓𝑓ect
caused 𝑓rom the additional conductors is insigni𝑓icant there𝑓ore, the allowable ampacity o 𝑓 the conductors is not greatly
reduced.
In compliance with the NEC, the total marked rating o 𝑓 50%
a 120-volt, cord-and-plug-connected room air
conditioner shall not exceed _____ o𝑓 the rating o𝑓 a the special provisions 𝑓or room air conditioners which are (1) rated not
over branch circuit when lighting units, general-use 250-volts ac, single-phase and (2) which are cord-and-attachment plug
receptacles, or other appliances are supplied 𝑓rom the
connected. In order to prevent overloading the branch circuit, as per Section branch circuit. 40.62(C), the total rating o 𝑓 the
A/C unit shall not exceed 50% o𝑓 the rating o𝑓 a branch circuit where lighting units, general-use receptacles or appliances are
also supplied.
https://quizlet.com/522564245/journeyman-electrician-practice-test-𝑓lash-cards/?𝑓unnelUUID=ac3b3d21-29𝑓2-46a1-8c6e-4974ed340c48 2/7
