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JOURNEYMAN NEC 2023

Journeyman Electrician Practice Test 36

Free Online Journeyman Electrician Exam Practice Test — 36This free 30-question practice test covers journeyman electrician exam topics based on the 2023 NEC, including emergency battery systems (NEC 700), panelboard installation requirements, low-voltage lighting systems, motor efficiency calculations, service drop clearances, lighting track conductors, conductor derating, receptacle load calculations, equipment interrupting ratings, service disconnects, equipment grounding conductor sizing, conduit burial depths, and power factor correction.

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Yes — completely free with no account required. All questions include detailed explanations and NEC references.

Most state Journeyman exams have 80–100 questions covering NEC code, wiring methods, branch circuits, motor controls, and load calculations.

Most states require a 70–75% passing score. This practice test uses the same 70% pass threshold so you know where you stand.

Questions are written to the 2023 NEC. Check your state licensing board to confirm which edition your state has adopted.

Key rules to review: Emergency batteries must hold at least 87.5% of voltage for 1.5 hours (NEC 700.12(A)). Every panelboard must be mounted in a cabinet (NEC 408.4(A)). Low-voltage lighting operates at 30V or less (NEC 411.2). Service drops over truck traffic areas must clear 18 feet (NEC 230.24(B)(1)). No derating for 3 or fewer current-carrying conductors in conduit (NEC 310.15(C)(1)). Lighting track branch circuits are limited to 20A, so minimum wire = #12 AWG (NEC 410.151(C)(1)). Receptacle load = 180 VA each for calculations (NEC 220.14(I)).

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Journeyman Electrician Practice Test 36 — Question List

Question 1: What is the minimum percentage rated voltage that a storage battery should supply the emergency load?

80 %
85 %
82.5 %
87.5 %

NEC Reference: NEC 700.12(A)

Question 2: Panel boards are not intended to install in a cabinet.

False
True

NEC Reference: NEC 408.4(A)

Question 3: What is the maximum operating RMS voltage of a low voltage lighting system?

30 volts
25 volts
40 volts
35 volts

NEC Reference: NEC 411.2

Question 4: What is overall efficiency of a 4 hp motor that draws 15 amperes at 240 volts?

90 %
83 %
75 %
81 %

Question 5: What is the minimum clearance of service drops over public streets, roads parking areas subject to truck traffic?

18 ft
15 ft
10 ft
12 ft

NEC Reference: NEC 230.24

Question 6: Which of the following instrument is used to measure the current flow in the circuit?

Ammeter
Voltmeter
Ohm meter
Watt Meter

Question 7: What is the minimum size of lighting track conductors?

12 AWG
14 AWG
16 AWG
10 AWG

NEC Reference: NEC 410.151(C)(1)

Question 8: Without applying any de-rating factor for conductor current carrying capacity, how many conductors can run parallel in raceway or cable?

NEC Reference: NEC 310.15(C)(1)

Question 9: Which of the following is the measurement unit of circuit resistance?

ohm
mho
farad
henry

Question 10: Which of the following is the maximum number of receptacles that can be on a 20 ampere branch circuit operated at 120 volts?

NEC Reference: NEC 220.14(I)

Question 11: Per NEC 110.9, equipment intended to interrupt current at fault levels shall have an interrupting rating _____ for the available fault current at its line terminals.

Less than the available fault current
Sufficient for the available fault current
Equal to the circuit breaker ampere rating only
At least 200% of the circuit's rated current

NEC Reference: NEC 110.9

Question 12: Per NEC 230.70(A)(1), the service disconnecting means shall be installed at a readily accessible location either outside the building OR inside the building nearest the _____ .

Meter socket location
Point of entrance of the service conductors
Geographic center of the building
Main electrical room on the top floor

NEC Reference: NEC 230.70(A)(1)

Question 13: Per NEC Table 250.122, the minimum copper equipment grounding conductor (EGC) for a circuit protected by a 60-ampere overcurrent device is _____ .

No. 14 AWG copper
No. 12 AWG copper
No. 10 AWG copper
No. 8 AWG copper

NEC Reference: NEC 250.122(A)

Question 14: Per NEC Table 300.5, the minimum burial depth (minimum cover) for rigid metal conduit (RMC) under a residential driveway is _____ inches.

6 inches
12 inches
18 inches
24 inches

NEC Reference: NEC 300.5

Question 15: Per NEC 314.16(B)(2), when calculating box fill, one or more internal cable clamps inside the box shall count as a volume allowance equal to _____ .

One conductor equivalent for each individual clamp
One conductor equivalent of the largest conductor in the box, for all clamps combined
Two conductor equivalents regardless of wire size
Nothing — internal clamps are not counted in box fill

NEC Reference: NEC 314.16(B)(2)

Question 16: Per NEC 408.36, each panelboard shall be protected by an overcurrent protective device (OCPD) with a rating that does not exceed _____ .

The total connected load
The ampere rating of the panelboard
150% of the calculated load
The utility service entrance rating

NEC Reference: NEC 408.36

Question 17: Per NEC 440.12(A)(1), the disconnecting means for air conditioning or refrigeration equipment shall be rated at not less than _____ percent of the nameplate rated-load current of the motor-compressor.

100%
115%
125%
175%

NEC Reference: NEC 440.12(A)(1)

Question 18: Per NEC 430.7(A), which of the following information is required to appear on a motor nameplate?

Color of the motor housing
Rated horsepower, rated voltage, and rated full-load amperes
The serial number of the motor only
The motor's purchase price and date of manufacture

NEC Reference: NEC 430.7(A)

Question 19: A branch circuit supplies a single continuous load of 16 amperes. Per NEC 210.19(A)(1), the minimum conductor ampacity required for this branch circuit is _____ .

16 amperes (same as the load)
20 amperes (125% of 16 A)
32 amperes (200% of 16 A)
25 amperes (next standard size up)

NEC Reference: NEC 210.19(A)(1)

Question 20: In an AC circuit containing an inductor (such as a motor or transformer coil), the inductive reactance (XL) will _____ if the frequency of the supply voltage is increased.

Decrease
Increase
Stay the same
Drop to zero

Question 21: Per NEC 210.52(G), a one-family dwelling has a three-car attached garage (three separate vehicle bays). What is the minimum number of receptacle outlets required inside the garage to meet code?

1 receptacle (one for the whole garage)
2 receptacles
3 receptacles (one per vehicle bay)
No receptacles are required in garages

NEC Reference: NEC 210.52(G)

Question 22: Per NEC 110.14(A), a terminal on a receptacle or device that is marked "CU" (or not marked at all) may only be connected to _____ conductors.

Aluminum conductors only
Copper conductors only
Either copper or aluminum
Copper-clad aluminum only

NEC Reference: NEC 110.14(A)

Question 23: Per NEC 210.8(B)(1), in other than dwelling units (such as office buildings, restaurants, and retail stores), GFCI protection is required for all 125-volt through 250-volt receptacles installed in _____ .

All receptacles throughout the building
Bathrooms
Only in laundry rooms
Outlets within 6 feet of a water heater

NEC Reference: NEC 210.8(B)(1)

Question 24: Per NEC Article 725, which of the following is a common example of a Class 2 remote control and signaling circuit?

A 240-volt electric dryer circuit
Thermostat wiring for a residential heating/cooling system
A 20-ampere kitchen small appliance circuit
The service entrance feeder conductors

NEC Reference: NEC 725.2

Question 25: Per NEC 430.103, the disconnecting means for a motor shall be located _____ .

In the main service panel only
In sight from the motor location and from the controller location
At least 50 feet from the motor for safety
At the utility meter only

NEC Reference: NEC 430.103

Question 26: Per NEC 352.30(A), PVC conduit (rigid nonmetallic conduit) shall be secured within _____ of each outlet box, junction box, device box, conduit body, or other conduit termination.

1 foot
2 feet
3 feet
5 feet

NEC Reference: NEC 352.30(A)

Question 27: An industrial facility has a system power factor of 0.70 lagging due to a large number of electric motors. To correct this power factor toward unity (1.0), the facility should install _____ .

Additional inductors (choke coils)
Capacitor banks
More electric motors
Larger transformers

Question 28: Per NEC 110.26(D), illumination shall be provided for all working spaces around _____ installed indoors.

All receptacle outlets in the building
Service equipment, switchboards, panelboards, and motor control centers
Outdoor lighting fixtures only
Kitchen countertop areas

NEC Reference: NEC 110.26(D)

Question 29: Per NEC 410.16(C), which type of luminaire (light fixture) is NOT permitted in a clothes closet?

Surface-mounted LED fixture with enclosed lamp
Pendant (hanging) luminaire
Recessed fluorescent luminaire
Surface-mounted fluorescent luminaire

NEC Reference: NEC 410.16(C)

Question 30: Per NEC 210.52(C)(1), for kitchen countertop spaces in a dwelling unit, receptacle outlets shall be installed so that no point along the wall line of the countertop is more than _____ from a receptacle outlet in that space.

12 inches (1 foot)
24 inches (2 feet)
36 inches (3 feet)
48 inches (4 feet)

NEC Reference: NEC 210.52(C)(1)

Key NEC References for This Test

Article	What It Covers
Art. 100	Definitions — know: feeder, branch circuit, OCPD, dwelling unit
Art. 210	Branch Circuits — GFCI/AFCI locations, circuit ratings, outlet spacing (most tested)
Art. 220	Load Calculations — dwelling unit standard method
Art. 250	Grounding & Bonding — GEC sizing, electrode system, EGC
Art. 310	Conductors — ampacity (Table 310.12), insulation, derate rules
Art. 430	Motors — conductor 125% FLA, OCPD 250% FLA, overloads, disconnects

Study Tip: Tab Articles 210, 250, and 430 in your NEC before the exam. Know the Table 310.12 ampacity values for 14, 12, 10, 8, 6, and 4 AWG copper.

Journeyman Electrician Practice Test 36

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Journeyman Electrician Practice Test 36

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Journeyman Electrician Practice Test 36 — Question List

Question 1: What is the minimum percentage rated voltage that a storage battery should supply the emergency load?

Question 2: Panel boards are not intended to install in a cabinet.

Question 3: What is the maximum operating RMS voltage of a low voltage lighting system?

Question 4: What is overall efficiency of a 4 hp motor that draws 15 amperes at 240 volts?

Question 5: What is the minimum clearance of service drops over public streets, roads parking areas subject to truck traffic?

Question 6: Which of the following instrument is used to measure the current flow in the circuit?

Question 7: What is the minimum size of lighting track conductors?

Question 8: Without applying any de-rating factor for conductor current carrying capacity, how many conductors can run parallel in raceway or cable?

Question 9: Which of the following is the measurement unit of circuit resistance?

Question 10: Which of the following is the maximum number of receptacles that can be on a 20 ampere branch circuit operated at 120 volts?

Question 11: Per NEC 110.9, equipment intended to interrupt current at fault levels shall have an interrupting rating _____ for the available fault current at its line terminals.

Question 12: Per NEC 230.70(A)(1), the service disconnecting means shall be installed at a readily accessible location either outside the building OR inside the building nearest the _____ .

Question 13: Per NEC Table 250.122, the minimum copper equipment grounding conductor (EGC) for a circuit protected by a 60-ampere overcurrent device is _____ .

Question 14: Per NEC Table 300.5, the minimum burial depth (minimum cover) for rigid metal conduit (RMC) under a residential driveway is _____ inches.

Question 15: Per NEC 314.16(B)(2), when calculating box fill, one or more internal cable clamps inside the box shall count as a volume allowance equal to _____ .

Question 16: Per NEC 408.36, each panelboard shall be protected by an overcurrent protective device (OCPD) with a rating that does not exceed _____ .

Question 17: Per NEC 440.12(A)(1), the disconnecting means for air conditioning or refrigeration equipment shall be rated at not less than _____ percent of the nameplate rated-load current of the motor-compressor.

Question 18: Per NEC 430.7(A), which of the following information is required to appear on a motor nameplate?

Question 19: A branch circuit supplies a single continuous load of 16 amperes. Per NEC 210.19(A)(1), the minimum conductor ampacity required for this branch circuit is _____ .

Question 20: In an AC circuit containing an inductor (such as a motor or transformer coil), the inductive reactance (XL) will _____ if the frequency of the supply voltage is increased.

Question 21: Per NEC 210.52(G), a one-family dwelling has a three-car attached garage (three separate vehicle bays). What is the minimum number of receptacle outlets required inside the garage to meet code?

Question 22: Per NEC 110.14(A), a terminal on a receptacle or device that is marked "CU" (or not marked at all) may only be connected to _____ conductors.

Question 23: Per NEC 210.8(B)(1), in other than dwelling units (such as office buildings, restaurants, and retail stores), GFCI protection is required for all 125-volt through 250-volt receptacles installed in _____ .

Question 24: Per NEC Article 725, which of the following is a common example of a Class 2 remote control and signaling circuit?

Question 25: Per NEC 430.103, the disconnecting means for a motor shall be located _____ .

Question 26: Per NEC 352.30(A), PVC conduit (rigid nonmetallic conduit) shall be secured within _____ of each outlet box, junction box, device box, conduit body, or other conduit termination.

Question 27: An industrial facility has a system power factor of 0.70 lagging due to a large number of electric motors. To correct this power factor toward unity (1.0), the facility should install _____ .

Question 28: Per NEC 110.26(D), illumination shall be provided for all working spaces around _____ installed indoors.

Question 29: Per NEC 410.16(C), which type of luminaire (light fixture) is NOT permitted in a clothes closet?

Question 30: Per NEC 210.52(C)(1), for kitchen countertop spaces in a dwelling unit, receptacle outlets shall be installed so that no point along the wall line of the countertop is more than _____ from a receptacle outlet in that space.

Key NEC References for This Test

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