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 _____.

336
340
338
334

Reference: 340.1

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 ___________.

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

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.

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

Reference: 680.74

4. 195 – Industry Related Residential Version (201029)

1

For an indoor hot tub installation, a ceiling fan must be GFCI protected if it is located less than _____ feet above or _____ feet horizontally from the tub.

12, 5
None of these statements are true
14, 5
7 feet, 5 feet

Reference: 680.43B 1

5. 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.
None of these statements are true
For a multifamily structure.

Reference: 680.41

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

Reference: 680.26B

7. 190 – Industry Related Residential Version (201029)

1

For an outdoor hot tub, a 125 V, 15 or 20 ampere receptacle shall be located not less than _____ feet or more than _____ feet from the inside wall of the tub or more than _____ feet above the level of the tub.

10, 15, 6.5
5, 10, 2005
6, 20, 6.5
10, 20, 10

Reference: 680.22A 1

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.

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

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.

27
22.5
10
25

Reference: Table 680.9A

10. 187 – Industry Related Residential Version (201029)

1

A park trailer is intended to be used for ___________.

None of these statements are true
a permanent dwelling
seasonal use
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.

3
2
4
5

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
80
100

Reference: 550.32C

13. 184 – Industry Related Residential Version (201029)

1

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

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 grounding conductor and the neutral bonded together
installed with the metal equipment enclosure junction box isolated

Reference: 550.16A, 250.104

14. 181 – Industry Related Residential Version (201029)

1

An owner of a nice home wants to install a walk-in freezer in his garage area. It has an evaporator fan motor inside.

None of these statements are true
Two of these statements are true
The disconnecting means if required is to be visible, within sight, and not more than 50 feet away.
Unless the installation is covered by either of the exceptions, a disconnecting means if required for the evaporator motor.

Reference: 430.102, 440.14

15. 180 – Industry Related Residential Version (201029)

1

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

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

Reference: 424.44E

16. 179 – Industry Related Residential Version (201029)

1

A residence is installing a new heating load of 28,000 watts in base board heaters on a 240-volt circuits. They are on more than 3 hours at a time so the actual continuous duty load is 35,000 watts (125%). The minimum number of 30 ampere branch circuits to supply these heaters is _____.

5
7
6
8

Reference: 424.4

17. 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 ____.

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

Reference: 422.33

18. 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%
100%
125%
80%

Reference: 422.11A

19. 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.

2
1
3
4

Reference: 410.68

20. 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

21. 172 – Industry Related Residential Version (201029)

1

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

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

Reference: 410.16C

22. 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.

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

Reference: 410.16A Figure

23. 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.
This is allowed if no part of the fixture is within 8 feet of the top of the tub rim.
None of these statements are true
Both of these statements are true

Reference: 410.10D

24. 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 ___________.

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

Reference: 406.9A

25. 166 – Industry Related Residential Version (201029)

1

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

20
25
40
30

Reference: 406.3C

26. 162 – Industry Related Residential Version (201029)

1

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

6 feet, 7 inches
5 feet
6 feet
4.5 feet

Reference: 404.8A

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 ___________.

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

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

Reference: 352.24

29. 156 – Industry Related Residential Version (201029)

1

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

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

Reference: 334.104

30. 153 – Industry Related Residential Version (201029)

1

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

None of these statements are true
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.
Two of these statements are true

Reference: 334.15B, 23

31. 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
a dental facility
commercial
one-family

Reference: 334.12A

32. 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

33. 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
30
36
24

Reference: 314.23F

34. 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.

1/2
0
1/4
1/8

Reference: 314.20

35. 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.

85
100
115
110

Reference: Table 310.16

36. 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.

85
100
115
110

Reference: Table 310.12

37. 146 – Industry Related Residential Version (201029)

1

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

2, 250 KCMIL aluminum 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, 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
All of these statements are true

Reference: 310.10G

38. 145 – Industry Related Residential Version (201029)

1

There are 4 separate raceways used to enclose paralleled conductors.

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).
3 conduits shall be rigid steel and one 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.

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

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.

18
24
12
6

Reference: Table 300.5

41. 142 – Industry Related Residential Version (201029)

1

What is the minimum burial depth of a Rigid Nonmetalic Conduict (PVC) when it is encased by 3 inches of concrete when it is ran under a road?

The code is not really clear on this one, 24 inches is allowed.
18 inches
0 inches
6 inches

Reference: Table 300.5

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.

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

Reference: 300.3B

43. 139 – Industry Related Residential Version (201029)

1

Which is not a true statement about equipment grounding conductors?

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

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?

#6
#4
1/0
#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
2, #4 CU conductors can be ran, one from each panel
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

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
#6 CU
#4 AL
#2 AL

Reference: Tab. 250.66, 64

47. 135 – Industry Related Residential Version (201029)

1

The grounding electrode conductor generally shall be installed without a splice, but ___________.

None of these statements are true
A 2-barrel lug can be used.
An irreversible compression connector can be used.
A split bolt can be used.

Reference: 250.64C

48. 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 _____.

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

Reference: 250.64F

49. 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 can have a separate grounding electrode system as long as they are bonded together to create one system.
Each service requires a separate grounding electrode system.
Only one service would require a separate grounding electrode system.

Reference: 250.58

50. 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?

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

Reference: 250.54

51. 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
Outside near the foundation of the home.
Inside the garage slab under the panel.

Reference: 250.53

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 ___________.

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

Reference: 250.32B

53. 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.

6
4
3
8

Reference: 230.9A

54. 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.

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

Reference: 225.36

55. 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
6 feet 7 inches
5 feet
6 feet

Reference: 404.8 A

56. 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

57. 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.

10
30
25
50

Reference: 210.63

58. 115 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.63

59. 114 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.52

60. 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 18 inches of the wall
within 12 inches of the wall

Reference: 210.52A 3

61. 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.

5.5.
4.5
6
4

Reference: 210.52

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

Reference: 210.52B

63. 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.

18
3
6
This receptacle is no longer required

Reference: 210.52 C2

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

Reference: 210.12B

65. 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 at least 2 neutrals.
have a separate neutral for each ungrounded conductor.
have color coded wires to help identify.

Reference: 210.4B

66. 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.

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

Reference: 200.7C

67. 100 – Industry Related Residential Version (201029)

1

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

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

Reference: 348.12

68. 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.
Single.
Double.

Reference: 314.16B 4

69. 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

70. 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.
Up to three are allowed if identified.
Two feeders are allowed if identified.
There is no specific restriction on the number of feeders allowed.

Reference: 225.30

71. 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.

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

Reference: 725.136A

72. 094 – Industry Related Residential Version (201029)

1

A hydromassage bathtub…

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

Reference: 680.71, 73, 74

73. 093 – Industry Related Residential Version (201029)

1

Which shall have ground fault circuit interrupter protection?

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

Reference: 680.43, 56A, 71

74. 090 – Industry Related Residential Version (201029)

1

Which is not a requirement for swimming pool bonding?

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
The bonding conductor shall be attached to the remote service equipment.

Reference: 680.26

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…

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

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…

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

Reference: 680.22A

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

Reference: 680.24A2

78. 086 – Industry Related Residential Version (201029)

1

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

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

Reference: 550.32F

79. 085 – Industry Related Residential Version (201029)

1

An outside mobile home disconnect shall…

Be within sight of the home.
Be within 30 feet of the home.
Be within 40 feet.
A disconnect is not required for a mobile home.

Reference: 550.32A

80. 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
Three insulated conductors.
Four insulated conductors.

Reference: 550.33B

81. 082 – Industry Related Residential Version (201029)

1

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

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

Reference: 440.14

82. 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?

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

Reference: 430.24

83. 080 – Industry Related Residential Version (201029)

1

Baseboard heaters…

May be installed below receptacle outlets.
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 if over 15 ft. long.

Reference: 424.10 notes

84. 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

85. 073 – Industry Related Residential Version (201029)

1

Which installation does not require a receptacle cover in a wet location that is weatherproof even with the plug cap inserted? (A bubble type cover)

A vending machine.
An attended portable drill motor with a 30 ampere, 250 volt receptacle.
A RV plugged in for six months.
A pump motor.

Reference: 406.9A

86. 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…

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

Reference: 406.4D

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

Reference: 404.9B

88. 068 – Industry Related Residential Version (201029)

1

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

Rigid Nonmetallic Conduit (RNC or PVC) is not allowed to support a fixture.
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.
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.
Any change requires an expansion fitting.
.5 inches.
.25 inches.

Reference: 352.44

90. 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.
Do not install it all the way open or closed, compensate for today's temperature.
If installing in direct sunlight, compensate for temperature.
If installing it on a vertical run, put the joint down so water won't run down inside.

Reference: 352.44

91. 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

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.

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

Reference: 334.80, Table 310.16

93. 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

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
5
7

Reference: 334.23

95. 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 can be 20 feet in length.
This conduit shall not be less than 12 inches in length.
Nonmetallic-Sheathed Cable (romex) is allowed to be installed in this raceway.

Reference: 312.5C

96. 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.
83% of the service rating.
500 KCMIL.

Reference: 310.12A

97. 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.
4/0 Copper.
300 Kcmil Aluminum.
83% of the service rating.

Reference: 310.12A

98. 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.

24
36
18
12

Reference: 310.15C 1

99. 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

100. 053 – Industry Related Residential Version (201029)

1

In a multiwire branch circuit…

Both A & B above are true.
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

Reference: 300.13B

101. 052 – Industry Related Residential Version (201029)

1

Raceways exposed to different temperatures…

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

Reference: 300.7

102. 050 – Industry Related Residential Version (201029)

1

Given an underground service lateral from a power company transformer to a customer owned service that you need to install.

If not encased in concrete, a warning ribbon must be placed in the trench along side with the installation.
If not encased in concrete, a warning ribbon must be placed in the trench at least 12 inches above the installation.
None of these statements are true
If not encased in concrete, a warning ribbon must be placed in the trench at least 6 inches above the installation.

Reference: 300.5D 3

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

Reference: 300.4B 1

104. 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.
There is no specific requirement.
Measure from the top of the conduit.
Measure from the center of the conduit.

Reference: Table 300.5_notes

105. 047 – Industry Related Residential Version (201029)

1

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

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

Reference: 250.140

106. 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 longest section of flex in a combined run is 6 feet.
The total lengths of flex in a combined run are not longer than 6 feet.
All of these statements are true

Reference: 250.118 5

107. 045 – Industry Related Residential Version (201029)

1

Which is a true statement?

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

Reference: 250.64E

108. 044 – Industry Related Residential Version (201029)

1

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

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.
All of these statements are true
They can be driven at a 45* angle if rock is found.

Reference: 250.53A 4

109. 043 – Industry Related Residential Version (201029)

1

Ground rods must be driven and can have…

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

Reference: 250.53A 4

110. 042 – Industry Related Residential Version (201029)

1

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

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

Reference: 250.53D 2

111. 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, 20 feet
10, anywhere
5, 10 feet
5, 5 feet

Reference: 250.52A, 250.68C

112. 040 – Industry Related Residential Version (201029)

1

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

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

Reference: 250.32B ex

113. 038 – Industry Related Residential Version (201029)

1

The minimum service entrance conductor ampacity is…

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

Reference: 230.79

114. 037 – Industry Related Residential Version (201029)

1

Which is not an acceptable grouping of service disconnects?

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

Reference: 230.72

115. 036 – Industry Related Residential Version (201029)

1

As a general rule, overhead service weatherheads…

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

Reference: 230.54C

116. 035 – Industry Related Residential Version (201029)

1

Service entrance conductors…

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

Reference: 230.46

117. 031 – Industry Related Residential Version (201029)

1

An outside pole light…

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

Reference: 225.31 ex 4

118. 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.
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.

Reference: 225.31, 36, 37

119. 029 – Industry Related Residential Version (201029)

1

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

35
40
25
50

Reference: Table 220.45

120. 028 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.70A

121. 026 – Industry Related Residential Version (201029)

1

An air conditioner…

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

Reference: 210.63

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

Reference: 210.63

123. 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?

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

Reference: 210.60 B

124. 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
8
5
7

Reference: 210.52, 220.41

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

Reference: 210.52G

126. 020 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.52D

127. 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

128. 017 – Industry Related Residential Version (201029)

1

A GFCI protected 20-amp small appliance branch circuit…

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

Reference: 210.52B 3

129. 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 gas fired range.
Include an outside outlet.
Include a receptacle for a refrigerator.

Reference: 210.52B 2

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?

10
12
11
13

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
4
2
1

Reference: 210.20A

132. 010 – Industry Related Residential Version (201029)

1

In a dwelling unit, the washing machine shall _____.

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

Reference: 210.11C

133. 009 – Industry Related Residential Version (201029)

1

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

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

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

Reference: 210.8A

135. 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 15 or 20 amp, it shall be GFCI protected
If this receptacle is 20-amp, it shall not be GFCI protected.
If this receptacle is 15-amp, it shall not be GFCI protected.
This receptacle is not required to be GFCI protected, but it is recommended.

Reference: 210.8A

136. 006 – Industry Related Residential Version (201029)

1

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

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

Reference: 240.15B, 210.4B

137. 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.

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

Reference: 200.7C

138. 004 – Industry Related Residential Version (201029)

1

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

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

Reference: 200.6A

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.
25 feet.
50 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 shower.
All of these statements are true
It includes a sink and a toilet.

Reference: Definitions

(509) 488-0899

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