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

1. 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.

No separation is needed.
1
3
2

Reference: 800.133B

2. 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
may be installed in the same J box
Only Class 1 low voltage wires may be ran.
None of these statements are true

Reference: 725.136A&B

3. 197 – Industry Related Residential Version (201029)

1

A residential bathroom has a hydromassage tub with a metal pump motor, which is not double insulated. It shall be bonded with ___________ to the metal piping system.

#8 AWG solid CU
#6 AWG stranded CU
#8 AWG stranded CU
None of these statements are true

Reference: 680.74

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.
Both A and B above are true statements.
For a multifamily structure.
None of these statements are true

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.

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

Reference: 680.26B

6. 192 – Industry Related Residential Version (201029)

1

Which, if any, circuit conductors may be installed with the GFCI protected conductors in a nonmetallic raceway used for an underwater swimming pool light?

The 120 volt branch circuit (not required to be GFCI protected) used for outside lights.
Both of these statements are true
The 240 volt branch circuit for the pool pump motor without GFCI protection.
None of these statements are true

Reference: 680.23F 3

7. 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

8. 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.

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

Reference: 680.21 A2

9. 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
22.5
10
27

Reference: Table 680.9A

10. 187 – Industry Related Residential Version (201029)

1

A park trailer is intended to be used for ___________.

a permanent dwelling
seasonal use
None of these statements are true
temporary office use

Reference: 552.4

11. 186 – Industry Related Residential Version (201029)

1

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

2
5
3
4

Reference: 550.32F

12. 185 – Industry Related Residential Version (201029)

1

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

150
200
100
80

Reference: 550.32C

13. 184 – Industry Related Residential Version (201029)

1

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

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

Reference: 550.16A, 250.104

14. 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.

3
4
6
10

Reference: 440.64

15. 180 – Industry Related Residential Version (201029)

1

Electric heat cable with a conductive floor covering installed in a bathroom floor shall _____.

be only allowed in commercial structures
be prohibited
have GFCI protection
be limited to 32 volts

Reference: 424.44E

16. 175 – Industry Related Residential Version (201029)

1

If the overcurrent protective device rating is marked on the name plate of the appliance, the branch circuit overcurrent device shall be no more than _____ of the rating.

50%
125%
100%
80%

Reference: 422.11A

17. 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
2
3
1

Reference: 410.68

18. 173 – Industry Related Residential Version (201029)

1

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

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

Reference: 410.16B

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.

18
12
24
6

Reference: 410.16C

20. 168 – Industry Related Residential Version (201029)

1

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

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

Reference: 410.10D

21. 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
commercial applications
industrial applications

Reference: 406.9A

22. 165 – Industry Related Residential Version (201029)

1

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

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

Reference: 404.11, 240.83D

23. 163 – Industry Related Residential Version (201029)

1

Snap switches can be grouped or ganged in outlet boxes if voltages between adjacent switches do not exceed _____ volts.

300
250
150
400

Reference: 404.8B

24. 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.

grounded
ungrounded
grounding
neutral

Reference: 404.2

25. 160 – Industry Related Residential Version (201029)

1

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

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

Reference: 400.12

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

Reference: 394.12

27. 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 ___________.

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

Reference: 352.6 352.10

28. 157 – Industry Related Residential Version (201029)

1

A 1-inch Rigid Nonmetalic Conduit (RNC or PVC) has a field bend made with a blanket bender. The radius of the curve to the centerline shall not be less than _____ inches.

10 inches
What’s shown in Table 2, Chapter 9
7 inches
8 inches

Reference: 352.24

29. 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.

3.5
4
3
4.5

Reference: 334.30 B2

30. 154 – Industry Related Residential Version (201029)

1

The overall covering for type NMC cable shall be ___________.

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

Reference: 334.116B

31. 153 – Industry Related Residential Version (201029)

1

NMB cable (romex) is required to be protected from physical damage when exposed.

When passing through a floor the cable shall be enclosed in conduit extending at least 6 inches above the floor.
When run across the top of the truss joists in an accessible attic, the cable shall be protected by guard strips.
None of these statements are true
Two of these statements are true

Reference: 334.15B, 23

32. 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 ___________.

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

Reference: 334.12A

33. 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 _____.

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

Reference: 314.27A

34. 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.

18
36
24
30

Reference: 314.23F

35. 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.

0
1/8
1/2
1/4

Reference: 314.20

36. 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
115
110
85

Reference: Table 310.16

37. 147 – Industry Related Residential Version (201029)

1

A #4 copper conductor used for a residential dwelling unit feeder panel is rated for at least _____ amperes.

110
100
115
85

Reference: Table 310.12

38. 145 – Industry Related Residential Version (201029)

1

There are 4 separate raceways used to enclose paralleled conductors.

3 conduits shall be rigid steel and one may be rigid nonmetallic conduit (PVC).
4 conduits may be rigid steel, the code is not clear on this
None of these statements are true
2 conduits shall be rigid steel and two may be rigid nonmetallic conduit (PVC).

Reference: 310.10G

39. 144 – Industry Related Residential Version (201029)

1

NMB (romex) cable is installed in a standard 2 x 4 inch plastic nail-on junction box.

All of these statements are true
Equipment grounding conductors are also required to meet this free conductor length requirement.
A minimum of 6 inches of free conductor length is required for make-up and/or connection to devices.
The measurement of free conductor length in this junction box is taken from the back of the box where conductors emerge from the sheath.

Reference: 300.14

40. 143 – Industry Related Residential Version (201029)

1

A 24-volt landscape lighting system installed with UF cable in the yard of a residence is permitted with a minimum cover of _____ inches.

6
12
18
24

Reference: Table 300.5

41. 141 – Industry Related Residential Version (201029)

1

A new service lateral is installed 36 inches deep in a trench and it is not encased in concrete. It shall have a warning ribbon (caution tape) installed a minimum of _____ inches above the lateral conductors.

18
6
24
12

Reference: 300.5D 3

42. 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.

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

Reference: 300.3B

43. 139 – Industry Related Residential Version (201029)

1

Which is not a true statement about equipment grounding conductors?

One equipment grounding conductor may serve multiple circuits.
An equipment grounding conductor may be required to be larger than the hot wires.
Equipment grounding conductors shall be increased in size to compensate for voltage drop when the circuit conductors are.
Equipment grounding conductors may be run in parallel.

Reference: 250.122A

44. 138 – Industry Related Residential Version (201029)

1

If the service entrance conductors are 350 KCMIL copper, what is the minimum size copper grounding electrode conductor if this is the sole connection to a metal water pipe electrode?

#4
1/0
#6
#2

Reference: Tab250.66, 66A

45. 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.

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

Reference: Tab250.66, 64D1

46. 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 _____.

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

Reference: Tab. 250.66, 64

47. 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.
Only one service would require a separate grounding electrode system.
Each service requires 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

48. 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?

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

Reference: 250.54

49. 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
Inside the garage slab under the panel.
Outside near the foundation of the home.
Both of these statements are true

Reference: 250.53

50. 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?

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

Reference: 250.53

51. 129 – Industry Related Residential Version (201029)

1

The electrical service for a small building is grounded to an existing underground metal water pipe where it enters the structure. This location has no other electrodes available. What is the minimum number of driven ground rods that are required for a supplementary grounding electrode?

0
2
The supplementary rod is recommended only.
1 (resistance to ground is more than 25 ohms)

Reference: 250.53D 2

52. 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

53. 126 – Industry Related Residential Version (201029)

1

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

75
60
100
125

Reference: 230.79C

54. 125 – Industry Related Residential Version (201029)

1

Service conductors that run above the top level of a window shall be permitted to be less than the _____ foot requirement.

3
6
8
4

Reference: 230.9A

55. 124 – Industry Related Residential Version (201029)

1

An outbuilding on residential property is wired with one 20 ampere, 120-volt feeder for lighting and outlets.

The required disconnecting means shall be located near the point of entry.
A snap switch is allowed for the required disconnecting means.
No disconnecting means is required for this situation.
The required disconnecting means shall be red.

Reference: 225.36

56. 123 – Industry Related Residential Version (201029)

1

The height of a wall switch for a lighting outlet in a dwelling unit can be no more than _____.

4 feet
5 feet
6 feet
6 feet 7 inches

Reference: 404.8 A

57. 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

58. 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?

Bathroom
None of these statements are true
Kitchen
Dining room

Reference: 210.70A 1

59. 118 – Industry Related Residential Version (201029)

1

A homeowner wants an occupancy sensor installed in his home office for lighting.

This is allowed if the occupancy sensor replaces the wall switch if it is equipped with a manual override that allows it to function as a wall switch.
Both of these statements are true
None of these statements are true
This is allowed for one mounted on the ceiling if a wall switch is also installed.

Reference: 210.70A 1

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

Reference: 210.63

61. 115 – Industry Related Residential Version (201029)

1

A receptacle outlet must be installed at an accessible location for servicing rooftop heat pump equipment in ___________.

two family dwellings
All of these statements are true
one family dwellings
commercial buildings

Reference: 210.63

62. 114 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.52

63. 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 36 inches of the wall
within 24 inches of the wall
within 12 inches of the wall
within 18 inches of the wall

Reference: 210.52A 3

64. 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.

4.5
4
6
5.5.

Reference: 210.52

65. 111 – Industry Related Residential Version (201029)

1

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

may not include power for a gas-fired cooktop receptacle.
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.

Reference: 210.52B

66. 109 – Industry Related Residential Version (201029)

1

In dwelling unit bathrooms, at least one receptacle outlet shall be installed within _____ inches of the outside edge of each basin.

18
48
36
24

Reference: 210.52D

67. 106 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.12B

68. 105 – Industry Related Residential Version (201029)

1

A dwelling unit has a single bathroom roughed in with a dedicated 20-ampere branch circuit which serves an outlet, light and exhaust fan in that room.

This is allowed.
This is not allowed by code.
A 15-ampere branch circuit is also allowed.
None of these statements are true

Reference: 210.11C 3 ex

69. 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 when it is installed on the wall behind the location for the refrigerator.
Yes, all kitchen receptacles
Not if it is a single receptacle on the yoke installed for the refrigerator.

Reference: 210.8A 6

70. 102 – Industry Related Residential Version (201029)

1

A 10-2 romex is used as a 240-volt branch circuit for a hot water tank. The white insulated conductor shall be re-identified as a hot ungrounded conductor at the terminations.

None of these statements are true
This can be done with black phase tape.
This can be done with a black felt pen marker.
Both of these statements are true

Reference: 200.7C

71. 100 – Industry Related Residential Version (201029)

1

Flexible Metal Conduit (FMC or Flex) can be used in a wet location if…

Flexible metal conduit cannot be used in a wet location.
The branch circuit conductors are rated for a wet location.
The run prevents water from entering the enclosure.
None of these statements are true

Reference: 348.12

72. 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.

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

Reference: 314.16B 4

73. 097 – Industry Related Residential Version (201029)

1

As a general rule, unless an exception is met, when one structure is fed from another…

Only one feeder is allowed.
Two feeders are allowed if identified.
Up to three are allowed if identified.
There is no specific restriction on the number of feeders allowed.

Reference: 225.30

74. 093 – Industry Related Residential Version (201029)

1

Which shall have ground fault circuit interrupter protection?

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

Reference: 680.43, 56A, 71

75. 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….

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

Reference: 680.41

76. 090 – Industry Related Residential Version (201029)

1

Which is not a requirement for swimming pool bonding?

The bonding conductor shall be attached to the remote service equipment.
The bonding conductor shall be attached to the electrode.
The bonding conductor shall be attached to the remote panelboard.
All of these statements are true

Reference: 680.26

77. 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

78. 087 – Industry Related Residential Version (201029)

1

The junction “deck box” for a no-niche luminaire (lighting fixture) for a swimming pool shall…

Not be less than 8 inches above pool water level.
Not be less than 4 inches above ground level.
Not be located in a walkway without protection.
All of these statements are true

Reference: 680.24A2

79. 084 – Industry Related Residential Version (201029)

1

A typical 240-volt mobile home feeder requires…

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

Reference: 550.33B

80. 078 – Industry Related Residential Version (201029)

1

Which ceiling paddle fan installation meets code?

A fan less than 40 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 50 lbs. supported by an outlet box.
None of these statements are true

Reference: 422.18

81. 077 – Industry Related Residential Version (201029)

1

Recessed fixtures (can lights)…

Can have thermal insulation installed next to the ballast if it is not installed within 2 inches
None of these statements are true
Can have thermal insulation installed next to the enclosure or ballast.
Can have thermal insulation installed next to the enclosure or ballast if identified suitable for direct contact (IC type).

Reference: 410.116A&B

82. 074 – Industry Related Residential Version (201029)

1

No hanging luminaries (light fixtures), track lights, or ceiling fans are allowed over a bathtub within ___ feet horizontally and ___ feet vertically of the tub rim.

2, 6.
3, 6.
3, 8.
2, 8.

Reference: 410.10D

83. 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.
No, if no grounding means exists, either non-grounding or GFCI type will do.
None of these statements are true
Yes, and it must be GFCI protected.

Reference: 406.4D

84. 071 – Industry Related Residential Version (201029)

1

On a circuit, a 2-wire non-grounding existing receptacle is replaced with a GFCI type. It needs to be marked…

Not grounded.
No Grounded Conductor
No Equipment Ground.
GFCI Protected.

Reference: 406.4D

85. 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.
Requires it to be grounded if a job specification recommends it.
Requires a 20-amp rated switch minimum.
Is not required to be grounded.

Reference: 404.9B

86. 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. 7 inches.
6 ft. 6 inches.

Reference: 404.8

87. 068 – Industry Related Residential Version (201029)

1

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

All of these statements are true
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.

Reference: 352.10 (I), 314.23F

88. 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.
Any change requires an expansion fitting.
.5 inches.
.25 inches.

Reference: 352.44

89. 066 – Industry Related Residential Version (201029)

1

When installing a (RNC or PVC) Rigid Nonmetallic Conduit expansion joint…

All of these statements sound like good ideas.
If installing in direct sunlight, compensate for temperature.
Do not install it all the way open or closed, compensate for today's temperature.
If installing it on a vertical run, put the joint down so water won't run down inside.

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. 064 – Industry Related Residential Version (201029)

1

Flexible Metal Conduit (FMC or Flex) may have up to ____ quarter bends per run.

3
6
5
4

Reference: 348.24B

92. 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.

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

Reference: 334.80, Table 310.16

93. 062 – Industry Related Residential Version (201029)

1

Flat Nonmetallic-Sheathed Cable (Romex) cannot…

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

Reference: 334.40

94. 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.

3
6
7
5

Reference: 334.23

95. 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.

5
8
6
4

Reference: 334.15B

96. 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
All of these statements are true
3 floors above grade, with a basement 40% above grade
4 floors but the 1st level is a parking garage

Reference: 334.10

97. 058 – Industry Related Residential Version (201029)

1

A (RNC or PVC) Rigid Nonmetallic Conduit is installed as a sleeve or chase from a surface mounted panelboard, which does not penetrate a structural ceiling. “Jack Piping”

None of these statements are true
This conduit shall not be less than 12 inches in length.
Nonmetallic-Sheathed Cable (romex) is allowed to be installed in this raceway.
This conduit can be 20 feet in length.

Reference: 312.5C

98. 057 – Industry Related Residential Version (201029)

1

What is the smallest size aluminum AWG size you could use for a 300-ampere residential service installation?

400 KCMIL.
250 KCMIL.
500 KCMIL.
83% of the service rating.

Reference: 310.12A

99. 056 – Industry Related Residential Version (201029)

1

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

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

Reference: 310.12A

100. 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.

36
12
18
24

Reference: 310.15C 1

101. 054 – Industry Related Residential Version (201029)

1

Nonmetallic Sheathed Cable (romex) installed in a residential dwelling unit…

Can be installed perpendicular to the long dimension of an air handling space.
None of these statements are true
Cannot be installed in the long dimension of an air handling space.
Both of these statements are true

Reference: 300.22C_ex

102. 053 – Industry Related Residential Version (201029)

1

In a multiwire branch circuit…

The ungrounded conductors (hots) shall be made up so if a device is removed it will not interrupt continuity.
The grounded conductors (Neutrals) 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

103. 049 – Industry Related Residential Version (201029)

1

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

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

Reference: 300.4B 1

104. 047 – Industry Related Residential Version (201029)

1

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

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

Reference: 250.140

105. 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.
They can, as a last resort, be buried in a 2 1/2 ft. deep ditch.
If practicable, they need to be installed below moisture level.

Reference: 250.53A 4

106. 042 – Industry Related Residential Version (201029)

1

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

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

Reference: 250.53D 2

107. 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.

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

Reference: 250.52A, 250.68C

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

Reference: 240.4B

109. 037 – Industry Related Residential Version (201029)

1

Which is not an acceptable grouping of service disconnects?

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

Reference: 230.72

110. 036 – Industry Related Residential Version (201029)

1

As a general rule, overhead service weatherheads…

Shall be at the point of attachment of the service drop.
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.

Reference: 230.54C

111. 035 – Industry Related Residential Version (201029)

1

Service entrance conductors…

Cannot be spliced.
Cannot be spliced unless the authority having jurisdiction gives express permission.
None of these statements are true
Can be spliced.

Reference: 230.46

112. 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.

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

Reference: 230.40 ex 3

113. 032 – Industry Related Residential Version (201029)

1

Open service conductors installed on buildings require…

4 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.
3 feet minimum clearance from windows.

Reference: 230.9A

114. 031 – Industry Related Residential Version (201029)

1

An outside pole light…

Requires a lockout at the panel.
None of these statements are true
Requires a disconnect on or at the pole.
Does not require a disconnect on or at the pole.

Reference: 225.31 ex 4

115. 030 – Industry Related Residential Version (201029)

1

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

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

Reference: 225.31, 36, 37

116. 029 – Industry Related Residential Version (201029)

1

A dwelling lighting load demand factor is ____ % for 3001 to 120,000 watts.

40
25
50
35

Reference: Table 220.45

117. 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.
In dwelling units.
In commercial buildings.
None of these statements are true

Reference: 210.70A

118. 027 – Industry Related Residential Version (201029)

1

A required dwelling unit wall light switch for a room…

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

Reference: 210.70A

119. 026 – Industry Related Residential Version (201029)

1

An air conditioner…

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

Reference: 210.63

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

Reference: 210.60 B

121. 022 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.52G

122. 021 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.52E

123. 020 – Industry Related Residential Version (201029)

1

In a dwelling unit bathroom, a receptacle is required on the wall next to the sink within…

36 inches.
18 inches.
12 inches.
24 inches.

Reference: 210.52D

124. 019 – Industry Related Residential Version (201029)

1

In a dwelling unit kitchen where the exception allows a receptacle to be installed below the countertop, to count, the counter lip shall extend no more than ___ beyond the counter.

10 inches.
12 inches.
This no longer counts.
8 inches.

Reference: 210.52C 3

125. 018 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.52B 1&2

126. 017 – Industry Related Residential Version (201029)

1

A GFCI protected 20-amp small appliance branch circuit…

All of these statements are true
May serve more than one kitchen.
May not serve more than one kitchen.
May serve more than one but it is not recommended.

Reference: 210.52B 3

127. 016 – Industry Related Residential Version (201029)

1

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

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

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

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
Central building security.
Common pool wiring.

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?

13
12
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?

4
2
3
1

Reference: 210.20A

132. 010 – Industry Related Residential Version (201029)

1

In a dwelling unit, the washing machine shall _____.

None of these statements are true
Both of these statements are true
be installed on a separate 20-amp circuit.
be installed on a separate 20-amp circuit and this circuit can serve laundry receptacle outlets in the laundry room.

Reference: 210.11C

133. 009 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.8A

134. 008 – Industry Related Residential Version (201029)

1

In a dwelling garage, a non-GFCI outlet installed for a Central Vacuum system shall be…

A duplex receptacle.
Installed at least 7' above the floor.
Marked "not GFCI protected.
Now not allowed, it must be GFCI protected.

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…

A double pole circuit breaker.
Both of these statements are true
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 does not have to be re-identified.
The white conductor must be permanently re-identified where visible.
The white conductor shall be white with a colored green stripe.

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.
#8.
#6.
#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.

6.5
25
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?

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

Reference: Definitions

(509) 488-0899

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