JOURNEYMAN NEC 2023 FULL-LENGTH PRO

Michigan Journeyman Electrician Practice Test - Full-Length Test 1

A full-length, 76-question practice exam covering all 8 core NEC topic areas, weighted the same way the real exam is. Modeled on Michigan's real licensing exam format. Premium — part of Full-Length Pro.

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journeyman electrician Motors NEC Practice Tests Load Calculations Box Fill

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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 Michigan Journeyman Electrician Practice Test - Full-Length Test 1 has 76 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: 76 multiple-choice, one correct answer each

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

Question 1: Which of the following is the maximum phase to phase voltage of yard and pier distribution system?

120 volts
240 volts
600 volts
480 volts

NEC Reference: NEC 555.4

Question 2: A feeder serves two motors. The 50HP motor has a 100A branch circuit breaker and the 25HP motor has a 60A branch circuit breaker. The 25HP motor FLA is 34A. What is the maximum feeder overcurrent device size?

100A — match the largest branch circuit breaker
125A — largest breaker plus other motor FLA, capped below 134A
150A — largest breaker plus other motor FLA rounded up
160A — sum of both branch circuit breakers

NEC Reference: NEC 430.62(A)

Question 3: The — ampacity of 2/0 THHN conductor is 195 amperes ( 90⁰ C). What is the maximum allowable ampacity of 2/0 THHN conductor in a conduit with 5 other current carrying conductors?

156 amperes
136 amperes
195 amperes
185 amperes

NEC Reference: NEC 310.15(B)(3)

Question 4: Dwelling unit has a floor area of 2000 sq ft, what are the minimum number of branch circuits required for lighting load at 115 volt ?

Four 15 amp 2-wire circuit
Four 20 amp 2-wire circuit
three 15 amp 2-wire
Two 20 amp 2-wire circuit

NEC Reference: NEC 220.22

Question 5: The commercial panel schedule shows a 400A, 120/208V, 3-phase panel with a mix of continuous and non-continuous loads. The total continuous load on the panel is 240A (3-phase). What is the minimum OCPD rating for the panel feeder breaker?

240A — match the total continuous load
300A × 125% of the continuous load
320A × 133% of the continuous load
400A — always use the full panel rating

NEC Reference: NEC 215.3

Question 6: When counting equipment grounding conductors (EGCs) in a box fill calculation, how many conductor volumes do all the EGCs combined count for?

Zero — equipment grounding conductors are always ignored in box fill
One conductor volume for all EGCs combined
One conductor volume per EGC
Two conductor volumes for all EGCs combined

NEC Reference: NEC 314.16(B)(5)

Question 7: The resistance between a driven pipe or ground rod, and the earth should not exceed ............... ohms.

NEC Reference: NEC 250.84

Question 8: A 480V service has 25,000A available SCC. The minimum AIC rating of OCPDs at the service must be:

10,000A AIC
14,000A AIC
25,000A AIC or higher
No AIC rating required for service equipment

NEC Reference: NEC 110.9

Question 9: Service conductors supplying the entire one dwelling unit load can have an ampacity of .............. percentage the service rating.

NEC Reference: NEC 310.15(B)(7)

Question 10: A single phase motor 5 HP, 230 volts motor has a full load current of 50 amperes, What is its full load conductor ampacity in amperes?

62.5 amperes
75 amperes
57.5 amperes
50 amperes

NEC Reference: NEC 430.22

Question 11: In a remote subpanel (not the service), how must the neutral bus and the equipment grounding bus be connected?

They must be bonded together, same as the main service panel
They must be kept on separate buses and not connected together
Only connected together if the subpanel is in the same building
No grounding bus is needed in a subpanel

NEC Reference: NEC 250.142(B)

Question 12: What is the minimum fixture wire size that shall be permitted?

12 AWG
14 AWG
16 AWG
18 AWG

NEC Reference: NEC 402.6

Question 13: A branch circuit overcurrent device protecting a continuous load (a load that runs for 3 hours or more) must be rated at least how much compared to the load current?

100% of the continuous load
115% of the continuous load
125% of the continuous load
150% of the continuous load

NEC Reference: NEC 210.20(A)

Question 14: The pool diagram shows a wet-niche luminaire installed in the pool wall 18 inches below the waterline. What is the maximum voltage allowed between conductors for a wet-niche pool luminaire?

120V
150V
240V
No limit — the fixture listing determines the voltage

NEC Reference: NEC 680.23(B)(1)

Question 15: What is the demand factor in percentage for a non-dwelling unit with a receptacle load of 15 kVA?

50 %
75 %
90 %
82 %

NEC Reference: NEC 220.44

Question 16: After the demand factor is applied , what is the general lighting load of a hospital which is having 80,000 sq ft area?

42,000 VA
1,60,000 VA
58,000 VA
82, 000 VA

NEC Reference: NEC 220.12

Question 17: For a 200A, 120/240V service with 3/0 AWG copper service conductors, what is the minimum size copper grounding electrode conductor (GEC)?

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

NEC Reference: NEC Table 250.66

Question 18: 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 19: What is the minimum clearance of service drops of 600 volts over residential property?

10 feet
15 feet
8 feet
12 feet

NEC Reference: NEC 230.24(B)(3)

Question 20: A 2,400 sq ft single-family dwelling has the following: range 12 kW, dryer 5 kW, water heater 4.5 kW, dishwasher 1.2 kW, disposal 0.8 kW, A/C 6 kW (240V), heat 7 kW. Using the optional method (220.82), the first 10 kVA at:

50%
75%
100%
125%

NEC Reference: NEC 220.82(B)(1)

Question 21: A single phase motor 5 HP , 230 volts motor has a full load current rating is 32 amperes, What is the full load conductor size that can be used?

No 8 THWN
No 6 THWN
No 10 THWN
No 12 THWN

NEC Reference: NEC 430.22

Question 22: What is the smallest size copper wire required for a service entrance conductor supplying limited loads of a single branch circuit?

12 AWG
8 AWG
6 AWG
10 AWG

NEC Reference: NEC 230.31

Question 23: 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 24: A 1600 sq.ft dwelling unit has 16 receptacles and 15 luminaries rated 100 W each, what is the general lighting load of dwelling unit?

4800 Volt-Ampere
1600 Volt-Ampere
3200 Volt-Ampere

NEC Reference: NEC 220.12

Question 25: For a single family dwelling unit , what is the minimum allowable rating of a 3 wire service entrance conductors?

100 amperes
150 amperes
200 amperes
180 amperes

NEC Reference: NEC 230.42(B)

Question 26: What is the minimum load that is required for exterior sign or outline lightening for a commercial occupancy as per NEC?

12000 VA
18000 VA
15000 VA
21000 VA

NEC Reference: NEC 220.14(F)

Question 27: The maximum over current protection used for resistance type heating elements in electric space-heating equipment?

60 amperes
40 amperes
70 amperes
20 amperes

NEC Reference: NEC 424.22(B)

Question 28: A singe motor is driving 40 volts generator having an over current protection. if the same can also protect the generator when the generator is delivering not more than ...................... percentage of its full load current

NEC Reference: NEC 445.12

Question 29: A panel board or switch board connected to 3 phase [A,B,C] 4 wire delta connected system must have high-leg conductor terminal to the .................. phase of the switch board.

A, or First
B, or Center Phase
C or Third phase
Any Phase

NEC Reference: NEC 408.3

Question 30: The Type AC cables shall be permitted to be installed in the following locations?

Exposed work location
concealed work location
damp and wet locations
both concealed and exposed work locations

NEC Reference: NEC 320.10

Question 31: The dwelling unit consists of 5 electric cloth dryers, what is the demand load calculated ?

21250 VA
25000 VA
5000 VA

NEC Reference: NEC 220.54

Question 32: Which of the following is the smallest size fixture wire allowed?

No . 18 AWG
No . 12 AWG
No . 14 AWG
No . 20 AWG

NEC Reference: NEC 410.54(B)

Question 33: The computed load of an utilization equipment is 600 VA supplied by 600 volts branch circuit, which of the following is the minimum branch circuit ampere rating?

1.25 ampere
1 ampere
10 ampere
1.15 ampere

NEC Reference: NEC 210.19(B)(1)

Question 34: In an electrical system at what point branch circuit over current protection device should be located?

At the equipment ground location
At the end of branch circuit
At the panel board where they receive power supply
At the power outlet where power is consumed

NEC Reference: NEC 240.21

Question 35: The equipotential bonding grid for a permanently installed swimming pool must use a solid copper conductor no smaller than:

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

NEC Reference: NEC 680.26(B)(2)

Question 36: Three motors share a feeder at 460V, 3-phase — 20HP (27A FLA), 15HP (21A FLA), and 10HP (14A FLA). What is the minimum ampacity for the feeder conductors?

62A — sum of all three motor FLAs
69A × 125% of largest plus sum of the rest
78A × 125% applied to the total FLA
88A × 125% of all three motors added together

NEC Reference: NEC 430.24

Question 37: For a service or feeder calculation, how is a laundry branch circuit load (one 20A circuit) included in the calculation?

2,400 VA (20A — 120V)
1,500 VA per laundry circuit
1,000 VA flat rate per circuit
The actual appliance nameplate wattage only

NEC Reference: NEC 220.52(B)

Question 38: 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 39: Type UF cable installed as direct burial in a general outdoor location (not under a driveway or building) must have a minimum cover depth of:

12 inches
18 inches
24 inches
30 inches

NEC Reference: NEC Table 300.5

Question 40: 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 41: In a box fill calculation, a single-pole switch or duplex receptacle counts for how many conductor volumes?

Zero — devices do not count toward box fill
One conductor volume
Two conductor volumes (based on the largest conductor attached)
Four conductor volumes

NEC Reference: NEC 314.16(B)(4)

Question 42: A series-rated system uses a combination of OCPDs where a downstream breaker with a lower AIC rating is "backed up" by an upstream higher-rated breaker. What is required for this system to be code-compliant?

The downstream breaker must be at least 10,000A AIC
The combination of upstream and downstream OCPDs must be tested and listed together
Series-rated systems are never allowed under the NEC
Any combination is acceptable as long as the upstream device is 200% of the downstream

NEC Reference: NEC 240.86

Question 43: 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 44: An industrial heating appliances rated at 40 A is supplied by a tap conductor. what should be the minimum tap conductor ampacity?

20 amperes
10 amperes
30 amperes
25 amperes

NEC Reference: NEC 210.19(A)(4)

Question 45: A 30 ampere branch circuit with heavy duty lamp holders is permitted to supply fixed lightening units in .......................

single family dwelling unit
multi family dwelling unit
any occupancy
any occupancy other than dwelling unit

NEC Reference: NEC 210.23(B)

Question 46: An intersystem bonding termination (IBT) is required at each building or structure served. What is its purpose?

To provide a ground fault path for the service entrance
To give communications systems a bonding point to the building grounding electrode system
To replace the need for ground rods at the service
To connect AFCI and GFCI devices to the same ground bus

NEC Reference: NEC 250.94

Question 47: 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 48: When sizing conductors for an air conditioning condensing unit, which current value do you use?

The FLA value from Table 430.250 based on the motor horsepower
The rated-load current or branch-circuit selection current from the equipment nameplate
The locked-rotor current divided by 6
The compressor horsepower — 1.5

NEC Reference: NEC 440.6

Question 49: All conductors of a circuit must be installed in the same cord or cable expect as permitted.

True
False

NEC Reference: NEC 300.3(B)

Question 50: At which of the following percentage the demand factor for six house hold electric cloth dryers is calculated?

NEC Reference: NEC 220.54

Question 51: What is the minimum size of lighting track conductors?

12 AWG
14 AWG
16 AWG
10 AWG

NEC Reference: NEC 410.115

Question 52: At one end of the feeder the voltmeter reads 240 volts. What is minimum reading voltage in volt-meter at the outlet of lighting loads?

232.8 volts
240 volts
235 volts
228 volts

NEC Reference: NEC 215.2(A)(4)

Question 53: In no case the rating of short — circuit ground fault protective device for a single motor compressor should not exceed ..... percentage of the motor.

175 %
225 %
220 %
150 %

NEC Reference: NEC 440.22(A)

Question 54: Type NM cable (Romex) must be supported at maximum intervals of how many feet, and within how many inches of every box or cabinet?

Every 6 feet, within 6 inches of boxes
Every 4 — feet, within 12 inches of boxes
Every 10 feet, within 3 feet of boxes
Every 8 feet, within 24 inches of boxes

NEC Reference: NEC 334.30(A)

Question 55: Which of the following color is used to identify intrinsically safe conductors?

Green
yellow
red
blue

NEC Reference: NEC 504.80(C)

Question 56: Conductors run in parallel per 310.10(G) must be:

Same length, material, size, insulation, and termination method
Different sizes mixed for ampacity flexibility
Different lengths but same insulation
6 AWG minimum

NEC Reference: NEC 310.10(G)

Question 57: 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)

Question 58: Type NM cable (Romex) is NOT permitted to be installed in which of the following locations?

Inside the walls of a wood-frame house
Embedded in poured concrete or aggregate fill
In an attic space with loose insulation
In a crawl space with direct support from the floor joists

NEC Reference: NEC 334.12(A)(3)

Question 59: Which of the following is the nominal voltage of lead-acid cell?

2 volts
1.2 volts
1.7 volts
2.2 volts

NEC Reference: NEC 480.2

Question 60: A 45 kVA, 480–208Y/120V transformer has both primary and secondary overcurrent protection. The primary current works out to about 93.75A. What is the maximum size primary OCPD?

100A
125A
225A
250A

NEC Reference: NEC 450.3(B)

Question 61: EMT shall be securely fastened in place at least every ..............

10 ft
8 ft
15 ft
20 ft

NEC Reference: NEC 358.30(A)

Question 62: What size branch circuit protection is required for 20 A motor compressor connected to 240 volts single phase supply?

35 amperes
20 amperes
25 amperes
30 amperes

NEC Reference: NEC 440.22(A)

Question 63: A multi wire branch circuit may supply only .............. if it is protected by fuses.

line to line loads
line to neutral loads
receptacle loads
service loads

NEC Reference: NEC 210.4(C)

Question 64: What is the maximum continuous load that can be connected to 240 volts 20 ampere branch circuit?

16 amperes
20 amperes
14 amperes
10 amperes

NEC Reference: NEC 210.20

Question 65: What is the minimum size of 3 wire service for single dwelling with an initial load of 20 kVA or more.

100 Amperes
150 Amperes
50 Amperes
90 Amperes

NEC Reference: NEC 230.79(C)

Question 66: What is the unit load in volt ampere per square foot for stores?

2 VA
3 VA
4 VA
5 VA

NEC Reference: NEC 220.12

Question 67: The secondary voltage of a transformer connected to the impedance heating elements shall not be over .................. volts if it is not protected by GFCI.

NEC Reference: NEC 424.32

Question 68: A 30 amperes branch circuit is permitted to supply fixed lightening units in ..................

single family dwelling unit
multi family dwelling unit
Any occupancy
Any occupancy other than dwelling unit

NEC Reference: NEC 210.23

Question 69: On a 25 ampere branch circuit what is the minimum size THW conductor that can be used?

14 AWG
8 AWG
12 AWG
10 AWG

NEC Reference: NEC 310.15(B)(16)

Question 70: In calculating the load for a commercial kitchen with one electric appliance, which of the following demand factor is allowed?

100%
80%
90%
75%

NEC Reference: NEC 220.56

Question 71: Lightning protection systems must be bonded to the building electrical grounding system. Why is this required?

To improve the lightning protection system performance
To prevent dangerous voltage differences (sideflash) between the two systems during a lightning strike
So the lightning protection can use the building ground rods instead of its own
To allow the main panel breaker to trip when lightning hits

NEC Reference: NEC 250.106

Question 72: An inverse-time circuit breaker is the most common type used in branch circuit and feeder panels. What does "inverse time" mean about how it operates?

It trips instantly at any current above its rating
It trips faster at higher currents and slower at lower overcurrent levels
It trips only after a fixed time delay regardless of current level
The trip direction is reversible, meaning it can be reset from either end

NEC Reference: NEC 240.2 (Definitions)

Question 73: A hospital essential electrical system must be divided into three separate branches. What are those three branches?

Emergency, standby, and optional standby
Life safety, critical, and equipment branches
Primary, secondary, and tertiary circuits
Normal power, backup power, and UPS circuits

NEC Reference: NEC 517.30(B)(1)

Question 74: Motor branch circuit protection devices can also protect the motor against overloads.

True
False

NEC Reference: NEC 430.51

Question 75: What is the key difference between a GFCI device (210.8) and ground-fault protection of equipment (GFP per 230.95)?

They are the same thing — GFP and GFCI both trip at 5 mA
GFCI trips at ~5 mA to protect people; GFP trips at much higher currents to protect equipment
GFP trips faster than GFCI but at the same current level
GFCI is for residential; GFP is only for outdoor commercial

NEC Reference: NEC 210.8, 230.95

Question 76: Intrinsically safe wiring (Article 504) must be kept separated from non-intrinsically safe circuits. What is the minimum separation required in the same enclosure?

No separation is required if both circuits are in conduit
At least 50 mm (2 inches) or separated by a grounded metal partition
At least 6 inches at every point
They can share space as long as the IS circuit source is fused at 1A

NEC Reference: NEC 504.30(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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Michigan Journeyman Electrician Practice Test - Full-Length Test 1

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

Question 1: Which of the following is the maximum phase to phase voltage of yard and pier distribution system?

Question 2: A feeder serves two motors. The 50HP motor has a 100A branch circuit breaker and the 25HP motor has a 60A branch circuit breaker. The 25HP motor FLA is 34A. What is the maximum feeder overcurrent device size?

Question 3: The — ampacity of 2/0 THHN conductor is 195 amperes ( 900 C). What is the maximum allowable ampacity of 2/0 THHN conductor in a conduit with 5 other current carrying conductors?

Question 4: Dwelling unit has a floor area of 2000 sq ft, what are the minimum number of branch circuits required for lighting load at 115 volt ?

Question 5: The commercial panel schedule shows a 400A, 120/208V, 3-phase panel with a mix of continuous and non-continuous loads. The total continuous load on the panel is 240A (3-phase). What is the minimum OCPD rating for the panel feeder breaker?

Question 6: When counting equipment grounding conductors (EGCs) in a box fill calculation, how many conductor volumes do all the EGCs combined count for?

Question 7: The resistance between a driven pipe or ground rod, and the earth should not exceed ............... ohms.

Question 8: A 480V service has 25,000A available SCC. The minimum AIC rating of OCPDs at the service must be:

Question 9: Service conductors supplying the entire one dwelling unit load can have an ampacity of .............. percentage the service rating.

Question 10: A single phase motor 5 HP, 230 volts motor has a full load current of 50 amperes, What is its full load conductor ampacity in amperes?

Question 11: In a remote subpanel (not the service), how must the neutral bus and the equipment grounding bus be connected?

Question 12: What is the minimum fixture wire size that shall be permitted?

Question 13: A branch circuit overcurrent device protecting a continuous load (a load that runs for 3 hours or more) must be rated at least how much compared to the load current?

Question 14: The pool diagram shows a wet-niche luminaire installed in the pool wall 18 inches below the waterline. What is the maximum voltage allowed between conductors for a wet-niche pool luminaire?

Question 15: What is the demand factor in percentage for a non-dwelling unit with a receptacle load of 15 kVA?

Question 16: After the demand factor is applied , what is the general lighting load of a hospital which is having 80,000 sq ft area?

Question 17: For a 200A, 120/240V service with 3/0 AWG copper service conductors, what is the minimum size copper grounding electrode conductor (GEC)?

Question 18: 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 19: What is the minimum clearance of service drops of 600 volts over residential property?

Question 20: A 2,400 sq ft single-family dwelling has the following: range 12 kW, dryer 5 kW, water heater 4.5 kW, dishwasher 1.2 kW, disposal 0.8 kW, A/C 6 kW (240V), heat 7 kW. Using the optional method (220.82), the first 10 kVA at:

Question 21: A single phase motor 5 HP , 230 volts motor has a full load current rating is 32 amperes, What is the full load conductor size that can be used?

Question 22: What is the smallest size copper wire required for a service entrance conductor supplying limited loads of a single branch circuit?

Question 23: The outline lighting system shall be at least .............. feet above the areas accessible to vehicles unless protected from physical damage.

Question 24: A 1600 sq.ft dwelling unit has 16 receptacles and 15 luminaries rated 100 W each, what is the general lighting load of dwelling unit?

Question 25: For a single family dwelling unit , what is the minimum allowable rating of a 3 wire service entrance conductors?

Question 26: What is the minimum load that is required for exterior sign or outline lightening for a commercial occupancy as per NEC?

Question 27: The maximum over current protection used for resistance type heating elements in electric space-heating equipment?

Question 28: A singe motor is driving 40 volts generator having an over current protection. if the same can also protect the generator when the generator is delivering not more than ...................... percentage of its full load current

Question 29: A panel board or switch board connected to 3 phase [A,B,C] 4 wire delta connected system must have high-leg conductor terminal to the .................. phase of the switch board.

Question 30: The Type AC cables shall be permitted to be installed in the following locations?

Question 31: The dwelling unit consists of 5 electric cloth dryers, what is the demand load calculated ?

Question 32: Which of the following is the smallest size fixture wire allowed?

Question 33: The computed load of an utilization equipment is 600 VA supplied by 600 volts branch circuit, which of the following is the minimum branch circuit ampere rating?

Question 34: In an electrical system at what point branch circuit over current protection device should be located?

Question 35: The equipotential bonding grid for a permanently installed swimming pool must use a solid copper conductor no smaller than:

Question 36: Three motors share a feeder at 460V, 3-phase — 20HP (27A FLA), 15HP (21A FLA), and 10HP (14A FLA). What is the minimum ampacity for the feeder conductors?

Question 37: For a service or feeder calculation, how is a laundry branch circuit load (one 20A circuit) included in the calculation?

Question 38: 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 39: Type UF cable installed as direct burial in a general outdoor location (not under a driveway or building) must have a minimum cover depth of:

Question 40: 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 41: In a box fill calculation, a single-pole switch or duplex receptacle counts for how many conductor volumes?

Question 42: A series-rated system uses a combination of OCPDs where a downstream breaker with a lower AIC rating is "backed up" by an upstream higher-rated breaker. What is required for this system to be code-compliant?

Question 43: The NEC defines a continuous load as a load that is expected to continue without interruption for at least:

Question 44: An industrial heating appliances rated at 40 A is supplied by a tap conductor. what should be the minimum tap conductor ampacity?

Question 45: A 30 ampere branch circuit with heavy duty lamp holders is permitted to supply fixed lightening units in .......................

Question 46: An intersystem bonding termination (IBT) is required at each building or structure served. What is its purpose?

Question 47: 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 48: When sizing conductors for an air conditioning condensing unit, which current value do you use?

Question 49: All conductors of a circuit must be installed in the same cord or cable expect as permitted.

Question 50: At which of the following percentage the demand factor for six house hold electric cloth dryers is calculated?

Question 51: What is the minimum size of lighting track conductors?

Question 52: At one end of the feeder the voltmeter reads 240 volts. What is minimum reading voltage in volt-meter at the outlet of lighting loads?

Question 53: In no case the rating of short — circuit ground fault protective device for a single motor compressor should not exceed ..... percentage of the motor.

Question 54: Type NM cable (Romex) must be supported at maximum intervals of how many feet, and within how many inches of every box or cabinet?

Question 55: Which of the following color is used to identify intrinsically safe conductors?

Question 56: Conductors run in parallel per 310.10(G) must be:

Question 57: In class I Division 1 location, All fixed boxes and joints should be made ..............

Question 58: Type NM cable (Romex) is NOT permitted to be installed in which of the following locations?

Question 59: Which of the following is the nominal voltage of lead-acid cell?

Question 60: A 45 kVA, 480–208Y/120V transformer has both primary and secondary overcurrent protection. The primary current works out to about 93.75A. What is the maximum size primary OCPD?

Question 61: EMT shall be securely fastened in place at least every ..............

Question 62: What size branch circuit protection is required for 20 A motor compressor connected to 240 volts single phase supply?

Question 63: A multi wire branch circuit may supply only .............. if it is protected by fuses.

Question 64: What is the maximum continuous load that can be connected to 240 volts 20 ampere branch circuit?

Question 65: What is the minimum size of 3 wire service for single dwelling with an initial load of 20 kVA or more.

Question 66: What is the unit load in volt ampere per square foot for stores?

Question 67: The secondary voltage of a transformer connected to the impedance heating elements shall not be over .................. volts if it is not protected by GFCI.

Question 68: A 30 amperes branch circuit is permitted to supply fixed lightening units in ..................

Question 69: On a 25 ampere branch circuit what is the minimum size THW conductor that can be used?

Question 70: In calculating the load for a commercial kitchen with one electric appliance, which of the following demand factor is allowed?

Question 71: Lightning protection systems must be bonded to the building electrical grounding system. Why is this required?

Question 3: The — ampacity of 2/0 THHN conductor is 195 amperes ( 90⁰ C). What is the maximum allowable ampacity of 2/0 THHN conductor in a conduit with 5 other current carrying conductors?