OR: Residential Code Review (201029) - Current Electric Training

1. 200 – Industry Related Residential Version (201029)

1

Branch-circuit cable type UF is located in Article _____.

338
334
340
336

Reference: 340.1

2. 199 – Industry Related Residential Version (201029)

1

Telephone communication wires installed in a wood framed wall generally should be separated by at least _____ inch(es) from NM cable (romex) at 120 volts.

2
3
No separation is needed.
1

Reference: 800.133B

3. 198 – Industry Related Residential Version (201029)

1

In a residential closet, a junction box with 120-volt conductors is installed for the doorbell transformer. The Class 2 low voltage wires ___________.

may be run outside adjacent to the J box to provide separation
None of these statements are true
Only Class 1 low voltage wires may be ran.
may be installed in the same J box

Reference: 725.136A&B

4. 194 – Industry Related Residential Version (201029)

1

An emergency disconnecting means is required for a hot tub not less than 5 feet and within sight.

For single-family dwelling unit.
None of these statements are true
Both A and B above are true statements.
For a multifamily structure.

Reference: 680.41

5. 193 – Industry Related Residential Version (201029)

1

An outdoor hot tub requires a common bonding grid to eliminate any voltage gradient in the area. The bonding conductor must be at least a _____ AWG copper wire.

#8 solid or stranded
#10 solid or stranded
#8 solid (due to possible corrosive influences that may adversely affect stranded conductors)
None of these statements are true

Reference: 680.26B

6. 191 – Industry Related Residential Version (201029)

1

Which of the below is a true statement?

All of these statements are true
All single phase, 15 and 20 amp, 120 through 240 volt receptacles that supply an outdoor hot tub motors are required to have GFCI protection regardless of their location.
All 125 V receptacles rated 30 amperes or less and located within 10 feet of an indoor hot tub are required to be provided with GFCI protection.
All 125 V receptacle located within 20 feet of an outdoor hot tub are required to be provided with GFCI protection.

Reference: 680.22A, 680.43A

7. 189 – Industry Related Residential Version (201029)

1

A one family dwelling unit swimming double insulated pool pump motor circuit connection may be installed with _____ in the interior of the structure.

Type MC cable listed for the location
All of these Chapter 3 methods are allowed
NM cable (Romex)
Rigid Nonmetalic Conduit (PVC, RNC)

Reference: 680.21 A2

8. 188 – Industry Related Residential Version (201029)

1

Insulated service drop conductors rated 120 volts to ground with a bare grounded neutral conductor is installed over a swimming pool. They shall be a minimum of _____ feet above the water level.

25
27
10
22.5

Reference: Table 680.9A

9. 186 – Industry Related Residential Version (201029)

1

Mobile home disconnecting means shall be located not less than _____ feet above finished grade.

2
4
5
3

Reference: 550.32F

10. 185 – Industry Related Residential Version (201029)

1

The minimum size service for a mobile home in a mobile home park is _____ amperes.

100
150
200
80

Reference: 550.32C

11. 184 – Industry Related Residential Version (201029)

1

Electric ranges and clothes dryers used in mobile homes shall be ___________.

installed with the grounding conductor and the neutral bonded together
installed like in all existing dwelling units
installed with the grounded circuit conductor insulated from the grounding conductor and the metal equipment enclosures
installed with the metal equipment enclosure junction box isolated

Reference: 550.16A, 250.104

12. 183 – Industry Related Residential Version (201029)

1

Type NM cable (romex) is used as a temporary construction branch circuit. It is limited to _____ floors above grade.

Unlimited
3
4
5

Reference: 590.4C

13. 182 – Industry Related Residential Version (201029)

1

The length of a supply cord to a 120-volt rated room air-conditioner shall not exceed _____ feet.

6
3
4
10

Reference: 440.64

14. 177 – Industry Related Residential Version (201029)

1

A dwelling unit has a dishwasher connected with a cord and plug. The plug and receptacle is installed to facilitate removal for servicing or repairs and they are allowed to serve as the disconnect for this appliance if ____.

None of these statements are true
A plug and receptacle are not allowed to serve as a disconnect.
It is accessibly located in the undercounter space adjacent to the dishwasher.
It is located behind the dishwasher requiring removal to gain access.

Reference: 422.33

15. 176 – Industry Related Residential Version (201029)

1

When a gas-fired central heating furnace is installed in a dwelling unit, is a disconnect required for the 1/8 HP blower motor?

No, the disconnect would be impracticable.
Yes, unless the branch circuit breaker is within sight.
No, only if the blower motor is 1/4 HP or more.
A disconnect is not required, but recommended.

Reference: 422.31A

16. 174 – Industry Related Residential Version (201029)

1

Branch circuit conductors within _____ inches of a ballast, within the ballast compartment shall be recognized for use at temperatures not lower than 90 degree C.

4
3
1
2

Reference: 410.68

17. 173 – Industry Related Residential Version (201029)

1

Which types of luminaries (light fixtures) are permitted in clothes closets?

Surface mounted incandescents with enclosed lamps.
Recessed incandescents with enclosed lamps.
All of these statements are true
Surface mounted fluorescents.

Reference: 410.16B

18. 172 – Industry Related Residential Version (201029)

1

Which types of luminaries (light fixtures) are not permitted in clothes closets?

Pendant mounted luminaries.
All of these statements are true
Incandescents with partially enclosed lamps.
Incandescents with an open lamp.

Reference: 410.16C

19. 171 – Industry Related Residential Version (201029)

1

A large clothes closet includes an area where both sides of the clothes hanging rods are exposed and accessible in the center of the closet. This storage space is considered _____ inches on either side of the hanging rods.

6
12
24
18

Reference: 410.16C

20. 170 – Industry Related Residential Version (201029)

1

The defined space in a bathtub zone may not necessarily rise all the way up to the ceiling. In a clothes closet, the area defined as storage space rises up to _____ feet above the shelf.

3
In a clothes closet, the area defined as storage space rises to the ceiling regardless of the ceiling height.
2
4

Reference: 410.16A Figure

21. 169 – Industry Related Residential Version (201029)

1

Is it permissible to install a 15 or 20 ampere, 125 V receptacle outlet in a dwelling unit within 3 feet or more from a bathtub or shower stall?

No, not within 5 feet.
No, not within 5 feet and no further than 10 feet and GFCI protected.
No, not within 3 feet.
No, not within 5 feet and no further than 10 feet.

Reference: 406.9C

22. 168 – Industry Related Residential Version (201029)

1

A homeowner wants a track light installed over the bathtub in his residence.

None of these statements are true
This is allowed if no part of the fixture is within 8 feet of the top of the tub rim.
This is allowed if no part of the fixture is within 3 feet horizontally of the tub.
Both of these statements are true

Reference: 410.10D

23. 167 – Industry Related Residential Version (201029)

1

A 20 ampere, 120-volt receptacle installed outdoors and subject to beating rain and water runoff shall have an enclosure that is weatherproof when the attachment plug cap is inserted in ___________.

All of these statements are true
residential applications
industrial applications
commercial applications

Reference: 406.9A

24. 166 – Industry Related Residential Version (201029)

1

Receptacles rated _____ amperes or less directly connected to aluminum conductors shall be marked CO/ALR.

25
40
20
30

Reference: 406.3C

25. 165 – Industry Related Residential Version (201029)

1

Can a circuit breaker be used to switch 277 V fluorescent lighting circuits?

Yes, if they are marked SWD.
Both of these statements are true
Yes, if they are marked HID
None of these statements are true

Reference: 404.11, 240.83D

26. 162 – Industry Related Residential Version (201029)

1

The height of a circuit breaker used as a switch shall not exceed _____ above the floor.

5 feet
6 feet, 7 inches
4.5 feet
6 feet

Reference: 404.8A

27. 161 – Industry Related Residential Version (201029)

1

3-way and 4-way switches shall be wired so that all the switching is done in the ___________ conductor.

neutral
grounding
grounded
ungrounded

Reference: 404.2

28. 160 – Industry Related Residential Version (201029)

1

Flexible cord cannot be used as the ___________ wiring of a structure.

temporary
None of these statements are true
permanent
Both of these statements are true

Reference: 400.12

29. 159 – Industry Related Residential Version (201029)

1

Concealed knob & tube wiring is not allowed in the hollow space of a wall where the space ___________.

is insulated with blown-in insulation that surrounds the wire
is not ventilated
None of these statements are true
exceeds 35 degree C

Reference: 394.12

30. 158 – Industry Related Residential Version (201029)

1

Rigid Nonmetalic Conduit (RNC or PVC) is installed in a trench for a new service lateral. The local power company supplies the properly listed conduit in both gray and orange colors for the service and optics. The service lateral conduit can be ___________.

None of these statements are true
Two of these statements are true, the NEC is not clear on this.
grey colored conduit
orange colored conduit

Reference: 352.6 352.10

31. 156 – Industry Related Residential Version (201029)

1

Power conductors in type NMC cable are manufactured in copper sizes ___________.

#12-#2
#14-#4
#14-#6
#14-#2

Reference: 334.104

32. 155 – Industry Related Residential Version (201029)

1

Type NM cable (romex) is permitted to connect fluorescent light fixtures in a residence in a dropped ceiling grid without support to a maximum length of not more than _____ feet.

4
3
3.5
4.5

Reference: 334.30 B2

33. 154 – Industry Related Residential Version (201029)

1

The overall covering for type NMC cable shall be ___________.

All of these statements are true
moisture resistant
corrosion resistent
flame retardant

Reference: 334.116B

34. 152 – Industry Related Residential Version (201029)

1

A building has hallways with suspended T-bar ceilings to conceal air conditioning ducts. Open runs of NM (romex) are allowed in the dropped ceiling area if it is not used for environmental air-handling and the structure is classified as ___________.

None of these statements are true
one-family
commercial
a dental facility

Reference: 334.12A

35. 151 – Industry Related Residential Version (201029)

1

A luminaire (light fixture) weighs over 50 pounds and it is supported from an outlet box. The code requires _____.

None of these statements are true
This installation be specifically approved by the authority having jurisdiction.
An outlet box cannot be used as support of the fixture.
The fixture be independently supported unless the box is listed over 50 pounds.

Reference: 314.27A

36. 150 – Industry Related Residential Version (201029)

1

Threaded boxes not over 100 cubic inches that contain a device, shall be considered supported when 2 or more conduits on the same side are threaded into the box if each conduit is supported within _____ inches of that box.

36
18
24
30

Reference: 314.23F

37. 149 – Industry Related Residential Version (201029)

1

In a combustible wall, the front edge of an outlet box may be set back no more than _____ inches from the finished surface.

1/8
0
1/2
1/4

Reference: 314.20

38. 148 – Industry Related Residential Version (201029)

1

A #4 copper conductor used for a residential dwelling unit branch circuit with 75 degree C terminations is rated for at least _____ amperes.

100
110
85
115

Reference: Table 310.16

39. 146 – Industry Related Residential Version (201029)

1

A 400 amp, single phase, 120/240 Volt parallel run could be composed of _____.

All of these statements are true
2, 3/0 copper conductors in parallel for A phase and 2, 250 KCMIL aluminum conductors in parallel for B phase
2, 3/0 copper conductors in parallel for A phase and 2, 3/0 copper conductors in parallel for B phase
2, 250 KCMIL aluminum conductors in parallel for A phase and 2, 250 KCMIL aluminum conductors in parallel for B phase

Reference: 310.10G

40. 140 – Industry Related Residential Version (201029)

1

The smoke detectors in a home are required to be interconnected by the building department which will necessitate a signaling conductor. This can be done by running ___________ romex cable(s) between the smoke detectors.

Two separate 14-2
A 14-3
Both statements are true.
None of these statements are true

Reference: 300.3B

41. 137 – Industry Related Residential Version (201029)

1

A 400 ampere residential service is installed with 2, 200 amp panels each fed with 4/0 AL ungrounded service entrance conductors. A grounding electrode conductor is needed for the metal plumbing piping system.

1, #2 CU conductor can be ran, with a tap outside the panel with a #4 CU ran down into the second panel
2, #4 CU conductors can be ran, one from each panel
2, #2 AL conductors can be ran, one from each panel
All of these statements are true

Reference: Tab250.66, 64D1

42. 136 – Industry Related Residential Version (201029)

1

A 200 ampere residential service is installed with 4/0 AL ungrounded service entrance conductors and needs a grounding electrode conductor installed to the metal plumbing piping system. This conductor can be sized _____.

#2 AL
#6 CU
None of these statements are true
#4 AL

Reference: Tab. 250.66, 64

43. 134 – Industry Related Residential Version (201029)

1

Given a typical 200 ampere residential service, the grounding electrode conductor could be ran to the ground rods first and then to the metal water piping system if it is sized _____.

#6 AWG AL
#6 AWG CU
#4 AWG AL
#4 AWG CU

Reference: 250.64F

44. 133 – Industry Related Residential Version (201029)

1

A structure has 2 separate services supplying the building.

More than one service on a structure is never allowed.
Each service requires a separate grounding electrode system.
Only one service would require a separate grounding electrode system.
Each service can have a separate grounding electrode system as long as they are bonded together to create one system.

Reference: 250.58

45. 132 – Industry Related Residential Version (201029)

1

A supplementary electrode is installed for a lighting pole because this equipment may be subject to lightning strikes. If a ground rod is used as this supplementary electrode, how many are required?

None of these statements are true
2
1
Rods are not allowed as supplementary electrodes.

Reference: 250.54

46. 131 – Industry Related Residential Version (201029)

1

Two ground rods are installed six feet apart for a 200 ampere residential service. These ground rods can be located ___________.

None of these statements are true
Both of these statements are true
Inside the garage slab under the panel.
Outside near the foundation of the home.

Reference: 250.53

47. 130 – Industry Related Residential Version (201029)

1

Some metal water piping systems can deteriorate with time and may even end up being replaced with a nonmetallic system. This is one reason the code requires a supplemental grounding electrode as a backup. If a ground rod is used as this supplemental electrode, how many are required?

2
Rods are not allowed to supplement the piping system.
0
1 (Resistance to ground is more than 25 ohms)

Reference: 250.53

48. 128 – Industry Related Residential Version (201029)

1

If an equipment grounding conductor is installed with a feeder to a separate structure, the equipment grounding conductor shall not be bonded to the ___________.

None of these statements are true
Grounding electrode conductor
The disconnect enclosure
Grounded conductor

Reference: 250.32B

49. 127 – Industry Related Residential Version (201029)

1

If the allowable current carrying capacity of a conductor does not correspond to the rating of a standard size overcurrent device, the next larger size may be used provided the current does not exceed _____ amps.

800
600
1000
400

Reference: 240.4B

50. 126 – Industry Related Residential Version (201029)

1

For a single family dwelling, the minimum size service disconnecting means shall be _____ amperes.

60
125
100
75

Reference: 230.79C

51. 122 – Industry Related Residential Version (201029)

1

A living room in a dwelling unit has 3 entry points (doorways) into the room. What is the minimum requirement for the number of lighting outlet switches?

1
0
2, 3-way switches
3, 2 to 3-way and 1 4-way switch

Reference: 210.70A 1

52. 121 – Industry Related Residential Version (201029)

1

A wall switch in a dwelling unit can be installed ____.

Outside the room it serves
Both of these statements are true
None of these statements are true
Inside the room it serves

Reference: 210.70A

53. 120 – Industry Related Residential Version (201029)

1

Which rooms in a dwelling unit may have a receptacle outlet controlled by a switch used for lighting instead of a lighting outlet?

Dining room
Bathroom
None of these statements are true
Kitchen

Reference: 210.70A 1

54. 119 – Industry Related Residential Version (201029)

1

A dwelling unit dining room has a receptacle controlled by a wall switch instead of a lighting outlet.

This is allowed when the switch is supplied by a general purpose branch circuit and it is installed in addition to the required small appliance branch circuit.
This is allowed when the switch is supplied by the small appliance branch circuit required to serve this room.
None of these statements are true
Both A and B above are true statements.

Reference: 210.70, 52B 1

55. 117 – Industry Related Residential Version (201029)

1

In order for the required receptacle outlet in the back of a dwelling unit to serve also as the required outlet for the air-conditioning equipment on the side of the home, it must be located within _____ feet of the unit.

25
30
10
50

Reference: 210.63

56. 116 – Industry Related Residential Version (201029)

1

An air-conditioner is located at grade level on the back of a residence. A receptacle outlet is also located on the back of a residence at a deck which is 3 feet above grade, within 10 feet of the AC equipment.

This receptacle outlet can serve as the required outlet for the AC equipment.
This receptacle outlet cannot serve as the required outlet for the AC equipment. (must be on the same level)
This receptacle outlet must be marked to indicate this dual usage.
This receptacle outlet does not have to be GFCI protected.

Reference: 210.63

57. 114 – Industry Related Residential Version (201029)

1

Which receptacle outlet location is permitted but not counted as a required receptacle location?

All of these statements are true
Over 6 feet above the floor.
An outlet that is part of a luminaire (light fixture).
Inside a kitchen cabinet.

Reference: 210.52

58. 113 – Industry Related Residential Version (201029)

1

Floor boxes shall be considered to meet the requirement of the spacing receptacles on walls if they are ___________.

within 24 inches of the wall
within 36 inches of the wall
within 12 inches of the wall
within 18 inches of the wall

Reference: 210.52A 3

59. 112 – Industry Related Residential Version (201029)

1

Receptacles located over _____ feet above the floor are not counted in the required number of receptacles along the wall.

6
4
5.5.
4.5

Reference: 210.52

60. 111 – Industry Related Residential Version (201029)

1

The residential small appliance branch circuit in a kitchen area ___________.

may not include power for an electric clock receptacle in the kitchen.
may include a plug connected microwave oven receptacle installed on the countertop.
may not include a countertop microwave oven load.
may not include power for a gas-fired cooktop receptacle.

Reference: 210.52B

61. 110 – Industry Related Residential Version (201029)

1

Given an island cabinet in a dwelling unit kitchen where the countertop is flat and you can’t mount a receptacle within 20 inches above the countertop, the receptacle can be a maximum of _____ inches below the countertop and still count as one of the required outlets.

3
6
18
This receptacle is no longer required

Reference: 210.52 C2

62. 108 – Industry Related Residential Version (201029)

1

The rating of a cord and plug connected central vacuum unit assembly shall not exceed _____ percent of the branch circuit rating it is installed on.

100
50
70
80

Reference: 210.23B1

63. 107 – Industry Related Residential Version (201029)

1

Tap conductors for household cooking equipment supplied from a 50-amp branch circuit shall have an ampacity of not less than _____.

70
20
80
50

Reference: 210.19C

64. 106 – Industry Related Residential Version (201029)

1

Dwelling unit receptacle outlets shall be protected by arc-fault circuit interrupter protection ___________.

even for outside receptacles.
Even for sunroom receptacles.
even for bathroom receptacles.
None of these statements are true

Reference: 210.12B

65. 104 – Industry Related Residential Version (201029)

1

Does a duplex receptacle installed in a dwelling type occupancy for the refrigerator require GFCI protection?

No, never
Not if it is a single receptacle on the yoke installed for the refrigerator.
Yes, all kitchen receptacles
Not when it is installed on the wall behind the location for the refrigerator.

Reference: 210.8A 6

66. 103 – Industry Related Residential Version (201029)

1

In a dwelling unit, a multiwire branch circuit supplying a split-wired receptacle is required to ___________.

have a provision at the source to simultaneously disconnect all ungrounded conductors.
have a separate neutral for each ungrounded conductor.
have at least 2 neutrals.
have color coded wires to help identify.

Reference: 210.4B

67. 099 – Industry Related Residential Version (201029)

1

For each yoke or strap containing one or more devices, a ______ volume allowance is made based on the largest conductor connected to the device to calculate box fill.

No allowance is needed for devices.
Triple.
Double.
Single.

Reference: 314.16B 4

68. 098 – Industry Related Residential Version (201029)

1

What is the minimum direct burial depth of Rigid Nonmetallic Conduit (RNC/PVC) on a residential 15 amp GFCI protected circuit rated 120 volts or less?

18 inches.
12 inches.
24 inches.
6 inches.

Reference: Table 300.5

69. 096 – Industry Related Residential Version (201029)

1

In a dwelling unit, one wall switch for a light is required at each floor level of a stairway with…

10 steps or more.
8 steps or more.
7 steps or more.
6 steps or more.

Reference: 210.70A 2

70. 095 – Industry Related Residential Version (201029)

1

As a general rule, conductors of Class II wiring as for a thermostat circuit ____ placed in any enclosure, box, raceway, etc., with conductors of electric light, power, Class I, and non-power limited fire alarm circuits.

Can be if 600 volt insulation.
Can be if 300 volt insulation.
Can be.
Shall not be.

Reference: 725.136A

71. 094 – Industry Related Residential Version (201029)

1

A hydromassage bathtub…

Requires metal piping system associated with the tub shall be bonded to the electrical equipment (motor).
All of the statements are true.
Requires motor be accessible without damaging the building.
Requires all 125-volt receptacles within 6 feet be GFCI protected.

Reference: 680.71, 73, 74

72. 093 – Industry Related Residential Version (201029)

1

Which shall have ground fault circuit interrupter protection?

A hydromassage bathtub.
All of the installations require GFCI protection.
An outdoor fountain.
An indoor hot tub supplied by an outlet.

Reference: 680.43, 56A, 71

73. 092 – Industry Related Residential Version (201029)

1

An outdoor hot tub is installed…

All of these statements are true.
Requires a receptacle shall be located at least 6 feet away.
Requires a receptacle shall be located not further than 20 feet away.
Requires a receptacle to be 6' 6" or lower.

Reference: 680.22A

74. 091 – Industry Related Residential Version (201029)

1

In case someone gets stuck under water on the intake opening, an emergency shutoff or control is required for a hot tub….

And is not required for single-family dwellings.
At least 5 feet away.
All of these statements are true
Within sight of the tub.

Reference: 680.41

75. 089 – Industry Related Residential Version (201029)

1

The number 8 solid copper conductor required for swimming pool bonding in the grid can be installed with…

Indoor type water pipe clamps.
Listed pressure connectors.
Any creative fitting.
Aluminum clamps.

Reference: 680.26B, 250.8

76. 088 – Industry Related Residential Version (201029)

1

A swimming pool pump motor supplied by a receptacle 6 feet away from the inside pool wall…

Requires GFCI protection if 15 to 20-amp three phase only.
Requires GFCI protection.
Does not require GFCI protection.
Requires GFCI protection except for dwelling units.

Reference: 680.22A

77. 086 – Industry Related Residential Version (201029)

1

What is the minimum mounting height of an outdoor mobile home disconnect?

2 feet from the bottom of the enclosure to finish grade.
3 feet from the bottom of the enclosure to finish grade.
3 1/2 feet from the bottom of the enclosure to finish grade.
4 feet from the bottom of the enclosure to finish grade.

Reference: 550.32F

78. 084 – Industry Related Residential Version (201029)

1

A typical 240-volt mobile home feeder requires…

Four insulated conductors or three insulated conductors and a bare equipment grounding conductor.
None of these statements are true
Four insulated conductors.
Three insulated conductors.

Reference: 550.33B

79. 083 – Industry Related Residential Version (201029)

1

The general rule is all ____ amp 120-volt single phase receptacles used for temporary wiring shall be GFCI protected.

20
30
All of these statements are true
15

Reference: 590.6A

80. 082 – Industry Related Residential Version (201029)

1

As a general rule, the disconnecting means for air conditioning equipment shall…

Be readily accessible from the unit.
Can be installed on the unit.
Be within sight from the unit.
All of these statements are true

Reference: 440.14

81. 081 – Industry Related Residential Version (201029)

1

Dishwasher nameplate, 8 amps (Continuous Duty, 125%)… Disposal nameplate, 3 amps… (Intermittent Duty, 85%) Can these be on the same 20-amp circuit and what is the total ampacity?

No, 15 amps.
Yes, 11 amps.
Yes, 13 amps.
Yes, 12.55 amps.

Reference: 430.24

82. 080 – Industry Related Residential Version (201029)

1

Baseboard heaters…

Generally are not allowed to be installed below a receptacle outlet as per the manufacturers instructions.
May be installed below receptacle outlets if over 12 ft. long.
May be installed below receptacle outlets.
May be installed below receptacle outlets if over 15 ft. long.

Reference: 424.10 notes

83. 078 – Industry Related Residential Version (201029)

1

Which ceiling paddle fan installation meets code?

None of these statements are true
A fan less than 50 lbs. supported by an outlet box.
A fan less than 35 lbs. supported by an outlet box listed for such a use.
A fan less than 40 lbs. supported by an outlet box.

Reference: 422.18

84. 075 – Industry Related Residential Version (201029)

1

Which type of fixture is not allowed in a clothes closet?

A fluorescent with an enclosed lamp.
All of these statements are true
A fluorescent with an open lamp.
An incandescent with an enclosed lamp.

Reference: 410.16C

85. 072 – Industry Related Residential Version (201029)

1

Does a replacement of a non-grounding receptacle required be of the grounding type at all times?

Yes, and shall be connected to a grounding conductor.
Yes, and it must be GFCI protected.
No, if no grounding means exists, either non-grounding or GFCI type will do.
None of these statements are true

Reference: 406.4D

86. 070 – Industry Related Residential Version (201029)

1

As a general rule, a new installation of a snap switch….

Requires it to be grounded whether or not a metal faceplate is installed.
Is not required to be grounded.
Requires a 20-amp rated switch minimum.
Requires it to be grounded if a job specification recommends it.

Reference: 404.9B

87. 069 – Industry Related Residential Version (201029)

1

A switch needs to be located so that the operating handle when installed will not be higher than…

6 ft. 8 inches.
6 ft.
6 ft. 6 inches.
6 ft. 7 inches.

Reference: 404.8

88. 068 – Industry Related Residential Version (201029)

1

A light fixture mounted on a junction box is located near the ground for landscape lighting.

2 threaded rigid metal conduits wrench tight supported within 18" can be the sole support for the box.,Wrong:2 threaded intermediate metal conduits wrench tight supported within 18" can be the sole support for the box.
Rigid Nonmetallic Conduit (RNC or PVC) is not allowed to support a fixture.
All of these statements are true

Reference: 352.10 (I), 314.23F

89. 067 – Industry Related Residential Version (201029)

1

Rigid Nonmetallic Conduit (RNC or PVC) expands and contracts when installed outdoors. If this change is _____ or greater in a strait run between securely mounted items, expansion fittings are needed.

1 inch.
.5 inches.
Any change requires an expansion fitting.
.25 inches.

Reference: 352.44

90. 065 – Industry Related Residential Version (201029)

1

2-inch Rigid Nonmetallic Conduit (RNC or PVC) shall be supported at least every…

8 ft.
10 ft.
6 ft.
5 ft.

Reference: 352.30B

91. 063 – Industry Related Residential Version (201029)

1

A # 8 copper Nonmetallic-Sheathed Cable (romex) conductor is rated at ___ amps using the ___ column of Table 310-16.

40, 60 degree C.
50, 75 degree C.
55, 90 degree C.
None of these statements are true

Reference: 334.80, Table 310.16

92. 062 – Industry Related Residential Version (201029)

1

Flat Nonmetallic-Sheathed Cable (Romex) cannot…

Be stapled on edge.
Be secured by staples.
Be secured by straps.
Be secured by cable ties.

Reference: 334.40

93. 061 – Industry Related Residential Version (201029)

1

Where Nonmetallic-Sheathed Cable (romex) cable is installed within ___ ft. of an attic access without a permanent ladder, it shall be protected by running boards.

7
3
6
5

Reference: 334.23

94. 060 – Industry Related Residential Version (201029)

1

Where Nonmetallic-Sheathed Cable (romex) passes through a floor, it shall be protected by a conduit at least ___ inches above the floor.

8
6
5
4

Reference: 334.15B

95. 059 – Industry Related Residential Version (201029)

1

Type Nonmetallic-Sheathed Cable (romex) can be used in a residential building if it is ________ and the proper type construction.

3 floors above grade, with a basement 40% above grade
4 floors but the 1st level is a parking garage
All of these statements are true
3 floors above grade

Reference: 334.10

96. 056 – Industry Related Residential Version (201029)

1

On a single phase, 225 amp dwelling service, the minimum ungrounded (hot) conductor size is…

4/0 Copper.
83% of the service rating.
300 Kcmil Aluminum.
2/0 Copper.

Reference: 310.12A

97. 055 – Industry Related Residential Version (201029)

1

If Nonmetallic-Sheathed Cable (romex) are bundled together for longer than ___ inches, they shall be derated for allowable ampacities.

12
24
36
18

Reference: 310.15C 1

98. 053 – Industry Related Residential Version (201029)

1

In a multiwire branch circuit…

The grounded conductors (Neutrals) shall be made up so if a device is removed it will not interrupt continuity.
The ungrounded conductors (hots) shall be made up so if a device is removed it will not interrupt continuity.
None of these statements are true
Both A & B above are true.

Reference: 300.13B

99. 052 – Industry Related Residential Version (201029)

1

Raceways exposed to different temperatures…

Need to be sealed in commercial applications only.
Need to be sealed to prevent air exchange and circulation.
Need to be sealed when exposed to widely different temperatures.
Need not be sealed and needs not to be prevented.

Reference: 300.7

100. 051 – Industry Related Residential Version (201029)

1

When direct burial cable emerges from the ground, unless 30 volts or less or 20 amp residential GFCI circuits, it shall be protected by a raceway ___ inches below grade and up to ___ feet above grade.

24; 10.
18; 10.
24; 8.
18; 8.

Reference: 300.5D 1

101. 049 – Industry Related Residential Version (201029)

1

When installing Nonmetallic Sheathed Cable (Romex) through metal stud framing members…

A bushing or grommet is required in the opening.
Nonmetallic-Sheathed Cable (Romex) is not allowed in metal stud framing.
A bushing or grommet is required only for field-punched holes.
A bushing or grommet is required only for factory cut holes.

Reference: 300.4B 1

102. 048 – Industry Related Residential Version (201029)

1

When determining a proper depth of a ditch for an underground conduit.

Measure from the bottom of the ditch.
Measure from the top of the conduit.
There is no specific requirement.
Measure from the center of the conduit.

Reference: Table 300.5_notes

103. 047 – Industry Related Residential Version (201029)

1

A new installation of a branch circuit supplying a single-phase clothes dryer requires…

A 3 wire cable including an insulated neutral.
A 4 wire cable including an equipment ground.
Either A or B above.
None of these statements are true

Reference: 250.140

104. 046 – Industry Related Residential Version (201029)

1

Listed Flexible Metallic (Flex) Conduit is an approved grounding means when…

Conductors installed in the flex are rated 30 amps and on a 30 amp breaker maximum.
The total lengths of flex in a combined run are not longer than 6 feet.
The longest section of flex in a combined run is 6 feet.
All of these statements are true

Reference: 250.118 5

105. 045 – Industry Related Residential Version (201029)

1

Which is a true statement?

A metal conduit, which contains a grounding electrode conductor, needs to be bonded at both ends.
A metal conduit, which contains a grounding electrode conductor, needs to be bonded at one end only.
A metal conduit, which contains a grounding electrode conductor, does not need to be bonded.
An EMT conduit, which contains a grounding electrode conductor, needs to be bonded at one end only.

Reference: 250.64E

106. 044 – Industry Related Residential Version (201029)

1

If a made electrode (ground rod) is to be used to ground a service….

All of these statements are true
They can be driven at a 45* angle if rock is found.
If practicable, they need to be installed below moisture level.
They can, as a last resort, be buried in a 2 1/2 ft. deep ditch.

Reference: 250.53A 4

107. 043 – Industry Related Residential Version (201029)

1

Ground rods must be driven and can have…

6 inches below grade level for the clamp
2 inches above grade level for the clamp.
6 inches above grade level for the clamp
0 inches above grade level for the clamp.

Reference: 250.53A 4

108. 042 – Industry Related Residential Version (201029)

1

When a metal underground water pipe is used as an electrode…

If a rod is not 25 ohms or less, another additional rod must be used.
It must be supplemented with a ground rod.
Both of these statements are true
None of these statements are true

Reference: 250.53D 2

109. 041 – Industry Related Residential Version (201029)

1

If it is available on the job site, a metal water pipe that enters the building and is in direct contact with earth for ___ feet or more shall be connected as an electrode within ___ from emergence from the ground.

10, anywhere
10, 20 feet
5, 10 feet
5, 5 feet

Reference: 250.52A, 250.68C

110. 040 – Industry Related Residential Version (201029)

1

When an existing second building is supplied from the first, the neutral can be bonded when…

There are not metal pipes or other continuous metal paths between the buildings.
Both of these statements are true
None of these statements are true
An equipment-grounding conductor is not ran.

Reference: 250.32B ex

111. 039 – Industry Related Residential Version (201029)

1

Conductors for a feeder where the ampere rating does not match with a standard circuit breaker…

Can be used with the next higher standard breaker size.
All of these statements are true
Must be used with a breaker the next lower standard size.
Can be used with the next higher standard breaker size if it is under 800 amps.

Reference: 240.4B

112. 038 – Industry Related Residential Version (201029)

1

The minimum service entrance conductor ampacity is…

All of these statements are true
100 amps for a one family dwelling.
30 amps for a two-circuit installation.
60 amps for other loads.

Reference: 230.79

113. 037 – Industry Related Residential Version (201029)

1

Which is not an acceptable grouping of service disconnects?

2 disconnects installed together outside.
1 disconnect installed outside and 3 inside.
2 disconnects installed together inside and one 50 ft. away outside for a fire pump.
2 disconnects installed together inside.

Reference: 230.72

114. 036 – Industry Related Residential Version (201029)

1

As a general rule, overhead service weatherheads…

Can be both above or below within 30 inches of the attachment of the service drop.
Shall be above the point of attachment of the service drop.
Shall be below the point of attachment of the service drop.
Shall be at the point of attachment of the service drop.

Reference: 230.54C

115. 034 – Industry Related Residential Version (201029)

1

A house with a separate structure like a shop has one service location with one service lateral with the meter attached to the home.

Both of these statements are true
None of these statements are true
At the meter, you can have 2 disconnects grouped together outside, one for the home, the other for the shop.
You can have one disconnect at and for the home and another at and for the shop. (A meter loop.)

Reference: 230.40 ex 3

116. 032 – Industry Related Residential Version (201029)

1

Open service conductors installed on buildings require…

4 feet minimum clearance from windows.
3 feet minimum clearance from windows.
4 feet minimum clearance from windows if they can be opened.
3 feet minimum clearance from windows if they can be opened.

Reference: 230.9A

117. 030 – Industry Related Residential Version (201029)

1

Which is not a true statement of an outside feeder from one building to another?

The disconnect in (A) above must be suitable for use as service equipment.
If building #2 is supplied by more than one feeder, permanent identification is required.
A disconnect is required at building #2.
Building #2 is limited to 8 disconnects grouped in one location.

Reference: 225.31, 36, 37

118. 028 – Industry Related Residential Version (201029)

1

A wall switch for a light is required at each outdoor entry…

In dwelling, commercial and industrial buildings.
None of these statements are true
In dwelling units.
In commercial buildings.

Reference: 210.70A

119. 027 – Industry Related Residential Version (201029)

1

A required dwelling unit wall light switch for a room…

Is required within 6 feet of a doorway.
Is required within 4 feet of a doorway.
Is required within 5 feet of a doorway.
Has no specific location requirement, just near an entrance.

Reference: 210.70A

120. 026 – Industry Related Residential Version (201029)

1

An air conditioner…

All of these statements are true.
Requires an outlet on the same level for servicing it.
Requires an outlet if it is a 2 family dwelling.
Requires an outlet within 25 Ft.

Reference: 210.63

121. 025 – Industry Related Residential Version (201029)

1

If installed in an attic, does a furnace require a 15 – 20 amp rated outlet for servicing the unit?

No, only on rooftops and in crawl spaces.
Yes, accessible and on the same level within 25 ft.
No, only on rooftops within 25 ft.
Yes, but only for dwelling units.

Reference: 210.63

122. 024 – Industry Related Residential Version (201029)

1

In a guest room of hotel or motel, does the number of receptacle outlets installed need to comply as in a dwelling unit of Section 210-52?

No, that Section does not apply.
Yes, but they can be relocated because of furniture layout.
No, number of outlets is determined by customer preference.
Yes, and they need to be located as per those requirements.

Reference: 210.60 B

123. 023 – Industry Related Residential Version (201029)

1

A 1500 square foot home; what are the least # of required circuits for lighting, small appliances, and laundry, with wood heat, (at 20 amp circuits)?

6
7
8
5

Reference: 210.52, 220.41

124. 022 – Industry Related Residential Version (201029)

1

For a one family dwelling where part of the basement is finished but another portion is not….

Two additional outlets are required in the unfinished portion.
An additional outlet is not required in the unfinished portion.
An additional outlet is required in the unfinished portion.
None of these statements are true.

Reference: 210.52G

125. 021 – Industry Related Residential Version (201029)

1

Two family dwellings (duplex) require how many grade level accessible outside receptacles?

None are required.
Four, two for each unit, two in the front and the two in the back.
Two, one for each unit, one in the front and the other in the back.
One for both units.

Reference: 210.52E

126. 018 – Industry Related Residential Version (201029)

1

The two or more required kitchen 20-amp appliance circuits can include…

Pantry receptacles.
All of these statements are true.
A clock in the breakfast room.
Dining room receptacles.

Reference: 210.52B 1&2

127. 016 – Industry Related Residential Version (201029)

1

A dwelling unit small appliance branch circuit for the kitchen cannot…

Include a receptacle for a gas fired range.
Include an outside outlet.
All of these statements are true
Include a receptacle for a refrigerator.

Reference: 210.52B 2

128. 015 – Industry Related Residential Version (201029)

1

A receptacle outlet for a dwelling refrigerator….

Can be served by an individual 15-amp circuit.
Can be included on the 20-amp small appliance branch circuit.
Is not exempted from the GFCI requirements.
All of these statements are true.

Reference: 210.52B1, 210.8

129. 014 – Industry Related Residential Version (201029)

1

On a multi-family structure, which loads are permitted to be supplied from a dwelling unit?

Parking lot lighting.
None of these statements are true
Common pool wiring.
Central building security.

Reference: 210.25B

130. 013 – Industry Related Residential Version (201029)

1

What is the maximum amperage allowed in a house for a 120-volt cord and plug connected load for a 15-amp circuit?

12
13
11
10

Reference: Table 210.21B 2

131. 012 – Industry Related Residential Version (201029)

1

Given, 4 lights at 120 volts at 4.2 amps each on for over 3 hours at a time. How many minimum 20-amp circuits are needed to serve this load?

3
2
4
1

Reference: 210.20A

132. 011 – Industry Related Residential Version (201029)

1

In a dwelling unit bathroom…

All of these statements are true.
At least one 20-amp circuit is required, this 20-amp circuit shall be dedicated to supply bathroom receptacles only.
At least one 20-amp circuit is required, an exception allows other equipment within the same bathroom to be supplied by a 20-amp circuit if it is only a single bathroom.
At least one 20-amp circuit is required.

Reference: 210.11C

133. 009 – Industry Related Residential Version (201029)

1

Which does not require a GFCI protection device for a dwelling unit?

All of these require GFCI protection.
A single receptacle for a freezer in a garage.
Workbench outlet in a garage.
One duplex receptacle for a freezer in a garage.

Reference: 210.8A

134. 007 – Industry Related Residential Version (201029)

1

A branch circuit for a dwelling unit is ran out for a small storage building for an inside 120-volt outlet at grade level.

If this receptacle is 20-amp, it shall not be GFCI protected.
If this receptacle is 15-amp, it shall not be GFCI protected.
If this receptacle is 15 or 20 amp, it shall be GFCI protected
This receptacle is not required to be GFCI protected, but it is recommended.

Reference: 210.8A

135. 006 – Industry Related Residential Version (201029)

1

A multiwire branch circuit for a hot water tank using a line-to-line load requires…

Both of these statements are true
A double pole circuit breaker.
Two single pole breakers with an approved handle tie.
None of these statements are true

Reference: 240.15B, 210.4B

136. 005 – Industry Related Residential Version (201029)

1

If you use a 12-3 romex as travelers between 3-way switches with the white used to supply the switch.

None of these statements are true
The white conductor must be permanently re-identified where visible.
The white conductor shall be white with a colored green stripe.
The white conductor does not have to be re-identified.

Reference: 200.7C

137. 004 – Industry Related Residential Version (201029)

1

A neutral conductor sizes ____ or smaller shall be identified by continuous gray or white insulation.

#10.
#6.
#8.
#4.

Reference: 200.6A

138. 003 – Industry Related Residential Version (201029)

1

The minimum working space for indoor electrical equipment is from the floor to ____ feet above the equipment or structural ceiling if lower.

25
6.5
15
10

Reference: 110.26A 3

139. 002 – Industry Related Residential Version (201029)

1

When the term “In sight from” is used in the Code, what is the maximum distance permitted?

30 feet.
75 feet.
50 feet.
25 feet.

Reference: Definitions

140. 001 – Industry Related Residential Version (201029)

1

An area is considered a bathroom if…

It includes a sink and a tub.
It includes a sink and a toilet.
All of these statements are true
It includes a sink and a shower.

Reference: Definitions

(509) 488-0899

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