89 Matching questions

1. Utilization equipment is equipment that utilizes electricity for ____.
   a. chemicals
   b. heating
   c. lighting
   d. a through c
   Article 100 pg 33
2. Two 20-ampere small appliance circuits can supply more than one kitchen of a dwelling.
   a. True
   b. False
   Article 210.52(B)(3) Small Appliances, Kitchen Receptacle Requirements, pg 56
3. Varying duty is defined as _____.
   a. intermittent operation in which the load conditions are regularly recurrent
   b. operation at a substantially constant load for an indefinite length of time
   c. operation for alternate intervals of load and rest; or load, no load, and rest
   d. operation at loads and for intervals of time, both of which may be subject to wide variations
   Article 100 pg 28
4. Where installed in a metal raceway, all feeder conductors using a common neutral shall be ____.
   a. insulated for 600 volts
   b. enclosed within the same raceway
   c. shielded
   d. none of these
   Article 215.4(B)
5. Compliance with provisions of the Code will result in _____.
   a. good electrical service
   b. an efficient electrical system
   c. an electrical system free from hazard
   d. all of these
   Article 90-1(B) Purpose pg 22
6. When live parts of electrical equipment are guarded by suitable permanent, substantial partitions or screens, any openings in such partitions or screens shall be so sized and located that persons are not likely to come into accidental contact with live parts or to bring _____ into contact with them.
   a. dust
   b. conducting objects
   c. wires
   d. contaminating parts
   Article 110.27(A)(2) Live Parts Guarded Against Accidental Contact pg 39
7. Conductors on poles shall have a separation of not less than 1 foot where not placed on racks or brackets. Power conductors rated 300 volts or less installed above communication conductors supported on poles shall provide a horizontal climbing space of not less than _____ inches.
   a. 12
   b. 24
   c. 6
   d. none of the above
   Article 225.14(D) Open Conductor Spacings, Conductors on poles pg. 72
8. Ground-fault circuit-interrupter (GFCI) protection for personnel is required for all 125 volt, single-phase, 15 and 20 ampere receptacles installed in a dwelling-unit_____.
   a. attic
   b. garage
   c. laundry
   d. all of these
   Article 210.8(A)(2) Ground Fault Circuit-Innterrupter Protection , Dwelling Units pg 50
9. Equipment listed by a qualified electrical testing laboratory is not required to have the ____ wiring to be reinspected at the time of installation.
   a. external
   b. associated
   c. internal
   d. any of these
   Article 90.7 Examination of Equipment for Safety pg. 24
10. Switches or other equipment operating at 600 volts, nominal or less and serving only equipment within a high-voltage vault, room, or enclosure shall be permitted to be installed in the ____ enclosure, room, or vault if accessible to qualified persons only.
    a. restricted
    b. medium-voltage
    c. sealed
    d. high-voltage
    Article 110.34(B) Work Space and Guarding, Separation from Low Voltage Equipment, Exception pg 43
11. Receptacle outlets shall, insofar as practicable, be spaced equal distances apart in a dwelling unit. Receptacle outlets in floors shall not be counted as part of the required number of receptacle outlets unless they are located within ____ of the wall.
    a. 6 inches
    b. 12 inches
    c. 18 inches
    d. close to the wall
    Article 210.52(A) Dwelling Unit Receptacle Outlets, Floor Receptacles pg 56
12. Under the optional method for calculating a single-family dwelling, general loads beyond the initial 10 kW are to be assessed at a ____ percent demand factor.
    a. 40
    b. 50
    c. 60
    d. 75
    Article 220.30(B)Dwelling Unit, General Loads, pg 67
13. In dwelling units, the voltage between conductors shall not exceed 120 volts, nominal, between conductors that supply the terminals of _____.
    a. lighting fixtures
    b. cord and plug-connected loads of less than 1440 VA, nominal
    c. cord and plug-connected loads of more than 1440 VA, nominal
    d. a and b
    Article 210.6(A) Branch Circuit Voltage Limitations, Occupancy Limitations pg. 49
14. The required clearance for access to live parts operating 300 volts, nominal to ground where there are exposed live parts on one side and grounded parts on the other side is ____ feet according to Table 110-26(a).
    a. 3
    b. 3 1/2
    c. 4
    d. 4 1/2
    Table 110.26(A) Condition 2 Working Spaces, pg 38
15. A form of general-use switch so constructed that it can be installed in flush device boxes or on outlet box covers, or otherwise used in conjunction with wiring systems recognized by the Code is a ____ switch.
    a. transfer
    b. motor-circuit
    c. general-use snap
    d. bypass isolation
    Article 100 pg 32
16. Distinctive marking at the terminals during the process of installation shall identify the grounded conductors of _____ metal-sheathed cable.
    a. armored
    b. mineral insulated
    c. copper
    d. aluminum
    Article 200.6(A)(5) Means of Identifying Grounded Conductors, Sizes 6 AWG and Smaller pg 46
17. At least one receptacle outlet shall be installed directly above a show window for each _____.
    a. 12 square feet
    b. 12 linear feet
    c. 10 linear feet
    d. 15 horizontal feet
    Article 210.62 Show Windows, pg 58
18. A single receptacle is a ____ contact device with no other contact device on the same yoke.
    a. dual
    b. single
    c. multiple
    d. live
    Article 100 pg 31
19. Chapters 1 through 4 of the NEC apply _____.
    a. generally to all electrical installations
    b. to special installations and conditions
    c. to special equipment and material
    d. all of these
    Article 90.3 Code Arrangement pg 23
20. The connected load to which the demand factors of table 220.84 apply shall include the _____ rating of all appliances that are fastened in place, permanently connected or located to be on a specific circuit: ranges, wall-mounted ovens, counter-mounted cooking units, clothes dryers, water heaters, and space heaters.
    a. calculated
    b. nameplate
    c. circuit
    d. overcurrent protection
    Article 220.84(C)(3)Multifamily Dwelling, Calculated Loads, pg. 69
21. So constructed or protected that dust will not interfere with its successful operation is called _____.
    a. dusttight
    b. dustproof
    c. dust rated
    d. all of these
    Article 100 not in 2011 Code
22. Illumination on the exterior side of outdoor entrances or exits shall have grade level access can be controlled by _____.
    a. home automation devices
    b. motion sensors
    c. photocells
    d. any of the above
    Article 210.70(A)(2) Exception Lighting Outlets Required, Additional Locations
23. Using standard load calculations, the feeder demand factor for five household clothes dryers is _____ percent
    a. 70
    b. 85
    c. 50
    d. 100
    Article 220.54 Table220.54Electric Clothes Dryers, Dwelling Units, pg. 65
24. Open conductors installed outside shall be separated from open conductors of other circuits by not less than _____inches
    a. 4
    b. 6
    c. 8
    d. 10
    Article 225.14(C) Open Conductor Spacings, Separation from other circuits pg. 72
25. The NEC requires that electrical work be installed ____.
    a. in a neat and workmanlike manner
    b. under the supervision of a qualified person
    c. completed before being inspected
    d. all of these
    Article 110.12 Mechanical Execution of Work pg 35
26. The connection between the grounded (neutral) conductor and the equipment grounding conductor at the service is accomplished with the use of a _____jumper.
    a. main bonding
    b. bonding
    c. equipment bonding
    d. circuit bonding
    Article 100 pg. 26
27. There shall be no reduction in the size of the neutral conductor on ____ -type lighting loads.
    a. dwelling unit
    b. hospital
    c. nonlinear
    d. motel
    Article 220.61** This does not exist in 2011 code see pg. 67
28. Installations of communications equipment under the exclusive control of communications utilities located outdoors or in building spaces used exclusively for such installations _____ covered by the Code.
    a. are
    b. are sometimes
    c. are not
    d. might be
    Article 90.2(B)(4) Not Covered pg. 22
29. The minimum size service drop conductor permitted by the Code is No. ____ copper and No. _____ aluminum.
    I. 6 cu., II. 8 cu, III. 6 al., IV 8 al.,
    a. II and III
    b. I and IV
    c. I and III
    d. II and IV
    Article 230.23(B)Minimum Size, pg. 80
30. Electrical installations over 600 volts located in ____, where access is controlled by lock and key or other approved means, shall be considered to be accessible to qualified persons only.
    a. a room or closet
    b. a vault
    c. an area surrounded by a wall, screen, or fence
    d. any of these
    Article 110.31 Over 600 Volts Nominal, Enclosure for Electrical Installations, pg 40
31. It shall be permitted to base the ____ rating of a range receptacle on a single range demand load specified in Table 220-19.
    a. circuit
    b. voltage
    c. ampere
    d. load
    Article 210.21(B)(4) Range Receptacle Rating pg 54
32. Which of the following cannot be attached to vegetation?
    a. overhead conductor spans
    b. overhead conductor spans for temporary wiring
    c. lighting fixtures
    d. all of these
    Article 225.26 and Exception, and 410.16(H) Vegetation as support, pg. 73
33. A circuit breaker is a device designed to _____ a circuit by non-automatic means and to open a circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating
    a. blow
    b. disconnect
    c. connect
    d. open and close
    Article 100 pg 27
34. Multioutlet circuits rated 15 or 20 amperes can supply fixed appliances (utilization equipment fastened in place) as long as the fixed appliances do not exceed ____ percent of the circuit rating.
    a. 125
    b. 100
    c. 75
    d. 50
    Article 210.23(A) 15 and 20 Amp Branch Circuit, Utilization Equipment Fixed in Place pg 54
35. Equipment is required to be installed and used according to its ____ instructions.
    a. listed or published
    b. labeled or design
    c. listed and labeled
    d. any of the above
    Article 110.3(B) Installation and Use pg 35
36. When determining the load for recessed lighting fixtures for branch circuits, the load shall be based on the _____.
    a. wattage rating of the fixture
    b. VA of the equipment and lamps
    c. wattage rating of the lamps
    d. none of these
    Article 220.14(D) Other Loads, All Occupancies, Luminaires pg 62
37. Connection by means of wire binding screws or studs and nuts having upturned lugs or the equivalent shall be permitted for ____ or smaller conductors.
    a. No. 10
    b. No. 8
    c. No. 6
    d. none of these
    Article 110.14(A) Electrical Connections, Terminals pg. 36
38. The Code applies to the installation of _____.
    a. electrical conductors and equipment within or on public and private buildings
    b. outside conductors and equipment on the premises
    c. optical fiber cable
    d. all these
    Article 90.2(A) Covered pg. 22
39. A device intended for the protection of personnel that functions to de-energize a circuit within an established period of time when a current to ground exceeds some predetermined value less than that required to operate the overcurrent protection device of the supply circuit is a(n) _____.
    a. dual-element fuse
    b. inverse-time breaker
    c. ground-fault circuit-interrupter
    d. safety switch
    Article 100 pg 29
40. Where two to six service disconnecting means in separate enclosures are grouped at one locations and supply separate loads from one service drop or lateral, _____ set(s) of service-entrance conductors shall be permitted to supply each or several such service equipment enclosures.
    a. 1
    b. 2
    c. 3
    d. 4
    Article 230.40 Exception #2 Number of Service Entrance Conductor Sets pg. 81
41. Recognized as suitable for the specific purpose, function, use, environment, and application is the definitions of _____.
    a. labeled
    b. identified
    c. listed
    d. approved
    Article 100 pg 29
42. Overhead conductors to a building shall maintain a vertical clearance of _____ feet above platforms, projections or surfaces from which they might be reached. This vertical clearance shall extend 3 feet measured horizontally from the platforms, projections, or surfaces form which they might be reached.
    a. 6
    b. 8
    c. 10
    d. 112
    Article 225.19(D) Final Spans, 225.18 Clearance for Overhead Conductors, pg 72-73
43. Where the load is computed on a volt-amperes-per-square-foot basis, the load shall be evenly proportioned among multioutlet branch circuits within the _____.
    a. premises
    b. branch circuits
    c. panelboard(s)
    d. dwelling unit
    Article 210.11(B) Load Evenly Proportioned Among Branch circuits pg 51
44. Underground copper service conductors shall not be smaller than No. _____.
    a. 3
    b. 4
    c. 6
    d. 8
    Article 230.31(B) Underground Service Conductors, Size and Rating, Minimum Size, pg. 81
45. Connected to earth or to some conducting body that serves in place of earth is called _____.
    a. grounding
    b. bonded
    c. grounded
    d. all the above
    Article 100 pg 29
46. Raceways on exterior surfaces of building shall be _____ and arranged to drain.
    a. suitable for use in wet locations
    b. rainproof
    c. watertight
    d. waterproof
    Article 225.22 Raceways on exterior Surfaces of buildings, pg. 73
47. A conductor encased within material of composition or thickness that is not recognized by the code is called a _____ conductor.
    a. non-insulating
    b. bare
    c. covered
    d. protected
    Article 100 pg 27
48. The neutral conductor of a 3-wire branch circuit supplying a household electric range shall be permitted to be smaller than the ungrounded conductors where the maximum demand of a 8 3/4 kW range has been computed according to Column A of Table 220-19. However, the neutral ampacity shall not be less than ____ percent of the branch circuit rating and not be smaller than No. _____.
    a. 50, 6
    b. 70, 6
    c. 50, 10
    d. 70, 10
    Article 210.19(A)(3) Exception #2 pg 53
49. Sufficient access and _____ shall be provided and maintained about all electrical equipment to permit ready and safe operation and maintenance of such equipment
    a. ventilation
    b. cleanliness
    c. circulation
    d. working space
    Article 110.26 600 Volts, Nominal or Less, Spaces about Electrical Equipment pg. 37
50. Where the voltage between conductors does not exceed 300 volts, the roof has a slope of not less than 4 inches in 12 inches, a reduction in clearance to _____ feet shall be permitted.
    a. 1
    b. 2
    c. 3
    d. 4
    Article 225.19(A)Exception #2 Clearances from Buildings for Conductors not over 600 Volts, Above Roofs pg. 73
51. No ____ shall be attached to any terminal or lead so as to reverse designated polarity.
    a. grounded conductor
    b. grounding conductor
    c. ungrounded conductor
    d. grounding connector
    Article 200.11 Branch Circuits, Polarity of Connections pg 48
52. The National Electrical Code is _____.
    a. intended to be a design manual
    b. meant to be used as an instruction guide for untrained persons
    c. for the practical safeguarding of persons and property
    d. published by the Bureau of Standards
    Article 90.1(A) Purpose pg. 22
53. A branch circuit that supplies only one utilization equipment is a(n) _____branch circuit
    a. individual
    b. general-purpose
    c. isolated
    d. special purpose
    Article 100 pg 27
54. Equipment or materials to which a symbol or other identifying mark acceptable to the authority having jurisdiction has been attached is known as _____.
    a. listed
    b. labeled
    c. approved
    d. rated
    Article 100 pg 30
55. Service conductors between the street main and the first point of connection to the service entrance run underground are know as the _____.
    a. utility service
    b. service lateral
    c. service drop
    d. main service conductors
    Article 100 pg 32
56. Receptacle outlets shall not be installed in a face-up position in the work surfaces or counter-tops of a wet bar sink.
    a. True
    c. False
    Article 210-8(A)(7) not included in 2011 code... does stipulate that a receptacle can be installed in countertop if listed for the application 210.52(C)(5) pg 57
57. When the term exposed is used in the Code it refers to _____.
    a. capable of being inadvertently touched or approached nearer than a safe distance by a person
    b. parts that are not suitably guarded, isolated or insulated
    c. wiring on, or attached to, the surface or behind panels being designed to allow access
    d. all of the above
    Article 100 pg 28
58. Something constructed, protected, or treated so as to prevent rain from interfering with the successful operation of the apparatus under specified test conditions is defined as _____.
    a. raintight
    b. waterproof
    c. weathertight
    d. rainproof
    Article 100 pg 31
59. _____ shall not be installed beneath openings through which material may be moved, such as openings in farm and commercial buildings, and shall not be installed where they will obstruct entrance to these building openings.
    a. Overcurrent protection devices
    b. Overhead service conductors,
    c. Grounding conductors
    d. Wiring systems
    Article 230.9 Clearances on Buildings, Building Openings pg. 79
60. A ____ system is where a premise wiring is derived from a transformer and that has no direct electrical connection, including a solidly connected grounded circuit conductor, to supply conductors originating in another system.
    a. separately derived
    b. classified
    c. direct
    d. emergency
    Article 100 pg 31
61. Receptacle loads for non-dwelling units computed at not more than 180 VA per outlet in accordance with Section 220.14(H) and (I) shall be permitted to be _____.
    a. added to the lighting loads and made subject to demand factors of Table 220.44
    b. made subject to the demand factors of Table 220.42
    c. made subject to the lighting demand loads of Table 220.3(B))Recepticle Outlets
    d. a or b
    Article 220.44 Receptacle Loads - Other than Dwelling Units pg. 64
62. Overhead service conductors from the last pole or other aerial support to and including the splices if any are called _____ conductors.
    a. service-entrance
    b. service lateral
    c. service drop
    d. main service conductors
    Article 100 pg 32
63. Effective January 1, 2002, all branch circuits that supply 125 volt, 15 and 20 ampere receptacles in dwelling unit bedrooms shall be _____ protected.
    a. AFCI
    b. GFCI
    c. a and b
    d. none of these
    Article 210.12 Dwelling Units, pg 52
64. The environment of a wiring method under the eve of a house with a roof open porch would be considered a _____ location.
    a. dry
    b. damp
    c. wet
    d. moist
    Article 100 pg 30
65. A circuit in which any arc or thermal effect produced, under intended operating conditions of the equipment or due to opening, shorting, or grounding of field wiring, is not capable, under specified test conditions, of igniting the flammable gas, vapor, or dust-air mixture is a _____ circuit.
    a. non-conductive
    b. branch
    c. nonincendive
    d. closed
    Article 100 not listed in 2011 code
66. Electrical equipment that depends on the _____ principles for cooling of exposed surfaces shall be installed so that airflow over such surfaces is not prevented by walls or adjacent installed equipment.
    a. Peter
    b. natural circulation of air and convection
    c. artificial cooling and circulation
    d. air-conditioning
    Article 110.13(B)Mounting and Cooling of Equipment, Cooling pg 35
67. On circuits over 600 volts, nominal, where energized live parts are exposed, the minimum clear work space shall not be less than ____ high for over 600 volts.
    a. 3 feet
    b. 5 feet
    c. 6 feet 3 inches
    d. 6 feet 6 inches
    Article 110.32 Work Space about Equipment, pg 42
68. The 3 volt-ampere per square foot for dwelling unit general lighting includes all 15 and 20 ampere general use receptacles. The floor area shall _____ open porches, garages, or unused or unfinished spaces, not adaptable for future use.
    a. include
    b. not include.
    Article 220.12 Branch Circuit, Feeder, and Service Calculations, Lighting Load for Specified Occupancies, pg 61
69. What size THHN conductor is required for a 50-ampere circuit if the equipment terminals are listed for 75 degrees C conductor sizing? Tip 310-16 lists conductor ampacities.
    a. No. 10
    b. No. 8
    c. No. 6
    d. any of these
    Article 110.14(C)(1)(a)(2) Electrical Connections, Temperature Limitations, Equipment Provisions pg 36
70. Which of the following does the Code recognize as a device?
    a. switch
    b. switch and light bulb
    c. lock nut and switch
    d. lock nut and bushing
    Article 100 pg 28
71. A one-family or two-family dwelling unit requires a minimum of ____ GFCI receptacles(s) located outdoors.
    a. 0
    b. 1
    c. 2
    d. 3
    Article 210.52(E) Outdoor Outlets, One-Family and Two-Family Dwellings pg 57
72. A synthetic nonflammable insulating medium which, when decomposed by electric arcs, produces predominantly nonflammable gaseous mixtures is known as _____.
    a. oil
    b. Geritol
    c. askarel
    d. phenol
    Article 100pg. 26
73. If a portion of the dwelling-unit basement is finished, then a GFCI protected 125 volt 15 or 20 ampere receptacle must be installed in the unfinished area of the basement.
    a. True
    b. False
    Article 210-52(G) Dwelling Unit Receptacle Outlets, Basements,Garages, and Accessory Buildings, pg. 58
74. The lighting outlets provided for illumination about electrical equipment over 600 volts shall be so arranged that persons changing lamps or making repairs on the ____ will not be endangered by live parts or other equipment.
    a. lighting system
    b. electrical system
    c. electrical equipment
    d. panelboard
    Article 110.34(D) Working Space and Guarding, Illumination pg 43
75. The total components and subsystems that, in combination, convert solar energy into electrical energy is called a _____system
    a. solar
    b. solar voltaic
    c. separately derived source
    d. solar photovoltaic
    Article 100 pg 32
76. No point along the floor line in any wall space may be more than ____ feet from an outlet.
    a. 12
    b. 10
    c. 8
    d. 6
    Article 210.52(A)(1) Dwelling Unit Receptacle outlets, Spacing pg 56
77. For other than dwelling units, a wall-switched lighting outlet is required near equipment requiring servicing in attics or underfloor spaces, and the switch must be located at the point of entrance to the attic or underfloor space.
    a. True
    b. False
    Article 210.70(A)(3) an d(C) Lighting Outlets Required, Storage or Equipment Spaces, Other than Dwelling Units pg 58 and 59
78. Kitchen and dining room countertop receptacle outlets in dwelling units must be installed above the countertop surface and not more than ____ above the countertop.
    a. 12
    b. 18
    c. 24
    d. none of these
    Article 210.52(C)(5) Kitchen Receptacle Requirements, Receptacle Outlet Location, pg 57
79. The minimum clearance for service drops, not exceeding 600 volts, over commercial areas subject to truck traffic is _____ feet.
    a. 10
    b. 12
    c. 15
    d. 18
    Article 230.24(B) Services, Clearances, Above Roofs, pg. 80
80. One receptacle outlet shall be installed at each island or peninsular countertop with a long dimension of ____ inches or greater and a short dimension of ____ inches or greater..
    a. 12, 24
    b. 24, 12
    c. 24, 48
    d. 48, 24
    Article 210.52(C)(2) and (C)(3) Kitchen Receptacle Requirements, Island Counter-top Spaces pg 56
81. A single building or other structure sufficiently large to require two or more services is permitted by _____.
    a. architects
    b. special permission
    c. written authorization
    d. master electricians
    Article 230.2(C)(2) Services, Number of Services, Capacity Requirements, pg. 79
82. Where individual open conductors are exposed to _____, the conductors shall be mounted on insulators or on insulating supports attached to racks, brackets, or other approved means.
    a. a corrosive environment
    b. the weather
    c. the general public
    d. any inspector
    Article 230.51(C) Individual Open Conductors pg. 83
83. The case or housing of apparatus or the fence surrounding an installation to prevent accidental contact of persons to energized parts is called _____.
    a. guarded
    b. covered
    c. protection
    d. an enclosure
    Article 100 pg 28
84. The purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity. This Code contains provisions considered necessary for safety regardless of _____.
    a. efficient use
    b. convenience
    c. good service or future expansion
    d. all of these
    Article 90-1(B)Purpose pg. 22
85. ____ shall be provided to give safe access to the working space around equipment over 600 volts installed on platforms, balconies, mezzanine floors, or in attic or roof rooms or spaces.
    a. Ladders
    b. Platforms or ladders
    c. Permanent ladders or stairways
    d. Openings
    Article 110.33(B) Entrance to Enclosures and Access to Working Space, Access pg 42
86. Separately installed pressure connectors shall be used with conductors at the _____ not exceeding the ampacity at the listed and identified temperature rating of the connector.
    a. voltages
    b. temperatures
    c. listings
    d. ampacities
    Article 110.14(C)(2) Electrical Connections, Temperature Limitations Separate Connector Provisions, pg 36
87. Electrical equipment shall have sufficient short-circuit ___ rating to permit the circuit protection device to clear a fault without extensive damage to the electrical components of the circuit
    a. withstand
    b. current
    c. overload
    d. all of these
    Article 110.10 Circuit Impedance...etc. pg35
88. Capable of being removed or exposed without damaging the building structure or finish, or not permanently closed in by the structure or finish of the building defines ____.
    a. accessible(equipment)
    b. accessible (wiring methods)
    c. accessible, readily
    d. a, b, and c
    Article 100 pg. 26
89. Something constructed so that moisture will not enter the enclosure under specific test conditions is called _____.
    a.. watertight
    b. moisture proof
    c. waterproof
    d. rainproof
    Article 100 pg 33

1. a 18 inches
2. b 40
3. c 70, 10
4. d 4
5. e working space
6. f 3
7. g main bonding
8. h operation at loads and for intervals of time, both of which may be subject to wide variations
9. i service lateral
10. j 24
11. k all these
12. l True
13. m 12 linear feet
14. n ampere
15. o a and b
16. p high-voltage
17. q 18
18. r True
    new code would be false
19. s the weather
20. t 6 feet 6 inches
21. u damp
22. v listed and labeled
23. w an enclosure
24. x natural circulation of air and convection
25. y False
26. z special permission
27. aa grounded
28. ab Permanent ladders or stairways
29. ac enclosed within the same raceway
30. ad internal
31. ae a or b
32. af 8
33. ag are not
34. ah labeled
35. ai AFCI
36. aj not include
37. ak suitable for use in wet locations
38. al 1
39. am nonincendive
40. an in a neat and workmanlike manner
41. ao all of these
42. ap nameplate
43. aq individual
44. ar grounded conductor
45. as nonlinear
46. at separately derived
47. au accessible (wiring methods)
48. av 50
49. aw identified
50. ax overhead conductor spans
51. ay panelboard(s)
52. az switch
53. ba a through c
54. bb 24, 12
55. bc an electrical system free from hazard
56. bd No. 10
57. be mineral insulated
58. bf current
59. bg general-use snap
60. bh any of these
61. bi 10
62. bj rainproof
63. bk 3 1/2
64. bl single
65. bm Overhead service conductors
66. bn ampacities
67. bo 85
68. bp II and III
69. bq lighting system
70. br covered
71. bs all of the above
72. bt VA of the equipment and lamps
73. bu No. 8
74. bv dustproof
75. bw ground-fault circuit-interrupter
76. bx any of the above
77. by open and close
78. bz askarel
79. ca 2
80. cb True
    In 2011 This is now true for all Spaces
81. cc watertight
82. cd solar photovoltaic
83. ce for the practical safeguarding of persons and property
84. cf 6
85. cg 18 20 inches in 2011 code
86. ch service drop
87. ci conducting objects
88. cj garage
89. ck generally to all electrical installations