JOURNEYMAN NEC 2023 FULL-LENGTH PRO

California Journeyman Electrician Practice Test - Full-Length Test 1

A full-length, 93-question practice exam covering all 8 core NEC topic areas, weighted the same way the real exam is. Modeled on California'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 California Journeyman Electrician Practice Test - Full-Length Test 1 has 93 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: 93 multiple-choice, one correct answer each

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

Question 1: 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 2: In which of the following devices the delta breakers cannot be installed?

Panel boards
Conduit boxes
metal boxes
Enclosures

NEC Reference: NEC 408.36

Question 3: what is the maximum over current device rating that is allowed to placed — to protect panel board instrumentation circuit?

30 amperes
15 amperes
20 amperes
10 amperes

NEC Reference: NEC 408.52

Question 4: What is grounded service conductor size required for all-electric restaurant (120 V / 208 V three phase) which has a total connected load of 200 KVA?

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

NEC Reference: NEC 220.88

Question 5: A ground ring used as a grounding electrode must encircle the building with at least how many feet of bare copper conductor, and buried at least how deep?

At least 10 feet, buried 18 inches deep
At least 20 feet, buried 30 inches deep
At least 20 feet, buried 18 inches deep
At least 30 feet, buried 24 inches deep

NEC Reference: NEC 250.52(A)(4)

Question 6: Amusement rides or carnival rides cannot be located less than .......................... in any direction from over head lines

20 feet
15 feet
12 feet
8 feet

NEC Reference: NEC 525.5

Question 7: What is the smallest aluminium size wire that can be used as service entrance conductors?

8 AWG
6 AWG
10 AWG
12 AWG

NEC Reference: NEC 230.31(B)

Question 8: A feeder serves a heating load of 30 kW and a cooling load of 22 kW, both not in use at the same time. For service-load calculations, the value used is:

Sum of both = 52 kW
Average = 26 kW
Larger only = 30 kW
125% of larger = 37.5 kW

NEC Reference: NEC 220.60

Question 9: A feeder uses two 500 kcmil THWN conductors per phase in parallel. How must the equipment grounding conductor be sized for the parallel set?

One EGC sized for the total parallel conductor ampacity is acceptable
Each conduit must have its own EGC sized per Table 250.122 for the OCPD rating
No EGC is required when using parallel conductors of 500 kcmil or larger
The EGC size is based on the conductor size, not the OCPD rating

NEC Reference: NEC 250.122(F)

Question 10: The carried continuously in chipper bars in sheet metal auxiliary gutters shall not exceed ............... of cross section of the conductor.

1000 per inch ²
750 per inch ²
700 per inch ²
900 per inch ²

NEC Reference: NEC 366.23

Question 11: What is the minimum load for the required exterior sign or outline lighting for a commercial occupancy as per NEC?

1200 VA
1500 VA
10,00 VA
1800 VA

NEC Reference: NEC 220.14(F)

Question 12: An air conditioning system is fed from its own panel. Per Article 440, the overcurrent protection for the A/C branch circuit is determined by which rule, not just Article 240?

Article 240 ampacity rules always govern A/C circuits
Article 440 governs — the OCPD is sized per nameplate BCSC, not just conductor ampacity
Article 430 motor rules govern all A/C equipment
A/C circuits use the same sizing rules as any other appliance

NEC Reference: NEC Article 440

Question 13: What is the calculated load for a quad receptacle manufactured in a single piece of equipment to use in retails shop?

360 Volt-Ampere
720 Volt-Ampere
800 Volt-Ampere
180 Volt-Ampere

NEC Reference: NEC 210.14(I)

Question 14: The following motors are fed from a single phase motor. What size feeder protection is required for the motors?

10 HP, 230 volts three phase motor

15 HP, 230 volts three phase motor.

175 A
105 A
125 A
200 A

NEC Reference: NEC 430.250

Question 15: Dry type transformer rated more than ............... are permitted to install in hollow spaces of buildings.

50 KVA
100 KVA
85 KVA
75 KVA

NEC Reference: NEC 450.13(A)

Question 16: What is the branch circuit load calculated for show window which has horizontal size of 10 feet?

2000 V-A
1800 V-A
1600 V-A
2200 V-A

NEC Reference: NEC 220.43(A)

Question 17: In a Class I, Division 1 classified area, sealing fittings in conduit runs must be installed within how many inches of an enclosure where the conduit enters or exits?

6 inches
12 inches
18 inches
36 inches

NEC Reference: NEC 501.15(A)(1)

Question 18: A 120 volt 30 amp branch circuit supplies cord and attachment type air-conditioner, which of the following is the maximum full load current of an air-conditioner?

15 amperes
24 amperes
30 amperes
20 amperes

NEC Reference: NEC 440.52

Question 19: Which of the following is the maximum ampacity of a No 8 THWN copper conductor at temperature 75 ⁰ C?

40 A
50 A
55 A
65 A

NEC Reference: NEC 350.15(B)(16)

Question 20: When conductors run in parallel the voltage must be evenly distributed between individual conductors.

True
False

NEC Reference: NEC 310.4(B)

Question 21: What is the maximum size fuse allowed to protect 12 AWG THW copper branch conductor?

15 amperes
20 amperes
25 amperes
30 amperes

NEC Reference: NEC 240.4(D)(5)

Question 22: The over load protection must be provided for the motor if it is rated more than ............... Hp.

1/8 Hp
1/4 Hp
1/2 Hp
1 Hp

NEC Reference: NEC 430.32(A)

Question 23: A residence has six 2-wire branch circuits what is the minimum size service is required for this residence?

100 ampere for a 3 wire service
140 ampere for a 2 wire service
50 ampere for a 3 wire service
80 ampere for a 2 wire service

NEC Reference: NEC 230.79

Question 24: Three single phase motors with full load current rating of 20,30,25 amperes respectively are connected to 240 volts electrical circuit. Which of the following is the required dual element fuse size can be used for the circuit?

110 amperes
150 amperes
200 amperes
175 amperes

NEC Reference: NEC 430.52

Question 25: How many small appliance branch circuits are required at minimum for the kitchen and dining area of a single-family dwelling?

One 20A circuit
Two 20A circuits
Three 20A circuits
One 30A circuit

NEC Reference: NEC 210.11(C)(1)

Question 26: What is the smallest rating plug fuse that is used for residential 120 volts branch circuit?

15 amperes
20 amperes
12 amperes
18 amperes

NEC Reference: NEC 240.6(A)

Question 27: If 30 ampere or less snap switches are equipped in panelboards, they must be protected not in excess of:

30 amperes
150 amperes
200 amperes
225 amperes

NEC Reference: NEC 408.36(A)

Question 28: The overcurrent protection for a feeder or branch circuit must be located where the conductors receive their supply. When is it permitted to place the overcurrent device away from the supply point?

Whenever the load end breaker is close to the equipment
When one of the specific tap rule exceptions in 240.21 applies
For any feeder run longer than 25 feet
The OCPD location is always flexible — it can go anywhere in the circuit

NEC Reference: NEC 240.21(A)

Question 29: A nonautomatic arc welder has a 60% duty cycle and primary current of 50A. Table 630.11(A) gives a multiplier of 0.78 for 60% duty cycle. What is the minimum branch circuit conductor ampacity?

33A — using a 0.65 factor
39A — 50A × 0.78
44A — 50A × 0.89 (80% factor)
50A — no duty cycle reduction

NEC Reference: NEC 630.11(A)

Question 30: Which of the following conditions the conductors from different circuits can occupy the same raceway?

If the insulation rating voltage is not less than the maximum circuit voltage
If the insulating rating voltage is greater than the maximum circuit voltage
If the two circuits have same voltage
If the two circuits have same insulation rating voltage

NEC Reference: NEC 300.3(C)(1)

Question 31: The size of conductors used in over head services with out any exceptions shall not be less than ............ copper.

NO.14 AWG
NO.12 AWG
NO.10 AWG
NO.8 AWG

NEC Reference: NEC 230.23(B)

Question 32: A Quick Recovery electric heater is rated at 4500 watts 240 volts. What rating of circuit breaker is required for protecting it?

30 Amperes
25 Amperes
20 Amperes
15 Amperes

NEC Reference: NEC 422.13

Question 33: Equipment grounding conductors are identified by .............. color.

Red
Green
Grey

NEC Reference: NEC 310.12(B)

Question 34: Which of the following circuits shall not be connected to system containing trolley wires?

Circuits for lightening
Grounding wires
Ungrounded trolley wires
Bonding wires

NEC Reference: NEC 110.19

Question 35: A 440 volts motor has a full load current of 34 amperes. what size disconnecting means is required?

45 amperes
34 amperes
50 amperes
40 amperes

NEC Reference: NEC 440.12(A)(1)

Question 36: If a single dwelling family unit consists of one air conditioning unit rated at 4 KW and fixed heating equipment rated at 3 KW. What is the total dwelling unit calculated load?

4 KW
7 KW
3.5 KW
3 KW

NEC Reference: NEC 220.60

Question 37: A 3 phase 120/230 Volts Multifamily dwelling building has a total demand load of 220 KVA, What is the minimum size of service conductor that can be used for building?

600 kcmil Aluminum Wire per phase
500 kcmil Aluminum Wire per phase
550 kcmil Aluminum Wire per phase
400 kcmil Aluminum Wire per phase

NEC Reference: NEC 310.15(B)(7)

Question 38: What is the minimum ampere rating of short circuit ground fault protective device that can be used for individual motor-compressor?

12 amperes
15 amperes
20 amperes
18 amperes

NEC Reference: NEC 440.22(A)

Question 39: In a wet location, the enclosure shall be mounted that there is at least ................... airspace between enclosure and the wall.

1/4 inch
1/2 inch
3/4 inch
1 inch

NEC Reference: NEC 312.2

Question 40: What is the maximum rating of panel boards containing 30 ampere or less snap switches?

30 amperes
120 amperes
45 amperes
200 amperes

NEC Reference: NEC 408.36(A)

Question 41: Which of the following loads is NOT permitted to be connected to a small appliance branch circuit (SABC)?

A toaster plugged into a counter receptacle
A refrigerator in the kitchen
A microwave on the counter
A ceiling light fixture in the kitchen

NEC Reference: NEC 210.52(B)(2)

Question 42: What is the corrected ampacity of a 1/0 THWN conductor in wet location, if the ambient temperature of location is 40⁰ C?

123 Amperes
132 Amperes
150 Amperes
141 Amperes

NEC Reference: NEC 310.15(B)(16)

Question 43: 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 44: For a single family dwelling unit what is the minimum allowable current rating of 3-wire service-entrance conductors?

120 amperes
100 amperes
150 amperes
200 amperes

NEC Reference: NEC 230.42(B)

Question 45: A 240 volts single phase room air-conditioner rating not more than ............. can be consider as a single motor unit?

30 amperes
40 amperes
50 amperes
60 amperes

NEC Reference: NEC 440.62(A)(2)

Question 46: A 30A branch circuit can supply what types of loads?

General lighting and standard duplex receptacles
Fixed appliances where the branch circuit rating matches the appliance rating
Any load as long as the total does not exceed 30A
Motor loads only — 30A is a motor circuit rating

NEC Reference: NEC Table 210.24

Question 47: what is the receptacle calculated load for a 19000 sqft building which contains one hundred eighty 15A and 20 A , 120 V receptacles?

21,200 VA
18,000 VA
19,600 VA
23,500 VA

NEC Reference: NEC 220.14(1)

Question 48: If a service is fed by three parallel sets of 400 kcmil conductors, what is the required conductor size for GEC?

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

NEC Reference: NEC 250.166

Question 49: 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 50: What is the minimum volt ampere rating of a 110,000 square foot school?

330 KVA
220 KVA
165 KVA
440 KVA

NEC Reference: NEC 220.12

Question 51: Which of the following is the total load of a 2500 sq ft dwelling unit that has 20 receptacles and 15 luminaries each rated 100w?

7500 Volt-Amperes
11000 Volt-Amperes
9500 Volt-Amperes
12000 Volt-Amperes

NEC Reference: NEC 220.14

Question 52: Service drop conductors at the point where they enter a dwelling (over a porch or walkway accessible only to pedestrians) must be at least how many feet above the ground?

8 feet
10 feet
12 feet
15 feet

NEC Reference: NEC 230.24(B)(1)

Question 53: How many receptacles must be installed at a minimum for each patient bed in a Category 1 (critical care) patient bed location?

4 receptacles
6 receptacles
8 receptacles
12 receptacles

NEC Reference: NEC 517.18(B)

Question 54: What is the minimum volt-ampere rating included for heavy duty lamp holder?

660 volt-ampere
560 volt-ampere
460 volt-ampere
760 volt-ampere

NEC Reference: NEC 220.21(A)

Question 55: As per NEC, minimum ........................ size wire is required for overhead spas up to 50 ft.

No 8
No 10
No 6

NEC Reference: NEC 225.6(a)

Question 56: A raceway carries 6 current-carrying THWN conductors in a 40°C ambient. The 75°C ampacity from Table 310.16 must be multiplied by what combined factor?

0.80
0.88
0.70 (about)
0.65

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

Question 57: A retail shop consists of 20 15 amp duplex receptacles. which of the calculated load of duplex receptacles in retail shop?

300 volt-ampere
3600 volt-ampere
1800 volt-ampere
36000 volt-amperes.

NEC Reference: NEC 220.14(I)

Question 58: The live parts of the motor operating at 120 volts must be guarded.

True
False

NEC Reference: NEC 430.232

Question 59: What percentage of rated ampacity is allowed for each conductor when eight current carrying conductors are equipped in flexible cords?

NEC Reference: NEC 400.5(A)(3)

Question 60: All 15 or 20 amperes receptacle outlets installed in bathrooms of dwelling units must always require .............................

Non ground recetacles
water proof receptacles
protective gaurds
Ground fault circuit interceptor ( GFCI)

NEC Reference: NEC 210.8(A)(1)

Question 61: What size service conductors are required for a dwelling load with a calculated load is 190 A. The service disconnect breaker is rated at 200 A?

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

NEC Reference: NEC 310.15(B)(16)

Question 62: A 8 AWG conductor is suitable to use at maximum ............ KW supplied with a 120 volts power source?

6000
300
6
30

NEC Reference: NEC 310.15(B)(16)

Question 63: If four conductors are placed in a raceway, which of the following is the maximum allowable load current of each conductor?

80 % of ampere rating of the conductor
maximum ampere rating of the conductor
70 % of ampere rating of the conductor
60 % of ampere rating of the conductor

NEC Reference: NEC 310.15(B)(3)

Question 64: 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 65: For an electric motor rated not more than ............... horsepower, the branch circuit can server as disconnecting means.

1/2 horsepower
3/4 horsepower
1 horsepower
1/8 horsepower

NEC Reference: NEC 422.31(A)

Question 66: The maximum fill percentage allowed for conductors inside a metallic wireway is:

NEC Reference: NEC 376.22(A)

Question 67: What size of over current protection device is required for a 24 ampere continuous load where the ambient temperature is 75 ⁰C?

30 amperes
24 amperes
28 ampers
26 amperes

NEC Reference: NEC 210.20(A)

Question 68: The building entry points of underground ducts or conduits must be sealed.

False
True

NEC Reference: NEC 230.8

Question 69: When five conductors each with an ampacity of 25 A bundled through NM cable, what is the adjusted ampacity of each cable.

25 amperes
20 amperes
30 amperes
22.5 amperes

NEC Reference: NEC 310.15(B)(3)(a)

Question 70: Service entrance cables shall be supported by strops with in ................. distance of every service head.

24 inches
36 inches
12 inches
15 inches

NEC Reference: NEC 230.51(A)

Question 71: Flexible cords and cables used to power rides and equipment at carnivals and fairs must be rated for:

Light use only — carnival voltages are low
Any listed flexible cord rated for the voltage and current
Hard-usage or extra-hard-usage service
Type NM cable only — flexible cords are not allowed outdoors

NEC Reference: NEC 525.20(B)

Question 72: two mobile homes with assumed capacity of 1000 watts at 115/230 volts are connected on one feeder, what is the minimum watt per mobile home site?

1000 watts
550 watts
330 watts
500 watts

NEC Reference: NEC 550.31

Question 73: In an underground service a bare neutral conductor can be buried in the ground with out any insulation.

True
False

NEC Reference: NEC 230.30

Question 74: An electrician installs a motor according to all NEC rules, but the motor manufacturer instructions say to use a specific wiring method and conductor size that is more restrictive than what the NEC requires. Which takes precedence?

The NEC always overrides manufacturer instructions
The manufacturer installation instructions — they are part of the listing
Whichever is less expensive to install
The local building code, which supersedes both

NEC Reference: NEC 110.3(B)

Question 75: A ground ring used as a grounding electrode must use a copper conductor not smaller than what size?

6 AWG bare copper
4 AWG bare copper
2 AWG bare copper
1/0 AWG bare copper

NEC Reference: NEC 250.52(A)(4)

Question 76: Unless specifically marked, which of the following is the maximum overload protection rating of No. 16 AWG copper conductor?

15 A
7 A
20 A
10 A

NEC Reference: NEC 240.4(D)

Question 77: The branch circuit — rated circuit breaker is marked for use with No 18 AWG and supplies a continuous load of 5.6 ampere, which of the following over current protection amperage that can be used?

7 amperes
10 amperes
15 amperes
20 amperes

NEC Reference: NEC 240.4

Question 78: How many number of entrances should be provided to give access from working space about electrical equipment?

NEC Reference: NEC 110.26

Question 79: A transformer secondary in a building has a 2-wire, 240V secondary with a 50A rated secondary conductor. A feeder tap from the secondary conductor runs 15 feet to a panelboard. No OCPD is at the tap point. Under 240.21(C)(1), is this tap permitted?

Yes — transformer secondary taps have no length limit
No — 15 feet exceeds the 10-foot secondary tap rule; the 25-foot rule conditions must be checked instead
Yes — 15 feet is permitted as long as the conductors are in conduit
No — any transformer secondary must have an OCPD directly at the secondary terminals

NEC Reference: NEC 240.21(C)

Question 80: What is the minimum standard rating for fuses and inverse time circuit breakers?

10 amperes
15 amperes
20 amperes
25 amperes

NEC Reference: NEC 260.6

Question 81: What is the maximum instantaneous voltage that a low voltage lighting system cannot exceed under any load conditions?

34 volts
30 volts
38.2 volts
42.4 volts

NEC Reference: NEC 411.2

Question 82: The rating of over current protective device should ............. of the panel board rating in which it is located.

not be greater than
be 125%
be greater than
be 115%

NEC Reference: NEC 408.36

Question 83: Field installed secondary circuit winding for electrical signs of 1000 volts or less shall have a conductor size not less than .....................

18 AWG
16 AWG
14 AWG
12 AWG

NEC Reference: NEC 600.3

Question 84: Which of the following is the minimum length of raceway that the conductor ampacity adjustment factors can be applied?

24 inch
28 inch
18 inch
20 inch

NEC Reference: NEC 310.15(B)(2)(a)

Question 85: When branch circuits used at outside, the size of overhead conductors for 600 volts or less, for spans upto 50 feet, shall not be less than ............. copper.

NO 18
NO 12
NO 10
NO 8

NEC Reference: NEC 225.6(A)(1)

Question 86: The minimum headroom of the working space in front of a panelboard, switchboard, or motor control center must be at least:

6 feet
6.5 feet (2.0 m)
7 feet
8 feet

NEC Reference: NEC 110.26(A)(3)

Question 87: An all-electric restaurant has a completed load 150 KVA connected to 120/208 V three phase supply. What is the required service conductor ampacity?

444 A
333 A
416 A
577 A

NEC Reference: NEC 220.88

Question 88: What size inverse time circuit breaker is required for a 10HP, 230 volts three phase motor operated at 75⁰C?

70A
56 A
40A
30 A

NEC Reference: NEC 430.250

Question 89: Over head conductors for festoon lighting shall not be smaller than .............. .

8 AWG
6 AWG
12 AWG
10 AWG

NEC Reference: NEC 225.6(A)(2)

Question 90: What will the — branch circuit calculated load for a single 12 KW electric range in a dwelling unit?

6 KW
8 KW
12 KW
15 KW

NEC Reference: NEC 220.55

Question 91: A mechanical contractor wants to run a water supply pipe through the dedicated electrical space directly above a 200A panelboard. Is this permitted?

Yes — water pipe above the panel is fine as long as it does not drip
No — foreign systems including pipes are not permitted in the dedicated electrical space
Yes — but a drip shield must be installed above the panel
Yes — the pipe is permitted if it runs parallel to the panel, not over it

NEC Reference: NEC 110.26(F)(1)(b)

Question 92: Splices and taps can be installed in enclosures if they not fill more than ............... % of the white space with in the enclosure.

NEC Reference: NEC 312.8

Question 93: A roof-mounted A/C unit must have a disconnecting means located per 440.14 within sight from the equipment OR:

Lockable in the open position per 110.25
Painted red
Inside the air handler enclosure
Hidden behind drywall

NEC Reference: NEC 440.14

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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California Journeyman Electrician Practice Test - Full-Length Test 1

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

Question 1: Which of the following must be provided near electronic equipment which are exposed to physical damage?

Question 2: In which of the following devices the delta breakers cannot be installed?

Question 3: what is the maximum over current device rating that is allowed to placed — to protect panel board instrumentation circuit?

Question 4: What is grounded service conductor size required for all-electric restaurant (120 V / 208 V three phase) which has a total connected load of 200 KVA?

Question 5: A ground ring used as a grounding electrode must encircle the building with at least how many feet of bare copper conductor, and buried at least how deep?

Question 6: Amusement rides or carnival rides cannot be located less than .......................... in any direction from over head lines

Question 7: What is the smallest aluminium size wire that can be used as service entrance conductors?

Question 8: A feeder serves a heating load of 30 kW and a cooling load of 22 kW, both not in use at the same time. For service-load calculations, the value used is:

Question 9: A feeder uses two 500 kcmil THWN conductors per phase in parallel. How must the equipment grounding conductor be sized for the parallel set?

Question 10: The carried continuously in chipper bars in sheet metal auxiliary gutters shall not exceed ............... of cross section of the conductor.

Question 11: What is the minimum load for the required exterior sign or outline lighting for a commercial occupancy as per NEC?

Question 12: An air conditioning system is fed from its own panel. Per Article 440, the overcurrent protection for the A/C branch circuit is determined by which rule, not just Article 240?

Question 13: What is the calculated load for a quad receptacle manufactured in a single piece of equipment to use in retails shop?

Question 14: The following motors are fed from a single phase motor. What size feeder protection is required for the motors? 10 HP, 230 volts three phase motor 15 HP, 230 volts three phase motor.

Question 15: Dry type transformer rated more than ............... are permitted to install in hollow spaces of buildings.

Question 16: What is the branch circuit load calculated for show window which has horizontal size of 10 feet?

Question 17: In a Class I, Division 1 classified area, sealing fittings in conduit runs must be installed within how many inches of an enclosure where the conduit enters or exits?

Question 18: A 120 volt 30 amp branch circuit supplies cord and attachment type air-conditioner, which of the following is the maximum full load current of an air-conditioner?

Question 19: Which of the following is the maximum ampacity of a No 8 THWN copper conductor at temperature 75 0 C?

Question 20: When conductors run in parallel the voltage must be evenly distributed between individual conductors.

Question 21: What is the maximum size fuse allowed to protect 12 AWG THW copper branch conductor?

Question 22: The over load protection must be provided for the motor if it is rated more than ............... Hp.

Question 23: A residence has six 2-wire branch circuits what is the minimum size service is required for this residence?

Question 24: Three single phase motors with full load current rating of 20,30,25 amperes respectively are connected to 240 volts electrical circuit. Which of the following is the required dual element fuse size can be used for the circuit?

Question 25: How many small appliance branch circuits are required at minimum for the kitchen and dining area of a single-family dwelling?

Question 26: What is the smallest rating plug fuse that is used for residential 120 volts branch circuit?

Question 27: If 30 ampere or less snap switches are equipped in panelboards, they must be protected not in excess of:

Question 28: The overcurrent protection for a feeder or branch circuit must be located where the conductors receive their supply. When is it permitted to place the overcurrent device away from the supply point?

Question 29: A nonautomatic arc welder has a 60% duty cycle and primary current of 50A. Table 630.11(A) gives a multiplier of 0.78 for 60% duty cycle. What is the minimum branch circuit conductor ampacity?

Question 30: Which of the following conditions the conductors from different circuits can occupy the same raceway?

Question 31: The size of conductors used in over head services with out any exceptions shall not be less than ............ copper.

Question 32: A Quick Recovery electric heater is rated at 4500 watts 240 volts. What rating of circuit breaker is required for protecting it?

Question 33: Equipment grounding conductors are identified by .............. color.

Question 34: Which of the following circuits shall not be connected to system containing trolley wires?

Question 35: A 440 volts motor has a full load current of 34 amperes. what size disconnecting means is required?

Question 36: If a single dwelling family unit consists of one air conditioning unit rated at 4 KW and fixed heating equipment rated at 3 KW. What is the total dwelling unit calculated load?

Question 37: A 3 phase 120/230 Volts Multifamily dwelling building has a total demand load of 220 KVA, What is the minimum size of service conductor that can be used for building?

Question 38: What is the minimum ampere rating of short circuit ground fault protective device that can be used for individual motor-compressor?

Question 39: In a wet location, the enclosure shall be mounted that there is at least ................... airspace between enclosure and the wall.

Question 40: What is the maximum rating of panel boards containing 30 ampere or less snap switches?

Question 41: Which of the following loads is NOT permitted to be connected to a small appliance branch circuit (SABC)?

Question 42: What is the corrected ampacity of a 1/0 THWN conductor in wet location, if the ambient temperature of location is 400 C?

Question 43: Which of the following is the smallest conductor permitted for pool equipment is :

Question 44: For a single family dwelling unit what is the minimum allowable current rating of 3-wire service-entrance conductors?

Question 45: A 240 volts single phase room air-conditioner rating not more than ............. can be consider as a single motor unit?

Question 46: A 30A branch circuit can supply what types of loads?

Question 47: what is the receptacle calculated load for a 19000 sqft building which contains one hundred eighty 15A and 20 A , 120 V receptacles?

Question 48: If a service is fed by three parallel sets of 400 kcmil conductors, what is the required conductor size for GEC?

Question 49: Every commercial occupancy that is accessible to pedestrians must have at least one circuit dedicated to what?

Question 50: What is the minimum volt ampere rating of a 110,000 square foot school?

Question 51: Which of the following is the total load of a 2500 sq ft dwelling unit that has 20 receptacles and 15 luminaries each rated 100w?

Question 52: Service drop conductors at the point where they enter a dwelling (over a porch or walkway accessible only to pedestrians) must be at least how many feet above the ground?

Question 53: How many receptacles must be installed at a minimum for each patient bed in a Category 1 (critical care) patient bed location?

Question 54: What is the minimum volt-ampere rating included for heavy duty lamp holder?

Question 55: As per NEC, minimum ........................ size wire is required for overhead spas up to 50 ft.

Question 56: A raceway carries 6 current-carrying THWN conductors in a 40°C ambient. The 75°C ampacity from Table 310.16 must be multiplied by what combined factor?

Question 57: A retail shop consists of 20 15 amp duplex receptacles. which of the calculated load of duplex receptacles in retail shop?

Question 58: The live parts of the motor operating at 120 volts must be guarded.

Question 59: What percentage of rated ampacity is allowed for each conductor when eight current carrying conductors are equipped in flexible cords?

Question 60: All 15 or 20 amperes receptacle outlets installed in bathrooms of dwelling units must always require .............................

Question 61: What size service conductors are required for a dwelling load with a calculated load is 190 A. The service disconnect breaker is rated at 200 A?

Question 62: A 8 AWG conductor is suitable to use at maximum ............ KW supplied with a 120 volts power source?

Question 63: If four conductors are placed in a raceway, which of the following is the maximum allowable load current of each conductor?

Question 64: 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 65: For an electric motor rated not more than ............... horsepower, the branch circuit can server as disconnecting means.

Question 66: The maximum fill percentage allowed for conductors inside a metallic wireway is:

Question 67: What size of over current protection device is required for a 24 ampere continuous load where the ambient temperature is 75 0C?

Question 68: The building entry points of underground ducts or conduits must be sealed.

Question 69: When five conductors each with an ampacity of 25 A bundled through NM cable, what is the adjusted ampacity of each cable.

Question 70: Service entrance cables shall be supported by strops with in ................. distance of every service head.

Question 71: Flexible cords and cables used to power rides and equipment at carnivals and fairs must be rated for:

Question 14: The following motors are fed from a single phase motor. What size feeder protection is required for the motors?

10 HP, 230 volts three phase motor

15 HP, 230 volts three phase motor.

Question 19: Which of the following is the maximum ampacity of a No 8 THWN copper conductor at temperature 75 ⁰ C?

Question 42: What is the corrected ampacity of a 1/0 THWN conductor in wet location, if the ambient temperature of location is 40⁰ C?

Question 67: What size of over current protection device is required for a 24 ampere continuous load where the ambient temperature is 75 ⁰C?

Question 88: What size inverse time circuit breaker is required for a 10HP, 230 volts three phase motor operated at 75⁰C?