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

1. 200 – Industry Related Residential Version (201029)

1

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

338
334
340
336

Reference: 340.1

2. 199 – Industry Related Residential Version (201029)

1

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

No separation is needed.
2
1
3

Reference: 800.133B

3. 198 – Industry Related Residential Version (201029)

1

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

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

Reference: 725.136A&B

4. 196 – Industry Related Residential Version (201029)

1

A single family dwelling with an indoor packaged hot tub assembly may utilize romex as a wiring method if it ___________.

is installed in a raceway only
contains a copper equipment grounding conductor sized at a minimum of 10 AWG or larger only
complies with Part I and II of Article 680
Romex is not allowed to feed an indoor hot tub

Reference: 680.43

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.

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

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)
#8 solid or stranded
None of these statements are true
#10 solid or stranded

Reference: 680.26B

7. 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 240 volt branch circuit for the pool pump motor without GFCI protection.
Both of these statements are true
None of these statements are true
The 120 volt branch circuit (not required to be GFCI protected) used for outside lights.

Reference: 680.23F 3

8. 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

9. 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

10. 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
25
10
22.5

Reference: Table 680.9A

11. 187 – Industry Related Residential Version (201029)

1

A park trailer is intended to be used for ___________.

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

Reference: 552.4

12. 185 – Industry Related Residential Version (201029)

1

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

150
80
200
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 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

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.

6
10
3
4

Reference: 440.64

15. 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.

Unless the installation is covered by either of the exceptions, a disconnecting means if required for the evaporator motor.
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.

Reference: 430.102, 440.14

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 _____.

6
8
7
5

Reference: 424.4

17. 178 – Industry Related Residential Version (201029)

1

Given a wall mounted oven is cord and plug connected:

A pull out drawer in the bottom of the oven could make the cord and plug accessible.
For the cord and plug to serve as the unit disconnect, it must be accessible.
All of these statements are true
Having to pull the unit out of the wall first to get access to the plug and cord may not be considered accessible, and additional disconnecting would be required.

Reference: 422.33B

18. 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.
None of these statements are true
It is located behind the dishwasher requiring removal to gain access.
A plug and receptacle are not allowed to serve as a disconnect.

Reference: 422.33

19. 176 – Industry Related Residential Version (201029)

1

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

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

Reference: 422.31A

20. 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.

80%
50%
100%
125%

Reference: 422.11A

21. 172 – Industry Related Residential Version (201029)

1

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

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

Reference: 410.16C

22. 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.

24
12
18
6

Reference: 410.16C

23. 169 – Industry Related Residential Version (201029)

1

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

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

Reference: 406.9C

24. 168 – Industry Related Residential Version (201029)

1

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

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

Reference: 410.10D

25. 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 ___________.

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

Reference: 406.9A

26. 166 – Industry Related Residential Version (201029)

1

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

25
30
20
40

Reference: 406.3C

27. 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.

150
250
300
400

Reference: 404.8B

28. 162 – Industry Related Residential Version (201029)

1

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

5 feet
6 feet, 7 inches
6 feet
4.5 feet

Reference: 404.8A

29. 161 – Industry Related Residential Version (201029)

1

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

neutral
grounding
ungrounded
grounded

Reference: 404.2

30. 160 – Industry Related Residential Version (201029)

1

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

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

Reference: 400.12

31. 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
None of these statements are true
exceeds 35 degree C
is insulated with blown-in insulation that surrounds the wire

Reference: 394.12

32. 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.
grey colored conduit
orange colored conduit
None of these statements are true

Reference: 352.6 352.10

33. 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.

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

Reference: 352.24

34. 155 – Industry Related Residential Version (201029)

1

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

4
3
3.5
4.5

Reference: 334.30 B2

35. 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 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
When passing through a floor the cable shall be enclosed in conduit extending at least 6 inches above the floor.

Reference: 334.15B, 23

36. 152 – Industry Related Residential Version (201029)

1

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

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

Reference: 334.12A

37. 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.
None of these statements are true
An outlet box cannot be used as support of the fixture.

Reference: 314.27A

38. 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.

1/4
0
1/8
1/2

Reference: 314.20

39. 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.

100
110
85
115

Reference: Table 310.12

40. 146 – Industry Related Residential Version (201029)

1

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

All of these statements are true
2, 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

Reference: 310.10G

41. 145 – Industry Related Residential Version (201029)

1

There are 4 separate raceways used to enclose paralleled conductors.

None of these statements are true
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
2 conduits shall be rigid steel and two may be rigid nonmetallic conduit (PVC).

Reference: 310.10G

42. 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.
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.

Reference: 300.14

43. 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.

24
6
18
12

Reference: Table 300.5

44. 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?

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

Reference: Table 300.5

45. 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

46. 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.
Equipment grounding conductors may be run in parallel.
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.

Reference: 250.122A

47. 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?

#2
#4
#6
1/0

Reference: Tab250.66, 66A

48. 137 – Industry Related Residential Version (201029)

1

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

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

Reference: Tab250.66, 64D1

49. 136 – Industry Related Residential Version (201029)

1

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

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

Reference: Tab. 250.66, 64

50. 135 – Industry Related Residential Version (201029)

1

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

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

Reference: 250.64C

51. 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
None of these statements are true
1
Rods are not allowed as supplementary electrodes.

Reference: 250.54

52. 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?

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

Reference: 250.53

53. 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
1 (resistance to ground is more than 25 ohms)
2
The supplementary rod is recommended only.

Reference: 250.53D 2

54. 126 – Industry Related Residential Version (201029)

1

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

100
125
75
60

Reference: 230.79C

55. 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
8
4
3

Reference: 230.9A

56. 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.
The required disconnecting means shall be red.
No disconnecting means is required for this situation.
A snap switch is allowed for the required disconnecting means.

Reference: 225.36

57. 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 _____.

5 feet
6 feet 7 inches
4 feet
6 feet

Reference: 404.8 A

58. 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?

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

Reference: 210.70A 1

59. 121 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.70A

60. 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?

Kitchen
None of these statements are true
Bathroom
Dining room

Reference: 210.70A 1

61. 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.
None of these statements are true
This is allowed when the switch is supplied by the small appliance branch circuit required to serve this room.
Both A and B above are true statements.

Reference: 210.70, 52B 1

62. 118 – Industry Related Residential Version (201029)

1

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

Both of these statements are true
This is allowed for one mounted on the ceiling if a wall switch is also installed.
None of these statements are true
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.

Reference: 210.70A 1

63. 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
commercial buildings
All of these statements are true
one family dwellings

Reference: 210.63

64. 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).
All of these statements are true
Inside a kitchen cabinet.
Over 6 feet above the floor.

Reference: 210.52

65. 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 18 inches of the wall
within 24 inches of the wall
within 12 inches of the wall

Reference: 210.52A 3

66. 111 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.52B

67. 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
This receptacle is no longer required
6

Reference: 210.52 C2

68. 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
36
48
24

Reference: 210.52D

69. 107 – Industry Related Residential Version (201029)

1

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

80
50
70
20

Reference: 210.19C

70. 106 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.12B

71. 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.

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

Reference: 210.11C 3 ex

72. 104 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.8A 6

73. 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.
Both of these statements are true
None of these statements are true

Reference: 200.7C

74. 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?

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

Reference: Table 300.5

75. 097 – Industry Related Residential Version (201029)

1

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

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

Reference: 225.30

76. 096 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.70A 2

77. 094 – Industry Related Residential Version (201029)

1

A hydromassage bathtub…

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

Reference: 680.71, 73, 74

78. 093 – Industry Related Residential Version (201029)

1

Which shall have ground fault circuit interrupter protection?

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

Reference: 680.43, 56A, 71

79. 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….

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

Reference: 680.41

80. 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.
Listed pressure connectors.
Indoor type water pipe clamps.
Any creative fitting.

Reference: 680.26B, 250.8

81. 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 except for dwelling units.
Requires GFCI protection if 15 to 20-amp three phase only.
Requires GFCI protection.

Reference: 680.22A

82. 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 4 inches above ground level.
All of these statements are true
Not be located in a walkway without protection.
Not be less than 8 inches above pool water level.

Reference: 680.24A2

83. 086 – Industry Related Residential Version (201029)

1

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

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

Reference: 550.32F

84. 082 – Industry Related Residential Version (201029)

1

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

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

Reference: 440.14

85. 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.
Yes, 12.55 amps.
Yes, 13 amps.
No, 15 amps.

Reference: 430.24

86. 080 – Industry Related Residential Version (201029)

1

Baseboard heaters…

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

Reference: 424.10 notes

87. 078 – Industry Related Residential Version (201029)

1

Which ceiling paddle fan installation meets code?

None of these statements are true
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.

Reference: 422.18

88. 077 – Industry Related Residential Version (201029)

1

Recessed fixtures (can lights)…

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

Reference: 410.116A&B

89. 075 – Industry Related Residential Version (201029)

1

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

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

Reference: 410.16C

90. 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 Equipment Ground.
GFCI Protected.
No Grounded Conductor

Reference: 406.4D

91. 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.
Is not required to be grounded.
Requires a 20-amp rated switch minimum.

Reference: 404.9B

92. 068 – Industry Related Residential Version (201029)

1

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

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

Reference: 352.10 (I), 314.23F

93. 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.

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

Reference: 352.44

94. 066 – Industry Related Residential Version (201029)

1

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

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

Reference: 352.44

95. 065 – Industry Related Residential Version (201029)

1

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

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

Reference: 352.30B

96. 064 – Industry Related Residential Version (201029)

1

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

6
3
5
4

Reference: 348.24B

97. 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

98. 062 – Industry Related Residential Version (201029)

1

Flat Nonmetallic-Sheathed Cable (Romex) cannot…

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

Reference: 334.40

99. 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

100. 060 – Industry Related Residential Version (201029)

1

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

8
4
6
5

Reference: 334.15B

101. 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?

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

Reference: 310.12A

102. 056 – Industry Related Residential Version (201029)

1

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

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

Reference: 310.12A

103. 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
18
24
12

Reference: 310.15C 1

104. 054 – Industry Related Residential Version (201029)

1

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

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

Reference: 300.22C_ex

105. 052 – Industry Related Residential Version (201029)

1

Raceways exposed to different temperatures…

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

Reference: 300.7

106. 051 – Industry Related Residential Version (201029)

1

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

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

Reference: 300.5D 1

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

Reference: 300.5D 3

108. 049 – Industry Related Residential Version (201029)

1

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

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.
A bushing or grommet is required only for factory cut holes.

Reference: 300.4B 1

109. 048 – Industry Related Residential Version (201029)

1

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

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

Reference: Table 300.5_notes

110. 047 – Industry Related Residential Version (201029)

1

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

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

Reference: 250.140

111. 046 – Industry Related Residential Version (201029)

1

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

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

Reference: 250.118 5

112. 045 – Industry Related Residential Version (201029)

1

Which is a true statement?

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

Reference: 250.64E

113. 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.
All of these statements are true
If practicable, they need to be installed below moisture level.
They can be driven at a 45* angle if rock is found.

Reference: 250.53A 4

114. 042 – Industry Related Residential Version (201029)

1

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

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.
Both of these statements are true

Reference: 250.53D 2

115. 040 – Industry Related Residential Version (201029)

1

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

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

Reference: 250.32B ex

116. 039 – Industry Related Residential Version (201029)

1

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

All of these statements are true
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.

Reference: 240.4B

117. 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.
Shall be below 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.

Reference: 230.54C

118. 035 – Industry Related Residential Version (201029)

1

Service entrance conductors…

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

Reference: 230.46

119. 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.

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

Reference: 230.40 ex 3

120. 032 – Industry Related Residential Version (201029)

1

Open service conductors installed on buildings require…

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

Reference: 230.9A

121. 031 – Industry Related Residential Version (201029)

1

An outside pole light…

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

Reference: 225.31 ex 4

122. 030 – Industry Related Residential Version (201029)

1

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

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

Reference: 225.31, 36, 37

123. 029 – Industry Related Residential Version (201029)

1

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

35
50
40
25

Reference: Table 220.45

124. 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.
Is required within 6 feet of a doorway.
Has no specific location requirement, just near an entrance.
Is required within 5 feet of a doorway.

Reference: 210.70A

125. 026 – Industry Related Residential Version (201029)

1

An air conditioner…

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

Reference: 210.63

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

Reference: 210.60 B

127. 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

128. 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

129. 016 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.52B 2

130. 015 – Industry Related Residential Version (201029)

1

A receptacle outlet for a dwelling refrigerator….

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

Reference: 210.52B1, 210.8

131. 014 – Industry Related Residential Version (201029)

1

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

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

Reference: 210.25B

132. 011 – Industry Related Residential Version (201029)

1

In a dwelling unit bathroom…

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

Reference: 210.11C

133. 010 – Industry Related Residential Version (201029)

1

In a dwelling unit, the washing machine shall _____.

be installed on a separate 20-amp circuit.
None 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.
Both of these statements are true

Reference: 210.11C

134. 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.
All of these require GFCI protection.
Workbench outlet in a garage.
One duplex receptacle for a freezer in a garage.

Reference: 210.8A

135. 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.
Now not allowed, it must be GFCI protected.
A duplex receptacle.
Marked "not GFCI protected.

Reference: 210.8A

136. 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 15-amp, it shall not be GFCI protected.
This receptacle is not required to be GFCI protected, but it is recommended.
If this receptacle is 20-amp, it shall not be GFCI protected.

Reference: 210.8A

137. 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.
None of these statements are true
Two single pole breakers with an approved handle tie.
Both of these statements are true

Reference: 240.15B, 210.4B

138. 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 shall be white with a colored green stripe.
The white conductor does not have to be re-identified.
The white conductor must be permanently re-identified where visible.

Reference: 200.7C

139. 002 – Industry Related Residential Version (201029)

1

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

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

Reference: Definitions

140. 001 – Industry Related Residential Version (201029)

1

An area is considered a bathroom if…

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

Reference: Definitions

(509) 488-0899

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