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JOURNEYMAN NEC 2023 FREE FULL-LENGTH EXAM

Washington Journeyman Electrician Practice Test - Full-Length Test 1

A full-length, 77-question practice exam covering all 8 core NEC topic areas, weighted the same way the real exam is. Modeled on Washington's real licensing exam format.

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240 min

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77 questions, 240 min, 70% to pass — sized and paced like the Washington licensing exam. Finish it to see your score and your 3 weakest topics, free.

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TOPICS COVERED

Motor Circuits Load Calculations Wiring Methods and Materials Wiring and Protection Equipment for General Use General Requirements Special Equipment Special Occupancies

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77 questions in 240 minutes, sized and paced like the Washington journeyman exam.

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How to Use This Practice Test

This Washington Journeyman Electrician Practice Test - Full-Length Test 1 has 77 questions with detailed answers and NEC references. Take the full test, review every wrong answer, and look up the NEC article it references before moving on.

Tip: This is an open-book exam — tab your NEC index and Articles 210, 250, and 430 before you start.

Topics covered: Branch circuits, grounding, wiring methods, load calculations, and motors.
Passing score: 70–75% (most states). Aim for 80% on practice tests so the real exam feels easy.
Questions: 77 multiple-choice, one correct answer each

Washington Journeyman Electrician Practice Test - Full-Length Test 1 — Question List

Question 1: A replacement motor-compressor has a rated-load current of 40 amperes. What is the minimum ampere rating of its disconnecting means?

46 amperes
40 amperes
50 amperes
44 amperes

NEC Reference: NEC 440.12(A)(1)

Question 2: Per Table 220.55, what is the maximum demand load for a single 12 kW household cooking range when no other ranges are present?

5 kW
8 kW
12 kW
15 kW

NEC Reference: NEC Table 220.55, Column C

Question 3: What is the corrected ampacity of 2/0 copper THWN-2 in a dry location where the ambient temperature is 40°C?

170 Amperes
195 Amperes
177 Amperes
160 Amperes

NEC Reference: NEC 310.16

Question 4: For electrical sign what is minimum feeder/service conductor calculated load?

1500 VA
1200 VA
1000 VA
1800 VA

NEC Reference: NEC 220.14(F)

Question 5: The distance between the service pole and a house is 120 ft. What is the minimum copper overhead span conductor size (1000 V or less)?

6 AWG
8 AWG
10 AWG
12 AWG

NEC Reference: NEC 225.6(A)(1)

Question 6: An incandescent lamp for general use on lighting branch circuits must not be equipped with a medium base if rated more than:

150 watts
200 watts
300 watts
400 watts

NEC Reference: NEC 410.103

Question 7: What is the minimum branch-circuit rating for a household range rated 10 kW?

30 amperes
20 amperes
40 amperes
25 amperes

NEC Reference: NEC 210.19(A)(3)

Question 8: A rooftop A/C unit disconnect is installed in the equipment room below — you cannot see the unit from the disconnect. What must you do to comply with 440.14?

The disconnect must be lockable in the open position per 110.25
A second disconnect must be installed on the roof next to the unit
Post a warning sign at the panel — no other action needed
Nothing extra is required as long as the disconnect is labeled

NEC Reference: NEC 440.14

Question 9: Which buried conductors require a warning ribbon in the trench when buried 18 inches or more below grade?

Service conductors
Branch-circuit conductors
Feeder conductors
Class 2 control conductors

NEC Reference: NEC 300.5(D)(3)

Question 10: What minimum working space depth is required for equipment rated 601–1000 volts with exposed live parts on one side and grounded parts on the other (Condition 2)?

3 ft
4 ft
5 ft
6 ft

NEC Reference: NEC Table 110.26(A)(1)

Question 11: Where a panelboard is supplied through a transformer, the panelboard overcurrent protection must be located on the ____ side of the transformer.

Primary
Secondary

NEC Reference: NEC 408.36(B)

Question 12: A 3-phase 480V feeder carries 100A over 250 ft using 1/0 AWG copper (resistance 0.122 Ω/1000 ft). Approximate voltage drop?

About 3V
About 5V
About 8V
About 12V

NEC Reference: NEC Chapter 9 Table 8 / 215.2 IN

Question 13: Which conductors are NOT counted in box fill calculations?

Conductors that originate and terminate entirely within the box
A conductor loop less than 12 inches long
A conductor that terminates in the box
A conductor that passes through the box without a splice

NEC Reference: NEC 314.16(B)(1)

Question 14: The ampacity of feeder tap conductors not over 10 ft long must not be less than the rating of the device they terminate in.

True
False

NEC Reference: NEC 240.21(B)(1)

Question 15: A 3 × 2 × 2½-inch device box (14.5 cu in) has 2 incoming 12 AWG cables (4 conductors + 2 EGCs), one internal cable clamp, and one duplex receptacle on 12 AWG. Is there enough room?

Yes — the 14.5 cu in box is large enough for this installation
No — the required fill is 18.0 cu in, which exceeds the 14.5 cu in box
Yes — EGCs and clamps are not counted for standard device boxes
No — device boxes cannot have cable clamps and devices at the same time

NEC Reference: NEC 314.16

Question 16: Every commercial occupancy that is accessible to pedestrians must have at least one circuit dedicated to what?

An outdoor GFCI circuit
A sign or outline lighting outlet
An emergency lighting circuit
A dedicated circuit for the cash register

NEC Reference: NEC 600.5(A)

Question 17: What is the smallest conductor permitted for the pool equipotential bonding grid?

8 AWG solid copper
12 AWG copper
10 AWG copper
6 AWG aluminum

NEC Reference: NEC 680.26(B)

Question 18: How many 8 AWG conductors are permitted in a 4 × 1½-inch square metal box?

NEC Reference: NEC 314.16(B)

Question 19: Class II locations are those that are hazardous because of the presence of ____

Flammable gases
Flammable liquids
Combustible dust
Easily ignitible fibers

NEC Reference: NEC 500.6

Question 20: The MCC diagram shows three motors: 50HP (65A FLA), 25HP (34A FLA), and 15HP (21A FLA), all at 460V, 3-phase. What is the minimum feeder conductor ampacity to this MCC?

120 A (sum of all three FLAs)
136 A (125% of largest plus the rest)
150 A (125% of the full sum)
175 A (125% of each motor added)

NEC Reference: NEC 430.24

Question 21: Lampholders connected to branch circuits rated more than ____ must be of the heavy-duty type.

20 amperes
25 amperes
40 amperes
45 amperes

NEC Reference: NEC 210.21(A)

Question 22: Dead ends of metal wireways do not need to be closed.

True
False

NEC Reference: NEC 376.58

Question 23: What is the maximum operating RMS voltage of a low voltage lighting system?

30 volts
25 volts
40 volts
35 volts

NEC Reference: NEC 411.1

Question 24: Which of the following is NOT a permitted rating for a branch circuit supplying two or more outlets for fixed electric space heaters in a dwelling unit?

30 amp
40 amp
20 amp
25 amp

NEC Reference: NEC 424.3

Question 25: What must be provided for electrical equipment that is exposed to physical damage?

Warning signs
Working space
Enclosures or guards
Extra headroom

NEC Reference: NEC 110.27(B)

Question 26: In wet locations, exposed raceways, boxes and fittings must be mounted so there is at least how much air space between them and the wall?

NEC Reference: NEC 300.6(D)

Question 27: What is the minimum general lighting load for a 3,500 sq ft warehouse?

4,200 VA
700 VA
3,500 VA
875 VA

NEC Reference: NEC Table 220.42(A)

Question 28: Raceways may be used as a means of support for other raceways, cables or cords.

True
False

NEC Reference: NEC 300.11(C)

Question 29: Each boat slip at a marina that has shore power outlets must have its own disconnecting means. Where must this disconnect be located?

On the dock at the slip, readily accessible to that slip
In the marina office only
Inside the main service panel at the head of the dock
On the boat itself at the shore power inlet

NEC Reference: NEC 555.17

Question 30: The maximum overcurrent device for a 14 AWG copper branch circuit conductor is:

NEC Reference: NEC 240.4(D)(3)

Question 31: Each panelboard must be protected by an overcurrent device. For a panelboard rated at 200A, the overcurrent device protecting the panel must be rated at:

Any size — the panel breakers protect the conductors
Not greater than the panelboard bus ampere rating (200A or less)
At least 125% of the calculated load
No panelboard protection is required if the service entrance is protected

NEC Reference: NEC 408.36

Question 32: An equipment grounding conductor is counted as a current-carrying conductor when applying adjustment factors.

True
False

NEC Reference: NEC 310.15(F)

Question 33: Cranes and hoists are covered by which NEC article?

Article 430
Article 530
Article 610
Article 670

NEC Reference: NEC Article 610

Question 34: Electrical equipment at 120/240 volts has exposed live parts on the front only (Condition 1). What minimum working space depth is required in front of it?

4 feet
3 feet
5 feet
2 feet

NEC Reference: NEC Table 110.26(A)(1)

Question 35: All 125-volt, 15- and 20-ampere receptacles installed in dwelling unit bathrooms require:

Non-grounding receptacles
Weatherproof receptacles
GFCI protection
Protective guards

NEC Reference: NEC 210.8(A)(1)

Question 36: The electrical room diagram shows a 480V switchboard against a wall. There is 2.5 feet of clear space between the front of the switchboard and a column directly in front of it. The switchboard has exposed live parts on the front only (Condition 1). Is this working clearance adequate?

Yes — 2.5 feet is enough for a 480V switchboard
No — 480V Condition 1 requires at least 3 feet of working clearance
Yes — the 3-foot rule only applies when the switchboard is open
No — 480V equipment always requires at least 4 feet regardless of condition

NEC Reference: NEC Table 110.26(A)(1)

Question 37: In a panelboard, two grounded (neutral) conductors generally must not terminate under the same terminal.

True
False

NEC Reference: NEC 408.41

Question 38: What is the ampacity of a conductor that supplies a single phase motor used in continuous duty applications?

Not less than 115 % of motor FLC
Not less than 125 % of motor FLC
Less than 115 % of motor FLC
Less than 125 % of motor FLC

NEC Reference: NEC 430.22(A)

Question 39: Two motors share a feeder: 25 HP, 3-phase, 460 V (FLC 34 A) and 10 HP, 3-phase, 460 V (FLC 14 A). Per 430.24, what is the minimum feeder conductor ampacity?

48A
56.5A
60A
70A

NEC Reference: NEC 430.24

Question 40: Per the NEC, what is the general lighting unit load used for branch-circuit and feeder or service calculations for a single-family dwelling?

3 Volt-ampere per square foot
2 Volt-ampere per square foot
1 Volt-ampere per square foot
4 Volt-ampere per square foot

NEC Reference: NEC 220.41

Question 41: Conductors from a generator's terminals to the first overcurrent device must have an ampacity of not less than 115% of the generator nameplate current. This rule comes from:

445.13
230.79
240.21
250.30

NEC Reference: NEC 445.13

Question 42: A pull box has three 2-inch conduits entering one side and leaving the opposite side (a straight pull). What is the minimum interior length of the box between the two conduit entry walls?

12 inches
16 inches
24 inches
36 inches

NEC Reference: NEC 314.28(A)(1)

Question 43: What is the maximum rating of overcurrent devices protecting switchboard circuits that supply potential (voltage) transformers and pilot lights?

15 amperes
25 amperes
30 amperes
20 amperes

NEC Reference: NEC 408.52

Question 44: What is the maximum overload protection for a 2 HP, 230-volt single-phase continuous-duty motor with a 12 A full-load current and a 1.1 service factor?

13.8 amperes
15 amperes
12 amperes
18 amperes

NEC Reference: NEC 430.32(A)(1)

Question 45: After the first 3 kVA of general lighting load in a one-family dwelling, the next portion of the load (from 3 kVA up to 120 kVA) uses a demand factor of:

35%
50%
75%
100%

NEC Reference: NEC Table 220.45

Question 46: What size copper branch-circuit conductor can be used for a 5 HP, 230-volt, 3-phase motor with 75°C terminals?

14 AWG
12 AWG
10 AWG
8 AWG

NEC Reference: NEC 430.250

Question 47: When the circuits are protected by a overcurrent device rating of 1000 A, what size bonding jumper is required for each metal raceway?

1/0 AWG
2/0 AWG
3/0 AWG
4 AWG

NEC Reference: NEC 250.122

Question 48: If a single piece of equipment consists of five receptacles on it, what is the total calculated load?

450 Volt-Ampere.
900 Volt-Ampere
600 Volt-ampere
800 Volt-Ampere.

NEC Reference: NEC 220.14(I)

Question 49: What is the general lighting unit load for a restaurant, per NEC Table 220.42(A)?

1.5 VA per sq ft
1 VA per sq ft
3 VA per sq ft
2 VA per sq ft

NEC Reference: NEC Table 220.42(A)

Question 50: An all-electric restaurant has a connected load of 140 kVA supplied at 120/208 V, 3-phase. Using the optional method, what is the required service conductor ampacity?

311 amperes
538 amperes
423 amperes
621 amperes

NEC Reference: NEC 220.88

Question 51: How many number of 500 kcmil THWN conductors that can be installed in a 4 in. * 4 in. wireway?

4 conductors
5 conductors
6 conductors
7 conductors

NEC Reference: NEC 376.22(A)

Question 52: What is the minimum size copper conductor permitted for connecting a surge-protective device?

14 AWG
12 AWG
10 AWG
8 AWG

NEC Reference: NEC Article 242 (Part II)

Question 53: The secondary conductors from a wound-rotor motor to its controller are used for continuous-duty operation. They must be sized at what percentage of the motor rated secondary current?

100%
115%
125%
150%

NEC Reference: NEC 430.23(A)

Question 54: A quick-recovery storage water heater is rated 5600 W at 240 V. What size circuit breaker is required?

25 ampere
20 ampere
23.3 ampere
30 ampere

NEC Reference: NEC 422.13, 240.6(A)

Question 55: What is the general lighting unit load for a hotel, per NEC Table 220.42(A)?

1.7 VA per sq ft
2 VA per sq ft
1 VA per sq ft
3 VA per sq ft

NEC Reference: NEC Table 220.42(A)

Question 56: A motor with 25A FLA will not start on the 250% inverse-time breaker allowed by Table 430.52. Per 430.52, what is the absolute maximum breaker size you are allowed to install?

60 A (next standard size above 250%)
80 A (300% of FLA)
90 A (next standard size below the 400% ceiling)
100 A (400% of FLA, the maximum)

NEC Reference: NEC 430.52(C)(1) Exception No. 2

Question 57: Overhead service conductors (1000 volts or less) must generally have a vertical clearance above the roof surface of not less than:

8½ feet
12 feet
6 feet
10 feet

NEC Reference: NEC 230.24(A)

Question 58: A service supplies not more than two 2-wire branch circuits. What is the minimum rating of the service disconnecting means?

25 amperes
30 amperes
40 amperes
20 amperes

NEC Reference: NEC 230.79(B)

Question 59: In a standard dwelling load calculation (Table 220.45), what demand factor applies to the first 3 kVA of general lighting load?

35%
50%
75%
100%

NEC Reference: NEC Table 220.45

Question 60: Branch circuits supplying luminaires in dwelling units must not exceed what voltage between conductors?

120 volts
240 volts
208 volts
480 volts

NEC Reference: NEC 210.6

Question 61: A retail store has 5,000 sq ft of floor area. What is the minimum general lighting load using the unit load from Table 220.42(A)?

5,000 VA
9,500 VA
15,000 VA
17,500 VA

NEC Reference: NEC Table 220.42(A)

Question 62: A single-family dwelling has a 225 A service with a calculated load of 220 A and a maximum unbalanced neutral load of 110 A. What copper conductor sizes (75°C) are required for the ungrounded and neutral conductors?

1/0 AWG and 4 AWG
3/0 AWG and 3 AWG
3/0 AWG and 2 AWG
2/0 AWG and 2 AWG

NEC Reference: NEC 310.12, 220.61

Question 63: A ground rod used as a grounding electrode must be driven to a minimum depth of:

5 feet
6 feet
8 feet
10 feet

NEC Reference: NEC 250.53(A)(4)

Question 64: A Maryland dwelling has a bathroom with a 20-amp receptacle circuit. Per 210.11(C)(3), what must this circuit supply, and what other loads (if any) may share it?

It must supply bathroom receptacles, and may only share the circuit if it serves a single bathroom exclusively
It may freely share bedroom lighting regardless of bathroom count
Bathroom circuits are optional and rarely required
A 15 amp circuit is preferred over 20 amp

NEC Reference: NEC 210.11(C)(3)

Question 65: A dwelling is being remodeled and new branch circuits are added to an existing bedroom. Does 210.12(B) require AFCI protection on these new circuits?

No, AFCI only applies to new construction
Yes, new or extended bedroom circuits require AFCI protection
Only if the remodel affects more than half the bedroom
No, remodels are always grandfathered from AFCI rules

NEC Reference: NEC 210.12(B)

Question 66: A branch-circuit-rated circuit breaker is marked for use with 18 AWG copper and supplies a continuous load of 5.6 A. What overcurrent protection may be used?

7 amperes
10 amperes
15 amperes
20 amperes

NEC Reference: NEC 240.4(D)(1)

Question 67: A Colorado dwelling has a 125V receptacle installed in a garage at workbench height. Per 210.8(A)(2), is GFCI protection required?

No, only floor-level receptacles require GFCI
Yes, all 125V, 15/20A garage receptacles require GFCI protection
Only if within 6 feet of the overhead door
No, workbench receptacles are exempt

NEC Reference: NEC 210.8(A)(2)

Question 68: A dwelling has a single required 20-amp laundry branch circuit. Per 220.52(B), what VA value is used for this circuit in the load calculation?

1,500 VA
1,000 VA
2,000 VA
2,500 VA

NEC Reference: NEC 220.52(B)

Question 69: A Colorado contractor installs Type NM cable through bored holes in wood framing members. Per 300.4(A)(1), how far must the cable be from the nearest edge, or what protection is required?

At least 1-1/4 inch from the edge, or protected by a 1/16 inch steel plate if closer
At least 3 inches from the edge with no exceptions
No minimum distance applies to bored holes
At least 1/2 inch, with a plastic bushing required regardless of distance

NEC Reference: NEC 300.4(A)(1)

Question 70: Cord-and-plug-connected utilization equipment must not exceed what percentage of the branch-circuit rating?

NEC Reference: NEC 210.23(A)(1)

Question 71: A hardwired water heater draws well over 300 VA. What disconnect option satisfies 422.31(B)?

No disconnect is required for water heaters
A disconnect within sight, or one that can be locked open
Only a wall switch, location does not matter
A GFCI breaker only

NEC Reference: NEC 422.31(B)

Question 72: A Colorado dwelling has a 13 kW electric range. Using Table 220.55, Column C plus Note 1, what demand adjustment applies for a range exceeding 12 kW?

8 kW
8.4 kW
9 kW
13 kW

NEC Reference: NEC Table 220.55, Note 1

Question 73: A Michigan home has a room air conditioner that is cord-and-plug connected in a window. Per 440.63, what serves as the disconnecting means?

The attachment plug and receptacle can serve as the disconnecting means
A separate lockable disconnect switch is always mandatory
Room air conditioners can never be cord-and-plug connected
No disconnecting means is required for any room air conditioner

NEC Reference: NEC 440.63

Question 74: A Colorado retail plaza has an internally illuminated sign. Per 600.5(A), what is required regarding the branch circuit for the sign outlet?

A dedicated 20 amp branch circuit supplying no other loads
Signs may always share circuits freely with interior lighting
No dedicated circuit is ever required for signs
The circuit must always be rated 50 amps minimum

NEC Reference: NEC 600.5(A)

Question 75: A Maryland dairy barn has a concrete floor confinement area with metal equipment accessible to the cows. What does Article 547 generally require to protect the animals from stray voltage?

An equipotential plane, bonded to the grounding electrode system
A wooden floor with no bonding at all
No special requirement applies to agricultural buildings
A separate ungrounded electrical system just for the barn

NEC Reference: NEC 547.44

Question 76: Type NM cable (Romex) must be supported at maximum intervals of how many feet, and within how many inches of every box or cabinet?

Every 6 feet, within 6 inches of boxes
Every 4½ feet, within 12 inches of boxes
Every 10 feet, within 3 feet of boxes
Every 8 feet, within 24 inches of boxes

NEC Reference: NEC 334.30(A)

Question 77: A new branch circuit will supply outlets in a dwelling recreation room during a basement remodel. Does 210.12(B) require AFCI protection?

No, recreation rooms are not covered
Yes, recreation rooms are among the listed AFCI-required rooms
Only if the room has a wet bar
No, only bedrooms require AFCI protection

NEC Reference: NEC 210.12(B)

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.

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Washington Journeyman Electrician Practice Test - Full-Length Test 1

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Questions

Washington Journeyman Electrician Practice Test - Full-Length Test 1 — Question List

Question 1: A replacement motor-compressor has a rated-load current of 40 amperes. What is the minimum ampere rating of its disconnecting means?

Question 2: Per Table 220.55, what is the maximum demand load for a single 12 kW household cooking range when no other ranges are present?

Question 3: What is the corrected ampacity of 2/0 copper THWN-2 in a dry location where the ambient temperature is 40°C?

Question 4: For electrical sign what is minimum feeder/service conductor calculated load?

Question 5: The distance between the service pole and a house is 120 ft. What is the minimum copper overhead span conductor size (1000 V or less)?

Question 6: An incandescent lamp for general use on lighting branch circuits must not be equipped with a medium base if rated more than:

Question 7: What is the minimum branch-circuit rating for a household range rated 10 kW?

Question 8: A rooftop A/C unit disconnect is installed in the equipment room below — you cannot see the unit from the disconnect. What must you do to comply with 440.14?

Question 9: Which buried conductors require a warning ribbon in the trench when buried 18 inches or more below grade?

Question 10: What minimum working space depth is required for equipment rated 601–1000 volts with exposed live parts on one side and grounded parts on the other (Condition 2)?

Question 11: Where a panelboard is supplied through a transformer, the panelboard overcurrent protection must be located on the ____ side of the transformer.

Question 12: A 3-phase 480V feeder carries 100A over 250 ft using 1/0 AWG copper (resistance 0.122 Ω/1000 ft). Approximate voltage drop?

Question 13: Which conductors are NOT counted in box fill calculations?

Question 14: The ampacity of feeder tap conductors not over 10 ft long must not be less than the rating of the device they terminate in.

Question 15: A 3 × 2 × 2½-inch device box (14.5 cu in) has 2 incoming 12 AWG cables (4 conductors + 2 EGCs), one internal cable clamp, and one duplex receptacle on 12 AWG. Is there enough room?

Question 16: Every commercial occupancy that is accessible to pedestrians must have at least one circuit dedicated to what?

Question 17: What is the smallest conductor permitted for the pool equipotential bonding grid?

Question 18: How many 8 AWG conductors are permitted in a 4 × 1½-inch square metal box?

Question 19: Class II locations are those that are hazardous because of the presence of ____

Question 20: The MCC diagram shows three motors: 50HP (65A FLA), 25HP (34A FLA), and 15HP (21A FLA), all at 460V, 3-phase. What is the minimum feeder conductor ampacity to this MCC?

Question 21: Lampholders connected to branch circuits rated more than ____ must be of the heavy-duty type.

Question 22: Dead ends of metal wireways do not need to be closed.

Question 23: What is the maximum operating RMS voltage of a low voltage lighting system?

Question 24: Which of the following is NOT a permitted rating for a branch circuit supplying two or more outlets for fixed electric space heaters in a dwelling unit?

Question 25: What must be provided for electrical equipment that is exposed to physical damage?

Question 26: In wet locations, exposed raceways, boxes and fittings must be mounted so there is at least how much air space between them and the wall?

Question 27: What is the minimum general lighting load for a 3,500 sq ft warehouse?

Question 28: Raceways may be used as a means of support for other raceways, cables or cords.

Question 29: Each boat slip at a marina that has shore power outlets must have its own disconnecting means. Where must this disconnect be located?

Question 30: The maximum overcurrent device for a 14 AWG copper branch circuit conductor is:

Question 31: Each panelboard must be protected by an overcurrent device. For a panelboard rated at 200A, the overcurrent device protecting the panel must be rated at:

Question 32: An equipment grounding conductor is counted as a current-carrying conductor when applying adjustment factors.

Question 33: Cranes and hoists are covered by which NEC article?

Question 34: Electrical equipment at 120/240 volts has exposed live parts on the front only (Condition 1). What minimum working space depth is required in front of it?

Question 35: All 125-volt, 15- and 20-ampere receptacles installed in dwelling unit bathrooms require:

Question 36: The electrical room diagram shows a 480V switchboard against a wall. There is 2.5 feet of clear space between the front of the switchboard and a column directly in front of it. The switchboard has exposed live parts on the front only (Condition 1). Is this working clearance adequate?

Question 37: In a panelboard, two grounded (neutral) conductors generally must not terminate under the same terminal.

Question 38: What is the ampacity of a conductor that supplies a single phase motor used in continuous duty applications?

Question 39: Two motors share a feeder: 25 HP, 3-phase, 460 V (FLC 34 A) and 10 HP, 3-phase, 460 V (FLC 14 A). Per 430.24, what is the minimum feeder conductor ampacity?

Question 40: Per the NEC, what is the general lighting unit load used for branch-circuit and feeder or service calculations for a single-family dwelling?

Question 41: Conductors from a generator's terminals to the first overcurrent device must have an ampacity of not less than 115% of the generator nameplate current. This rule comes from:

Question 42: A pull box has three 2-inch conduits entering one side and leaving the opposite side (a straight pull). What is the minimum interior length of the box between the two conduit entry walls?

Question 43: What is the maximum rating of overcurrent devices protecting switchboard circuits that supply potential (voltage) transformers and pilot lights?

Question 44: What is the maximum overload protection for a 2 HP, 230-volt single-phase continuous-duty motor with a 12 A full-load current and a 1.1 service factor?

Question 45: After the first 3 kVA of general lighting load in a one-family dwelling, the next portion of the load (from 3 kVA up to 120 kVA) uses a demand factor of:

Question 46: What size copper branch-circuit conductor can be used for a 5 HP, 230-volt, 3-phase motor with 75°C terminals?

Question 47: When the circuits are protected by a overcurrent device rating of 1000 A, what size bonding jumper is required for each metal raceway?

Question 48: If a single piece of equipment consists of five receptacles on it, what is the total calculated load?

Question 49: What is the general lighting unit load for a restaurant, per NEC Table 220.42(A)?

Question 50: An all-electric restaurant has a connected load of 140 kVA supplied at 120/208 V, 3-phase. Using the optional method, what is the required service conductor ampacity?

Question 51: How many number of 500 kcmil THWN conductors that can be installed in a 4 in. * 4 in. wireway?

Question 52: What is the minimum size copper conductor permitted for connecting a surge-protective device?

Question 53: The secondary conductors from a wound-rotor motor to its controller are used for continuous-duty operation. They must be sized at what percentage of the motor rated secondary current?

Question 54: A quick-recovery storage water heater is rated 5600 W at 240 V. What size circuit breaker is required?

Question 55: What is the general lighting unit load for a hotel, per NEC Table 220.42(A)?

Question 56: A motor with 25A FLA will not start on the 250% inverse-time breaker allowed by Table 430.52. Per 430.52, what is the absolute maximum breaker size you are allowed to install?

Question 57: Overhead service conductors (1000 volts or less) must generally have a vertical clearance above the roof surface of not less than:

Question 58: A service supplies not more than two 2-wire branch circuits. What is the minimum rating of the service disconnecting means?

Question 59: In a standard dwelling load calculation (Table 220.45), what demand factor applies to the first 3 kVA of general lighting load?

Question 60: Branch circuits supplying luminaires in dwelling units must not exceed what voltage between conductors?

Question 61: A retail store has 5,000 sq ft of floor area. What is the minimum general lighting load using the unit load from Table 220.42(A)?

Question 62: A single-family dwelling has a 225 A service with a calculated load of 220 A and a maximum unbalanced neutral load of 110 A. What copper conductor sizes (75°C) are required for the ungrounded and neutral conductors?

Question 63: A ground rod used as a grounding electrode must be driven to a minimum depth of:

Question 64: A Maryland dwelling has a bathroom with a 20-amp receptacle circuit. Per 210.11(C)(3), what must this circuit supply, and what other loads (if any) may share it?

Question 65: A dwelling is being remodeled and new branch circuits are added to an existing bedroom. Does 210.12(B) require AFCI protection on these new circuits?

Question 66: A branch-circuit-rated circuit breaker is marked for use with 18 AWG copper and supplies a continuous load of 5.6 A. What overcurrent protection may be used?

Question 67: A Colorado dwelling has a 125V receptacle installed in a garage at workbench height. Per 210.8(A)(2), is GFCI protection required?

Question 68: A dwelling has a single required 20-amp laundry branch circuit. Per 220.52(B), what VA value is used for this circuit in the load calculation?

Question 69: A Colorado contractor installs Type NM cable through bored holes in wood framing members. Per 300.4(A)(1), how far must the cable be from the nearest edge, or what protection is required?