JOURNEYMAN NEC 2023 FULL-LENGTH PRO

Washington Journeyman Electrician Practice Test - Full-Length Test 1

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Frequently Asked Questions

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.

How to Use This Practice Test

This Washington Journeyman Electrician Practice Test - Full-Length Test 1 has 69 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: 69 multiple-choice, one correct answer each

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

Question 1: If a replacement motor compressor draws 48 amperes , what s the minimum rating of disconnect 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 a 2/0 THWN conductors in a dry location. If the ambient temperature of location is 40⁰C?

170 Amperes
195 Amperes
180 Amperes
160 Amperes

NEC Reference: NEC 310.15(B)(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 service pole and the house building is 120 ft. what is the minimum overhead span wire size?

No 6
No 8
No 10

NEC Reference: NEC 224.6(a)

Question 6: A incandescent-lamp must not be equipped with medium base if rated more than ............... watts.

150 watts
200 watts
300 watts
400 watts

NEC Reference: NEC 410.103

Question 7: Which of the following is the minimum branch circuit rating that will be used for house hold appliances where the load is 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 of the following conductors buried under 18 inch or more should have warning ribbon placed in the trench?

service conductors
branch circuit conductors
feeder circuit conductos

NEC Reference: NEC 300.5(D)(3)

Question 10: The minimum working depth ................. shall be required — at electrical equipment rated at 601 volts where it has one side exposed live part and grounded parts at anther side of working space

3 ft
4 ft
5 ft
6 ft

NEC Reference: NEC 110.34(1)

Question 11: In the panel schedule shown, circuit 11 is labeled "BR 1 Lights/Recep (AFCI)". A bedroom outlet on this circuit also serves the bath sink area within 6 ft. What protection is required at the bath outlet?

AFCI only
GFCI only
Both AFCI and GFCI (combo or upstream)
No additional protection beyond the bedroom AFCI

NEC Reference: NEC 210.8(A)(7) / 210.12

Question 12: The over current protection must be placed on — ........... side of transformer, if a panel board is supplied by the transformer?

Primary
Secondary

NEC Reference: NEC 408.36(B)

Question 13: The ampacity of the branch circuit conductors of 600 volts normal or more shall not be less than 150 % of rated designated load of the utilization equipment.

True
False

NEC Reference: NEC 210.19(B)(1)

Question 14: An additional grounding connection shall me made to the transformer supplying the feeder service in the building.

True
False

NEC Reference: NEC 250.24(2)

Question 15: A 3-phase 480V feeder carries 100A over 250 ft using 1/0 AWG copper (resistance 0.122 ?/1000 ft). Approximate voltage drop?

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

NEC Reference: NEC Chapter 9 Table 8 / 215.2 IN

Question 16: Which of the following conductors that will not be counted for box fill calculations?

conductors that originate and terminate with in the box
conductor loop less than 12-inch long
conductor that terminates in a box

NEC Reference: NEC 314.16(B)(1)

Question 17: The ampacity of the feeder tap conductors not less than 10 ft shall not be less than the rating of its terminating device.

True
False

NEC Reference: NEC 249.21

Question 18: The box diagram shows a 3–2 — 2 — -inch device box (14.5 cu in) with: 2 incoming 12 AWG cables (4 conductors + 2 EGCs), one internal cable clamp, and one duplex receptacle on 12 AWG. Is there enough room in this box?

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 19: 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 20: Which of the following is the smallest conductor permitted for pool equipment is :

8 AWG
12 AWG
10 AWG
6 AWG

NEC Reference: NEC 680.26(B)

Question 21: How many maximum number of No 8 conductors that a (4–1/2) square metal box can enclose as per NEC 2011?

NEC Reference: NEC 314.16(B)

Question 22: In a building that houses livestock, receptacles and equipment within what height above the floor must have GFCI protection?

1 meter (3.3 feet)
1.8 meters (6 feet)
2.5 meters (8.2 feet)
3 meters (10 feet)

NEC Reference: NEC 547.5(G)

Question 23: Class II locations are those that are hazardous because of the presence of ......................

Flammable gases
flammable liquids
combustible dust
All options are correct

NEC Reference: NEC 500.6

Question 24: 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?

120A — sum of all three FLAs with no multiplier
136A × 125% of largest plus sum of the rest
150A × 125% applied to the full sum
175A × 125% of each motor added separately

NEC Reference: NEC 430.24

Question 25: If the branch circuit rating more than ................., the lamp holders connected to it should be of the heavy duty type.

20 amperes
25 amperes
40 amperes
45 amperes

NEC Reference: NEC 210.21(A)

Question 26: Dead ends of metal wireways need not be closed.

True
False

NEC Reference: NEC 376.58

Question 27: 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 28: Which of the following is not a rating of a branch circuit used for electric space heaters installed in dwelling family unit?

30 amp
40 amp
20 amp
25 amp

NEC Reference: NEC 424.3

Question 29: Which of the following must be provided near electronic equipment which are exposed to physical damage?

warning signs
working space
enclosures or gaurds
sufficient head room

NEC Reference: NEC 110.27(B)

Question 30: In wet area a raceway, fittings shall be spaced not less than ...........inch

NEC Reference: NEC 300.6

Question 31: what is the minimum general lightening load required for 3500 square foot ware house as permitted by NEC ?

700 VA
3500 VA
7000 VA
4500 VA

NEC Reference: NEC 220.12

Question 32: Raceways can be used as a means of support for other raceways,cables and cords.

True
False

NEC Reference: NEC 300.11

Question 33: 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 34: The maximum overcurrent device for a 14 AWG copper branch circuit conductor is:

NEC Reference: NEC 240.4(D)(3)

Question 35: 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 36: Equipment grounding conductors can be considered as current carrying conductors in some cases?

False
True

NEC Reference: NEC 310.15(B)(5)

Question 37: Cranes and hoists are covered by which NEC article?

Article 430
Article 530
Article 610
Article 670

NEC Reference: NEC Article 610

Question 38: Where live parts are exposed on front side of electrical equipment, what shall be the minimum working space provided in front of such equipment?

4 feet
3 feet
5 feet
2 feet

NEC Reference: NEC 110.26(A)

Question 39: All 15 or 20 ampere receptacle outlets installed in bathrooms of dwelling unit must always require ...........................

non ground receptacles
water proof receptacles
Ground fault circuit interceptor ( GFCI)
protective gaurd

NEC Reference: NEC 210.8(A)(1)

Question 40: 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 41: In a Panel board two neutral conductors must not terminate on the same terminal.

True
False

NEC Reference: NEC 408.341

Question 42: 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 430.6

Question 43: For conductors supplying portable signs in a dry location what is the maximum length in feet allowed?

NEC Reference: NEC 600.10(D)(2)

Question 44: Two motors share a feeder: 25 HP 3? 460V (FLC 34A) and 10 HP 3? 460V (FLC 14A). Per 430.24, minimum feeder conductor ampacity is:

48A
56.5A
60A
70A

NEC Reference: NEC 430.24

Question 45: As per NEC what is the minimum general lighting load that is used for branch circuit and feeder/Service calculations of a single family dwelling unit?

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 220.12

Question 46: A 100 kW generator output conductor must be protected by an OCPD rated not more than 115% of the nameplate current. This rule comes from:

445.13
230.79
240.21
250.30

NEC Reference: NEC 445.13

Question 47: 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 48: What is the maximum rating of overcurrent devices protecting panelboard supplying potential transformers?

15 amperes
25 amperes
30 amperes
20 amperes

NEC Reference: NEC 408.52

Question 49: Which of the following is the overload protection rating of a 2 HP 230 volts single phase motor used in continuous duty applications. The service factor of a motor is 1.1.

12 amperes
10 amperes
14 amperes
8 amperes

NEC Reference: NEC 430.248

Question 50: 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 220.42

Question 51: What size branch circuit conductor that can be used for a 5 HP, 230 volts three phase motor with terminals rated at 75⁰ C?

14 AWG
12 AWG
10 AWG
8 AWG

NEC Reference: NEC 430.250

Question 52: Which is the minimum size copper conductor is required for the grounding electrode conductor (GEC) connected to a ground rod

6 AWG
8 AWG
10 AWG
12 AWG

NEC Reference: NEC 250.166(A)

Question 53: When the circuits are protected by a over current 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 54: 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 55: What is the unit load per square foot in volt ampere for a restaurant?

1 VA
2 VA
3 VA
1 1/2 VA

NEC Reference: NEC 220.12

Question 56: The connected load of all-electric restaurant is 140 KVA which is supplied by a 120/208 V three phase supply. What is the required service conductor ampacity?

311 amperes
538 amperes
423 amperes
621 amperes

NEC Reference: NEC 220.88

Question 57: 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 58: What is the minimum size of copper conductor used for surge protective devices?

14 AWG
12 AWG
10 AWG
8 AWG

NEC Reference: NEC 285.26

Question 59: 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 60: A quick recovery electric heater is rated 5600 watts 240 volts. What rating of circuit breaker is required for protecting it?

25 ampere
20 ampere
23.3 ampere
30 ampere

NEC Reference: NEC 240.6

Question 61: What is the unit load in volt ampere per square foot for a hotel?

3 VA
2 VA
1 VA
5 VA

NEC Reference: NEC 220.12

Question 62: 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?

60A — next standard above the 250% value
80A × 300% of FLA
90A — next standard below the 400% ceiling
100A × 400% of FLA (the hard maximum)

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

Question 63: For conductors used in overhead service less than 600 volts shall have a vertical clearance of .............feet above the roof surface with out any exception.

NEC Reference: NEC 230.24

Question 64: A Residence has less than 2 branch circuits, what is the minimum size of 3 wire service required?

25 Amperes
30 Amperes
40 Amperes
20 Amperes

NEC Reference: NEC 230.79(B)

Question 65: When doing a standard dwelling load calculation (Table 220.42), what demand factor applies to the first 3 kVA of general lighting load?

35%
50%
75%
100%

NEC Reference: NEC Table 220.42

Question 66: The branch circuits that are connected to luminaries of dwelling units shall have maximum voltage of ..................

120 volts
240 volts
208 volts
480 volts

NEC Reference: NEC 210.6

Question 67: 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
10,000 VA
15,000 VA
17,500 VA

NEC Reference: NEC Table 220.42(A)

Question 68: What size conductor are required for a single family dwelling unit with a calculated load of 220 Amperes and the maximum unbalanced neutral load is 110 amperes?

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 310.15(B)(7)

Question 69: 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 250.52(A)(5)(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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Washington Journeyman Electrician Practice Test - Full-Length Test 1 — Question List

Question 1: If a replacement motor compressor draws 48 amperes , what s the minimum rating of disconnect 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 a 2/0 THWN conductors in a dry location. If the ambient temperature of location is 400C?

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

Question 5: The distance between service pole and the house building is 120 ft. what is the minimum overhead span wire size?

Question 6: A incandescent-lamp must not be equipped with medium base if rated more than ............... watts.

Question 7: Which of the following is the minimum branch circuit rating that will be used for house hold appliances where the load is 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 of the following conductors buried under 18 inch or more should have warning ribbon placed in the trench?

Question 10: The minimum working depth ................. shall be required — at electrical equipment rated at 601 volts where it has one side exposed live part and grounded parts at anther side of working space

Question 11: In the panel schedule shown, circuit 11 is labeled "BR 1 Lights/Recep (AFCI)". A bedroom outlet on this circuit also serves the bath sink area within 6 ft. What protection is required at the bath outlet?

Question 12: The over current protection must be placed on — ........... side of transformer, if a panel board is supplied by the transformer?

Question 13: The ampacity of the branch circuit conductors of 600 volts normal or more shall not be less than 150 % of rated designated load of the utilization equipment.

Question 14: An additional grounding connection shall me made to the transformer supplying the feeder service in the building.

Question 15: A 3-phase 480V feeder carries 100A over 250 ft using 1/0 AWG copper (resistance 0.122 ?/1000 ft). Approximate voltage drop?

Question 16: Which of the following conductors that will not be counted for box fill calculations?

Question 17: The ampacity of the feeder tap conductors not less than 10 ft shall not be less than the rating of its terminating device.

Question 18: The box diagram shows a 3–2 — 2 — -inch device box (14.5 cu in) with: 2 incoming 12 AWG cables (4 conductors + 2 EGCs), one internal cable clamp, and one duplex receptacle on 12 AWG. Is there enough room in this box?

Question 19: Every commercial occupancy that is accessible to pedestrians must have at least one circuit dedicated to what?

Question 20: Which of the following is the smallest conductor permitted for pool equipment is :

Question 21: How many maximum number of No 8 conductors that a (4–1/2) square metal box can enclose as per NEC 2011?

Question 22: In a building that houses livestock, receptacles and equipment within what height above the floor must have GFCI protection?

Question 23: Class II locations are those that are hazardous because of the presence of ......................

Question 24: 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 25: If the branch circuit rating more than ................., the lamp holders connected to it should be of the heavy duty type.

Question 26: Dead ends of metal wireways need not be closed.

Question 27: What is the maximum operating RMS voltage of a low voltage lighting system?

Question 28: Which of the following is not a rating of a branch circuit used for electric space heaters installed in dwelling family unit?

Question 29: Which of the following must be provided near electronic equipment which are exposed to physical damage?

Question 30: In wet area a raceway, fittings shall be spaced not less than ...........inch

Question 31: what is the minimum general lightening load required for 3500 square foot ware house as permitted by NEC ?

Question 32: Raceways can be used as a means of support for other raceways,cables and cords.

Question 33: Each boat slip at a marina that has shore power outlets must have its own disconnecting means. Where must this disconnect be located?

Question 34: The maximum overcurrent device for a 14 AWG copper branch circuit conductor is:

Question 35: 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 36: Equipment grounding conductors can be considered as current carrying conductors in some cases?

Question 37: Cranes and hoists are covered by which NEC article?

Question 38: Where live parts are exposed on front side of electrical equipment, what shall be the minimum working space provided in front of such equipment?

Question 39: All 15 or 20 ampere receptacle outlets installed in bathrooms of dwelling unit must always require ...........................

Question 40: 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 41: In a Panel board two neutral conductors must not terminate on the same terminal.

Question 42: What is the ampacity of a conductor that supplies a single phase motor used in continuous duty applications?

Question 43: For conductors supplying portable signs in a dry location what is the maximum length in feet allowed?

Question 44: Two motors share a feeder: 25 HP 3? 460V (FLC 34A) and 10 HP 3? 460V (FLC 14A). Per 430.24, minimum feeder conductor ampacity is:

Question 45: As per NEC what is the minimum general lighting load that is used for branch circuit and feeder/Service calculations of a single family dwelling unit?

Question 46: A 100 kW generator output conductor must be protected by an OCPD rated not more than 115% of the nameplate current. This rule comes from:

Question 47: 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 48: What is the maximum rating of overcurrent devices protecting panelboard supplying potential transformers?

Question 49: Which of the following is the overload protection rating of a 2 HP 230 volts single phase motor used in continuous duty applications. The service factor of a motor is 1.1.

Question 50: 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 51: What size branch circuit conductor that can be used for a 5 HP, 230 volts three phase motor with terminals rated at 750 C?

Question 52: Which is the minimum size copper conductor is required for the grounding electrode conductor (GEC) connected to a ground rod

Question 53: When the circuits are protected by a over current device rating of 1000 A, what size bonding jumper is required for each metal raceway?

Question 54: If a single piece of equipment consists of five receptacles on it, what is the total calculated load?

Question 55: What is the unit load per square foot in volt ampere for a restaurant?

Question 56: The connected load of all-electric restaurant is 140 KVA which is supplied by a 120/208 V three phase supply. What is the required service conductor ampacity?

Question 57: How many number of 500 kcmil THWN conductors that can be installed in a 4 in. * 4 in. wireway?

Question 58: What is the minimum size of copper conductor used for surge protective devices?

Question 59: 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 60: A quick recovery electric heater is rated 5600 watts 240 volts. What rating of circuit breaker is required for protecting it?

Question 61: What is the unit load in volt ampere per square foot for a hotel?

Question 62: 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 63: For conductors used in overhead service less than 600 volts shall have a vertical clearance of .............feet above the roof surface with out any exception.

Question 64: A Residence has less than 2 branch circuits, what is the minimum size of 3 wire service required?

Question 65: When doing a standard dwelling load calculation (Table 220.42), what demand factor applies to the first 3 kVA of general lighting load?

Question 66: The branch circuits that are connected to luminaries of dwelling units shall have maximum voltage of ..................

Question 67: 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 68: What size conductor are required for a single family dwelling unit with a calculated load of 220 Amperes and the maximum unbalanced neutral load is 110 amperes?

Question 69: A ground rod used as a grounding electrode must be driven to a minimum depth of:

Key NEC References for This Test

Every Washington Variant. One Real Result.

Question 3: What is the corrected ampacity of a 2/0 THWN conductors in a dry location. If the ambient temperature of location is 40⁰C?

Question 51: What size branch circuit conductor that can be used for a 5 HP, 230 volts three phase motor with terminals rated at 75⁰ C?