JOURNEYMAN NEC 2023 FULL-LENGTH PRO

Texas Journeyman Electrician Practice Test - Full-Length Test 1

A full-length, 79-question practice exam covering all 8 core NEC topic areas, weighted the same way the real exam is. Modeled on Texas's real licensing exam format. Premium — part of Full-Length Pro.

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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 Texas Journeyman Electrician Practice Test - Full-Length Test 1 has 79 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: 79 multiple-choice, one correct answer each

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

Question 1: Working space depth in front of a 480Y/277V switchboard with exposed live parts on both sides of the working space is (Condition 3, Table 110.26(A)(1)):

3 ft
3.5 ft
4 ft
6 ft

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

Question 2: A 6 AWG THWN copper conductor (75°C rated, 65A per Table 310.16) is installed in a location where the ambient temperature is 50°C. What is the corrected ampacity?

49A — 65A × 0.75 temperature correction
54A — 65A × 0.82
58A — 65A × 0.88
65A — no correction needed below 60°C

NEC Reference: NEC Table 310.15(B)(1)

Question 3: What size service entrance conductors are required for 250 A continuous three phase load if the terminals are at ambient temperature of 70 C?

3/0 AWG
250 kcmil
400 kcmil
2/0 AWG

NEC Reference: NEC 312.5

Question 4: You install 1/0 AWG THHN conductors (90°C insulation, 170A per Table 310.16). The terminations on the panel and equipment are marked "75°C." Which ampacity column from Table 310.16 must you use?

The 90°C column — the wire is rated 90°C so that is the limiting factor
The 75°C column — the terminal rating limits you to 75°C ampacity
The 60°C column — always use the most conservative value
Either column — the higher of the two values governs

NEC Reference: NEC 110.14(C)(1)

Question 5: What is the maximum branch circuit load for a 10 kW single electric range in a dwelling unit?

8 kW
10 KW
7 KW
6 KW

NEC Reference: NEC 220.555

Question 6: The conductor amapcity is 150 amperes. What is the maximum allowed conductor ampacity of each conductor if 5 of those conductors are placed in flexible cord?

120 amperes
135 amperes
140 ampere
105 amperes

NEC Reference: NEC 400.5(A)(3)

Question 7: If the panel board rating is 100 amperes, what shall be the over current device rating located in panel board?

125 amperes
100 amperes
less than 100 amperes
greater than 100 amperes

NEC Reference: NEC 408.36

Question 8: Which of the following is maximum operating voltage of a low voltage lighting system?

30 volts
25 volts
40 volts
35 volts

NEC Reference: NEC 411.2

Question 9: In which of the following the panel boards must be enclosed?

Cut boxes
Cabinets
All options are correct
Enclosures designed for the purpose

NEC Reference: NEC 408.38

Question 10: What is the primary protection required for a 2 wire 480V to 120 V Transformer rated at 900 VA?

NEC Reference: NEC 450.3

Question 11: The NEC defines a continuous load as a load that is expected to continue without interruption for at least:

1 hour
2 hours
3 hours
8 hours

NEC Reference: NEC Article 100 (Definitions)

Question 12: Agricultural buildings with metallic livestock confinement equipment (stalls, pens) must have an equipotential plane. What is the main reason for this requirement?

To reduce lightning strike damage to the building
To keep all metal parts at the same voltage and prevent stray voltage from stressing animals
To provide a low-resistance path for short circuit current
To replace the need for grounding electrodes in wet soil

NEC Reference: NEC 547.10

Question 13: What is the the minimum size copper wire that can be used for outside overhead wiring, if the wire carries more than 600 volts?

No. 6 AWG
No. 8 AWG
No. 10 AWG
No. 12 AWG

NEC Reference: NEC 225.6(A)(2)

Question 14: What is the purpose of a current-limiting fuse (such as a Class J or Class L fuse) compared to a standard breaker?

They last longer before needing replacement
They limit peak fault current by opening before it reaches its full value
They allow higher sustained overloads without blowing
They are rated for continuous 100% loading

NEC Reference: NEC 240.2 / UL 248

Question 15: At which of the following percentage the demand factor for six house hold electric cloth dryers is calculated?

75 %
70 %
85 %
80 %

NEC Reference: NEC 220.54

Question 16: What size of feeder conductors are required for a dwelling unit which has a calculated load of 240 A. The service disconnect is rated for 250 A and feeder conductors carry entire load of the dwelling unit?

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

NEC Reference: NEC 207.5

Question 17: Eight 10 AWG THWN conductors (35A ampacity each) are all installed in the same conduit, and all eight are current-carrying. What is the adjusted ampacity for each conductor?

24.5A — 35A × 0.70 (7–9 conductor factor)
28A — 35A × 0.80 (4–6 conductor factor)
31.5A — 35A × 0.90
35A — no derating needed for 10 AWG

NEC Reference: NEC Table 310.15(C)(1)

Question 18: 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 19: When two or more conductors are installed in parallel to form a single large feeder, each individual conductor must be at least what size?

4 AWG copper — any size is fine if the total is adequate
2 AWG copper minimum for parallel conductors
1/0 AWG copper minimum per conductor
4/0 AWG copper — parallel conductors must be very large

NEC Reference: NEC 310.10(H)(1)

Question 20: A central A/C condensing unit nameplate shows a branch-circuit selection current of 24A. What is the maximum overcurrent device allowed on its branch circuit?

NEC Reference: NEC 440.22(A)

Question 21: The ungrounded ducts or conduits should be sealed before entering buildings.

True
False

NEC Reference: NEC 230.8

Question 22: 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 23: The calculated demand load of 120/240 dwelling unit is 250 ampere, which of the following minimum size of THW copper cane be used as service conductor?

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

NEC Reference: NEC 310.15(B)

Question 24: What is permissible voltage drop in percentage for combination of both feeders and branch circuit conductors?

NEC Reference: NEC 215.2(A)(4)

Question 25: The volume required for NO.14 conductors to be placed in a outlet box is ................. inch³

2.0
2.25
1.50
2.50

NEC Reference: NEC 314.16

Question 26: The cross sectional area of the conductors permitted in a seal shall not exceed ................... percent of the cross sectional area of a rigid metal conduit of the same trade size.

NEC Reference: NEC 501.15

Question 27: What is the minimum volume allowance required per a No 16 AWG conductor?

1.75 volume cu in
2.0 volume cu in
2.25 volume cu in
2.5 volume cu in

NEC Reference: NEC 316.14(B)

Question 28: When the motor nameplate is not available, which NEC table gives the full-load current for 3-phase AC induction motors?

Table 310.16
Table 430.248
Table 430.250
Table 430.52

NEC Reference: NEC Table 430.250

Question 29: You install a 75 kVA, 480–208Y/120V transformer in a building. The secondary creates a separately derived system. Where should the main bonding jumper (system bond) be made?

At the transformer secondary terminals or at the first disconnect — but only one location
At the transformer and again at every subpanel fed from it
At the main service entrance of the building
No bonding is required on the secondary of a separately derived system

NEC Reference: NEC 250.30(A)(1)

Question 30: What is the minimum feeder or service load for cloth dryers in a dwelling unit?

5000 watts
2500 watts
4000 watts
6500 watts

NEC Reference: NEC 220.54

Question 31: For stationary small motors rated less than .................., the branch circuit over current device — may serve as a controller.

1/2 horsepower
1/ 8 horse power
1 horsepower
5 horse power

NEC Reference: NEC 430.81

Question 32: How many 20 Amp circuits are required for a 2500 sq.ft dwelling unit?

NEC Reference: NEC 220.12

Question 33: The EMT conduit run in between two terminal points shall be securely fastened within ............. of a outlet box.

3 ft
10 ft
8 ft
5 ft

NEC Reference: NEC 358.30(A)

Question 34: When a flexible cord supply a pendant fixture in a class II location it must be indicated for ............................

hard use
extra hard use
class II use
Normal use

NEC Reference: NEC 502.140

Question 35: What is the minimum tap conductor ampacity which supply 30 amperes industrial heating appliance?

10 amperes
15 amperes
20 amperes
25 amperes

NEC Reference: NEC 210.19(A)(4)

Question 36: A single phase 5ph , 230 volts motor has name plate full load rating of 40 amp. What is its overload protection device rating in amperes?

46 amperes
40 amperes
50 amperes
60 amperes

NEC Reference: NEC 430.32

Question 37: The overhead clearance diagram shows a service drop crossing over different areas. Point A is above a sidewalk at the entrance to a house. Point B is above the driveway at the same house. Point C is above an alley used by delivery trucks. Which clearance is violated?

Point A at 11 feet is a violation — pedestrian entrance needs 10 feet minimum (compliant, actually)
Point C at 16 feet is a violation — truck traffic alley needs 18 feet minimum
Point B at 12 feet is a violation — residential driveway needs 15 feet minimum
No violations — all three points meet their clearance requirements

NEC Reference: NEC 230.24(B)

Question 38: A cord and plug device used as disconnecting means for a motor must be rated for ..................

Horsepower
voltage
Resistance
Current

NEC Reference: NEC 430.109(F)

Question 39: Metallic gas piping in a building must be bonded per 250.104(B). The bonding conductor is sized using which NEC table?

Table 250.66 — same as the GEC
Table 250.122 — based on the OCPD likely to energize the piping
Table 310.16 — ampacity of the conductor
The same size as the service neutral conductor

NEC Reference: NEC 250.104(B)

Question 40: What is the minimum power outlet required at each recreational vehicle site in an RV park?

A 15A, 125V general outlet is all that is required
At least one 20A, 125V outlet plus a 30A or 50A RV receptacle
A 60A, 240V outlet only
No minimum outlet requirement — owner decides

NEC Reference: NEC 551.77

Question 41: Cranes and hoists are covered by which NEC article?

Article 430
Article 530
Article 610
Article 670

NEC Reference: NEC Article 610

Question 42: The primary rating of a motor-generator arc welder is 30 A with a duty cycle of 30 percentage. What is the minimum size branch circuit conductor for the welder?

12 AWG
10 AWG
14 AWG
8 AWG

NEC Reference: NEC 630.11(A)

Question 43: The grounding electrode conductor (GEC) connecting to a ground rod does not need to be larger than what size copper conductor?

4 AWG copper
6 AWG copper
8 AWG copper
10 AWG copper

NEC Reference: NEC 250.66(A)

Question 44: 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 45: The full load current of 3 phase 3 HP continuous duty motor is 50 Amperes with service factor of 1.1. What is its rating of overload separator?

50
60
62.5
55

NEC Reference: NEC 430.32(A)(1)

Question 46: When four or more fixed appliances (other than ranges, dryers, A/C, or space heating) are on a feeder, the demand factor per 220.53 allows you to use what percentage of the total connected load?

50%
65%
75%
100%

NEC Reference: NEC 220.53

Question 47: A dwelling must have at least one dedicated branch circuit for the bathroom. What must that circuit be rated?

At least one 15A dedicated circuit
At least one 20A dedicated circuit
Two 15A circuits — one for each bathroom
Bathrooms can share any general lighting circuit

NEC Reference: NEC 210.11(C)(3)

Question 48: What is the primary over current device rating of a 2 wire 480 V to 120 V transformer rated at 1.8 KVA?

6 A
7 A
4 A
10 A

NEC Reference: NEC 450.3

Question 49: Enclosures, cabinets, cut boxes installed in wet locations shall be ...............

Weather proof
Water proof
air tight
Rain tight

NEC Reference: NEC 312.2

Question 50: What is the adjustment ampacity of a 3/0 THWN conductors in a wet location, if the raceway contains seven conductors in it?

122.5 amperes
125.5 amperes
140 amperes
133 amperes

NEC Reference: NEC 310.15(B)(16)

Question 51: What is the maximum support interval for a 2-inch rigid metal conduit (RMC) run?

10 feet
12 feet
16 feet
20 feet

NEC Reference: NEC Table 344.30(B)(2)

Question 52: What are the minimum heavy duty lamp holders that are permitted on 20 ampere branch circuit operated at 120 volts?

NEC Reference: NEC 220.21(A)

Question 53: What is the maximum voltage applied to — branch circuits that are connected to luminaries in dwelling unit?

120 volts
240 volts
150 volts
480 volts

NEC Reference: NEC 210.6

Question 54: The outline lighting system shall be at least .............. feet above the areas accessible to vehicles unless protected from physical damage.

NEC Reference: NEC 600.9

Question 55: The general lighting load in Volt-ampere/Sq.Foot that a church building requires is ..............

1 Volt-Ampere/ Sq.Foot
2 Volt-Ampere/ Sq.Foot
3 Volt-Ampere/ Sq.Foot
4 Volt-Ampere/ Sq.Foot

NEC Reference: NEC 220.12

Question 56: An instantaneous-trip circuit breaker (used for motor branch circuits) has no intentional time delay. What is the main advantage of this type of breaker?

It provides overload protection without a relay
It trips quickly on fault current but does not trip on motor inrush
It can be used without any other motor protection
It is the only type allowed for residential use

NEC Reference: NEC 430.52(C)(3)

Question 57: The panel diagram shows a 120/240V panel with a multiwire branch circuit. Circuit 1 is a single-pole 20A breaker with a black wire and circuit 3 is a single-pole 20A breaker with a red wire — both share a white neutral wire. Is this panel wiring correct?

Yes — two single-pole breakers are fine if they are on opposite legs
No — a handle tie or 2-pole breaker is required for multiwire branch circuits
Yes — as long as the neutral is the same color throughout
No — multiwire branch circuits are not permitted in residential panels

NEC Reference: NEC 210.4(B)

Question 58: The branch circuit over current device of the stationary motor which are rated less than ........... may serve as the controller of motor.

5 hp
3 hp
1 hp
1/8 hp

NEC Reference: NEC 430.81(A)

Question 59: What is the maximum continuous load that can be connected on a 240 volts 30 amperes circuit using two 10 AWG conductors?

24 amperes
30 amperes
26 amperes
28 amperes

NEC Reference: NEC 210.20(A)

Question 60: A 50 HP 460 volts three phase AC motor is supplied with THWN conductors. Which is of the following is the size of the branch circuit conductors?

81.25 amperes
74.75 amperes
70 amperes
85 amperes

NEC Reference: NEC 430.250

Question 61: What is the general lighting unit load for a 6000 square foot hospital?

12000 Volt-Ampere
6000 Volt-Ampere
18000 Volt-Ampere
3000 Volt-Ampere

NEC Reference: NEC 220.12

Question 62: What is the maximum constant wattage per linear meter allowed for heating cables embedded in concrete?

54
16 1/2
36
22 1/2

NEC Reference: NEC 424.4(A)

Question 63: The snap switches equipped in the panel boards are rated at 25 amperes, these switches must be protected not in excess of ..........................

NEC Reference: NEC 408.36(A)

Question 64: What must be the electrical fuse rating to protect 12 AWG Branch conductor?

20 amperes
35 amperes
25 amperes
40 amperes

NEC Reference: NEC 240.4(D)

Question 65: Liquidtight flexible nonmetallic conduit (LFNC) used as a flexible connection to equipment must not exceed what maximum length?

3 feet
4 — feet
6 feet
10 feet

NEC Reference: NEC 356.60

Question 66: What is general lighting unit load per square feet for hotels and guest room?

3 VA
2 VA
2 — VA
1 VA

NEC Reference: NEC 220.12

Question 67: A 75 kVA 480–208Y/120V transformer creates a separately derived system. The system bonding jumper is sized using:

Table 250.66
Table 250.102(C)(1)
Table 250.122
Table 310.16

NEC Reference: NEC 250.30(A)(1)

Question 68: Which of the following is a over current protection rating of a 30 amperes snap switch equipped on panel board?

200 amperes
100 amperes
50 amperes
150 amperes

NEC Reference: NEC 408.36

Question 69: Which of the following type of conductor is used to supply a 40 ampere single phase motor used for continuous duty applications?

No 8 THW
No 6 THW
No 12 THW
No 14 THW

NEC Reference: NEC 310.16

Question 70: What is the minimum general lightening load required for 1500 square foot single family dwelling unit as permitted by NEC?

4500 VA
4800 VA
3000 VA
1500 VA

NEC Reference: NEC 220.12

Question 71: What is the minimum size electrical service required for a single family dwelling unit?

100 amperes
150 amperes
200 amperes
50 amperes

NEC Reference: NEC 230.79(C)

Question 72: A 8 unit multifamily dwelling unit has an 5 KW electric dryer in each unit. What is total dryer demand load for building service or feeder?

24 KW
40 KW
20 KW
30 KW

NEC Reference: NEC 220.54

Question 73: which of the following conditions or places the — Surface metal raceways shall not be permitted to use?

in dry locations
class I division 2 location
in hoistways

NEC Reference: NEC 386.12

Question 74: Per 445.13, the conductors running from a generator output terminals to the first overcurrent device must be sized at what percentage of the generator nameplate current rating?

100%
115%
125%
150%

NEC Reference: NEC 445.13

Question 75: If 6 mobile homes are connected to a single feeder what is the demand factor that shall be used in calculating the load?

29 %
33 %
28%
35%

NEC Reference: NEC 550.31

Question 76: What is the maximum continuous load that can be connected to 240 volts 30 amperes branch circuit?

24 amperes
30 amperes
20 amperes
26 amperes

NEC Reference: NEC 210.20

Question 77: The lighting system protection ground terminals shall be bonded to which of the following grounding electrode system?

Building or structure
Distributed panel board
service entrance

NEC Reference: NEC 250.106

Question 78: What is the minimum size electrical service is required for a single family dwelling unit?

100 amperes
50 amperes
150 amperes
175 amperes

NEC Reference: NEC 230.79(C)

Question 79: In class I Division 1 location all fixed boxes and joints should be made .................

explosion proof
water proof
dust proof
fire proof

NEC Reference: NEC 500.7(A)

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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Texas Journeyman Electrician Practice Test - Full-Length Test 1

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How to Use This Practice Test

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

Question 1: Working space depth in front of a 480Y/277V switchboard with exposed live parts on both sides of the working space is (Condition 3, Table 110.26(A)(1)):

Question 2: A 6 AWG THWN copper conductor (75°C rated, 65A per Table 310.16) is installed in a location where the ambient temperature is 50°C. What is the corrected ampacity?

Question 3: What size service entrance conductors are required for 250 A continuous three phase load if the terminals are at ambient temperature of 70 C?

Question 4: You install 1/0 AWG THHN conductors (90°C insulation, 170A per Table 310.16). The terminations on the panel and equipment are marked "75°C." Which ampacity column from Table 310.16 must you use?

Question 5: What is the maximum branch circuit load for a 10 kW single electric range in a dwelling unit?

Question 6: The conductor amapcity is 150 amperes. What is the maximum allowed conductor ampacity of each conductor if 5 of those conductors are placed in flexible cord?

Question 7: If the panel board rating is 100 amperes, what shall be the over current device rating located in panel board?

Question 8: Which of the following is maximum operating voltage of a low voltage lighting system?

Question 9: In which of the following the panel boards must be enclosed?

Question 10: What is the primary protection required for a 2 wire 480V to 120 V Transformer rated at 900 VA?

Question 11: The NEC defines a continuous load as a load that is expected to continue without interruption for at least:

Question 12: Agricultural buildings with metallic livestock confinement equipment (stalls, pens) must have an equipotential plane. What is the main reason for this requirement?

Question 13: What is the the minimum size copper wire that can be used for outside overhead wiring, if the wire carries more than 600 volts?

Question 14: What is the purpose of a current-limiting fuse (such as a Class J or Class L fuse) compared to a standard breaker?

Question 15: At which of the following percentage the demand factor for six house hold electric cloth dryers is calculated?

Question 16: What size of feeder conductors are required for a dwelling unit which has a calculated load of 240 A. The service disconnect is rated for 250 A and feeder conductors carry entire load of the dwelling unit?

Question 17: Eight 10 AWG THWN conductors (35A ampacity each) are all installed in the same conduit, and all eight are current-carrying. What is the adjusted ampacity for each conductor?

Question 18: 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 19: When two or more conductors are installed in parallel to form a single large feeder, each individual conductor must be at least what size?

Question 20: A central A/C condensing unit nameplate shows a branch-circuit selection current of 24A. What is the maximum overcurrent device allowed on its branch circuit?

Question 21: The ungrounded ducts or conduits should be sealed before entering buildings.

Question 22: 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 23: The calculated demand load of 120/240 dwelling unit is 250 ampere, which of the following minimum size of THW copper cane be used as service conductor?

Question 24: What is permissible voltage drop in percentage for combination of both feeders and branch circuit conductors?

Question 25: The volume required for NO.14 conductors to be placed in a outlet box is ................. inch3

Question 26: The cross sectional area of the conductors permitted in a seal shall not exceed ................... percent of the cross sectional area of a rigid metal conduit of the same trade size.

Question 27: What is the minimum volume allowance required per a No 16 AWG conductor?

Question 28: When the motor nameplate is not available, which NEC table gives the full-load current for 3-phase AC induction motors?

Question 29: You install a 75 kVA, 480–208Y/120V transformer in a building. The secondary creates a separately derived system. Where should the main bonding jumper (system bond) be made?

Question 30: What is the minimum feeder or service load for cloth dryers in a dwelling unit?

Question 31: For stationary small motors rated less than .................., the branch circuit over current device — may serve as a controller.

Question 32: How many 20 Amp circuits are required for a 2500 sq.ft dwelling unit?

Question 33: The EMT conduit run in between two terminal points shall be securely fastened within ............. of a outlet box.

Question 34: When a flexible cord supply a pendant fixture in a class II location it must be indicated for ............................

Question 35: What is the minimum tap conductor ampacity which supply 30 amperes industrial heating appliance?

Question 36: A single phase 5ph , 230 volts motor has name plate full load rating of 40 amp. What is its overload protection device rating in amperes?

Question 37: The overhead clearance diagram shows a service drop crossing over different areas. Point A is above a sidewalk at the entrance to a house. Point B is above the driveway at the same house. Point C is above an alley used by delivery trucks. Which clearance is violated?

Question 38: A cord and plug device used as disconnecting means for a motor must be rated for ..................

Question 39: Metallic gas piping in a building must be bonded per 250.104(B). The bonding conductor is sized using which NEC table?

Question 40: What is the minimum power outlet required at each recreational vehicle site in an RV park?

Question 41: Cranes and hoists are covered by which NEC article?

Question 42: The primary rating of a motor-generator arc welder is 30 A with a duty cycle of 30 percentage. What is the minimum size branch circuit conductor for the welder?

Question 43: The grounding electrode conductor (GEC) connecting to a ground rod does not need to be larger than what size copper conductor?

Question 44: For conductors supplying portable signs in a dry location what is the maximum length in feet allowed?

Question 45: The full load current of 3 phase 3 HP continuous duty motor is 50 Amperes with service factor of 1.1. What is its rating of overload separator?

Question 46: When four or more fixed appliances (other than ranges, dryers, A/C, or space heating) are on a feeder, the demand factor per 220.53 allows you to use what percentage of the total connected load?

Question 47: A dwelling must have at least one dedicated branch circuit for the bathroom. What must that circuit be rated?

Question 48: What is the primary over current device rating of a 2 wire 480 V to 120 V transformer rated at 1.8 KVA?

Question 49: Enclosures, cabinets, cut boxes installed in wet locations shall be ...............

Question 50: What is the adjustment ampacity of a 3/0 THWN conductors in a wet location, if the raceway contains seven conductors in it?

Question 51: What is the maximum support interval for a 2-inch rigid metal conduit (RMC) run?

Question 52: What are the minimum heavy duty lamp holders that are permitted on 20 ampere branch circuit operated at 120 volts?

Question 53: What is the maximum voltage applied to — branch circuits that are connected to luminaries in dwelling unit?

Question 54: The outline lighting system shall be at least .............. feet above the areas accessible to vehicles unless protected from physical damage.

Question 55: The general lighting load in Volt-ampere/Sq.Foot that a church building requires is ..............

Question 56: An instantaneous-trip circuit breaker (used for motor branch circuits) has no intentional time delay. What is the main advantage of this type of breaker?

Question 57: The panel diagram shows a 120/240V panel with a multiwire branch circuit. Circuit 1 is a single-pole 20A breaker with a black wire and circuit 3 is a single-pole 20A breaker with a red wire — both share a white neutral wire. Is this panel wiring correct?

Question 58: The branch circuit over current device of the stationary motor which are rated less than ........... may serve as the controller of motor.

Question 59: What is the maximum continuous load that can be connected on a 240 volts 30 amperes circuit using two 10 AWG conductors?

Question 60: A 50 HP 460 volts three phase AC motor is supplied with THWN conductors. Which is of the following is the size of the branch circuit conductors?

Question 61: What is the general lighting unit load for a 6000 square foot hospital?

Question 62: What is the maximum constant wattage per linear meter allowed for heating cables embedded in concrete?

Question 63: The snap switches equipped in the panel boards are rated at 25 amperes, these switches must be protected not in excess of ..........................

Question 64: What must be the electrical fuse rating to protect 12 AWG Branch conductor?

Question 65: Liquidtight flexible nonmetallic conduit (LFNC) used as a flexible connection to equipment must not exceed what maximum length?

Question 66: What is general lighting unit load per square feet for hotels and guest room?

Question 67: A 75 kVA 480–208Y/120V transformer creates a separately derived system. The system bonding jumper is sized using:

Question 68: Which of the following is a over current protection rating of a 30 amperes snap switch equipped on panel board?

Question 69: Which of the following type of conductor is used to supply a 40 ampere single phase motor used for continuous duty applications?

Question 70: What is the minimum general lightening load required for 1500 square foot single family dwelling unit as permitted by NEC?

Question 71: What is the minimum size electrical service required for a single family dwelling unit?

Question 25: The volume required for NO.14 conductors to be placed in a outlet box is ................. inch³