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142 Matching questions

  1. No. 10 aluminum
  2. No. 6 AWG copper or No. 4 AWG Aluminum
  3. No
  4. 10
  5. Guarded
  6. Controller
  7. 20 inches
  8. Appliance
  9. Sealable
  10. 50
  11. 28 inches
  12. 1, largest
  13. 70
  14. Service equipment
  15. 55
  16. Ground-fault protection of equipment
  17. Hexagonal
  18. Dry
  19. The side of a building
  20. 312.6(A)
  21. Branch circuits
  22. .0243
  23. Lighting outlet
  24. Current, voltage
  25. 4 ½ inches
  26. Circular mils
  27. SWD
  28. T
  29. Finished, unfinished
  30. Greater
  31. 24 inches
  32. Nominal
  33. four No. 16 or No. 18 fixture wires
  34. 24
  35. Nonconductive coatings
  36. 18
  37. Vertical
  38. Panelboards, receptacles
  39. Square foot
  40. 30
  41. Grounded
  42. Bushing
  43. Dusttight
  44. Six
  45. Glass or porcelain
  46. 9
  47. No. 1/0
  48. Bypass isolation
  49. .50
  50. .013
  51. Ground-fault circuit interrupter protection
  52. 6'6"
  53. Inverse time
  54. Load
  55. Grounded conductor
  56. 4 x 1 ¼
  57. 0
  58. 3
  59. Disconnecting means
  60. 4x2 1/8
  61. Ungrounded
  62. 36
  63. 2
  64. Neutral
  65. Energized conductors
  66. Interrupting rating
  67. False
  68. Accessible
  69. 4 x 2 1/8 square
  70. Copper-clad aluminum with individual insulation
  71. Fuse
  72. Explosion-proof
  73. 300 kcmil
  74. panelboard
  75. 22 cubic inches
  76. Type S
  77. trim
  78. 60%
  79. 15
  80. Two
  81. .0353
  82. 314-16a
  83. Festoon
  84. True
  85. Supply side
  86. Occupant
  87. opening.
  88. Approved
  89. An electrical system free from hazard
  90. Open or closed
  91. 40
  92. 2, largest
  93. Building construction
  94. Conduit body
  95. Voltage and amperage
  96. Effectively bonded together
  97. Conductor
  98. 5
  99. Outlet
  100. area of the raceway, percent area fill allowed, area of the conductors
  101. Device
  102. Listed for use in wet locations
  103. Circuit conductors
  104. 7
  105. White
  106. One
  107. Warning signs
  108. 12
  109. Four
  110. Sliding panels
  111. feeder
  112. Yes
  113. 11
  114. 5/8 inch
  115. Devices, cable clamps, fixture studs or hickeys.
  116. 100
  117. Raising of ladders
  118. Secondary
  119. Annex C
  120. Service
  121. No. 3/0
  122. Transformers
  123. Coordinated, overload
  124. 75 degrees C
  125. The low voltage equipment.
  126. 1
  127. 1 ½ inch
  128. Open
  129. 4
  130. Are not
  131. Raintight
  132. 6
  133. Beneath
  134. 15 inches
  135. Above the point of attachment
  136. 14 inches
  137. Grounded.
  138. 12 inches
  139. 312.6
  140. No. 18 and larger
  141. 314.28
  142. 8
  1. a A two-family dwelling unit, such as a duplex apartment, is considered a single family dwelling. (True/False)
  2. b (210)Dwelling unit GFCI protection is required for all 125-volt, 15 and 20 ampere receptacles installed to supply countertop appliances in kitchens.(True/False)
  3. c Angle Pull Calculation (90 degrees, diameter of raceway) must not be less than ___ times the trade diameter of the largest raceway plus the sum of the diameters of the remaining raceways on the same wall of the box.
  4. d Depth of Box and Conduit body sizing: When conductors enter an enclosure opposite a removable cover, such as the back of a pull box or conduit body, the distance from where the conductors enter to the removable cover should be calculated according to Table _____, one wire per terminal.
  5. e (250) When a building has two or more elecrodes for different services, the separate electrodes must be ______. This shall be considered as a single electrode in this sense.
  6. f (250) Where service-entrance conductors are installed in parallel, the grounded conductor in each raceway can be sized, based on the size of the ungrounded service-entrance (phase) conductor in the raceway, but not smaller than _____.
  7. g Circuit protective devices are used to clear a fault without the occurrence of extensive damage to te electrical components of the circuit. This fault shall be assumed to be either between two or more of the _____ or between any circuit conductor and the grounding conductor or enclosing metal raceway.
  8. h (220) The connected load to which the demand factors of Table 220-84 apply shall include 3 volt-amperes per _____ for general lighting and general-use receptacles.
  9. i (230) Where the service overcurrent devices are locked or sealed, or not readily accessible to the _____, the branch circuit overcurrent devices shall be located in a readily accessible location.
  10. j Pull Box Sizing, Distance between Raceways: A pull box contains two 4 inch raceways on the left and two 2 inch raceways on the top. What is the minimum distance between the two 4 inch raceways that contain the same conductors?
  11. k (250) An additional electrode shall suppleent a metal underground water pipe. Where the supplemental electrode is a made electrode as in Section 250-83(c) or (d), that portion of the bonding jumper that is the sole connections to the supplemental grounding electrode shall not be required to be larger than _____ wire.
  12. l (240) Fuseholders for cartridge fuses shall be so esigned that it is difficult to put a fuse of any given class into a fuseholder that is designed for a _____lower, or _____ higher, than that of the class to which the fuse belongs.
  13. m Entrances to rooms and other guarded locations containing exposed live parts shall be marked with conspicuous ____ forbidding unqualified persons to enter.
  14. n A _____ switch is a manually operated device used in conjunction with a transfer switch to provide a means of directly connecting load conductors to a power source and of disconnecting the transfer switch.
  15. o When normally enclosed live parts are exposed for inspection or servicing, the working space, if in a passageway or general open space, shall be suitably _____.
  16. p (215)The feeder conductor ampacity shall not be less than that of the service-entrance conductors where the feeder conductors carry the total load supplied by service-entrance conductors with an ampacity of ____ amperes or less.
  17. q The Code prohibits damage to the internal parts of electrical equipment by foreign material such as paint, plaster, cleaners, etc. Precautions must be taken to provide protection from the detrimental effects of paint, plaster, cleaners, etc. on the internal parts of ______ and ______.
  18. r What is the area in square inches for a No. 10 THW?
  19. s If a 250kcmil wire is run through a 3 inch raceway entry in the wall opposite to a removable cover, the distance from that cover must not be less than _______.
  20. t (225) If festoon lighting exceeds a span of ____ feet, messenger wires shall support the conductors.
  21. u (250) Stainless steel ground rods shall not be less than _____ in diameter.
  22. v (230) Service heads for service raceways shall be ______.
  23. w Openings in ventilated dry-type _____ or similar openings in other equipment over 600 volts shall be designated so that foreign objects inserted through these openings will be deflected from energized parts.
  24. x (225) Conductors for ____ lighting shall be of the rubber-covered or thermoplastic type.
  25. y Pull Box Sizing, Horizontal Dimension: A junction box contains two 3 inch raceways on the left side and one 3 inch raceway on the right side. The conductors from one of the 3 inch raceways on the left are pulled through the 3 inch raceway on the right wall. The other 3 inch raceways conductors are pulled through ta raceway at the bottom of the pull box. What is the horizontal dimension of this box?
  26. z (230) Each ______ service conductor shall have overload protection.
  27. aa (225) Communications conductors shall be mounted not less than ____ inches below power conductors rated over 300 volts supported on poles.
  28. ab (230) As used in Section 230-95, the rating of the service disconnecting means is considered to be the rating of the largest _____ that can be installed or the highest continuous current trip setting for the actual overcurrent protection device installed in a circuit breaker is rated or can be adjusted.
  29. ac (210)Multiwire branch circuits shall supply only line to _____ loads
  30. ad (210)At least _____ wall switch-controlled lighting outlet(s) shall be installed in every dwelling unit habitable room and bathroom.
  31. ae Conductors larger than No. 4/0 are measured in _____.
  32. af Box Fill Requirements: Fixture wires smaller than NO. 14 from a domed fixture or similar canopy are considered as ______ conductor
  33. ag (240) No overcurrent protection device shall be connected in series with any conductor that is intentionally grounded, except where the overcurrent protection device opens all conductors of the circuit including the _____ conductor, and is so designed that no pole can operate independently.
  34. ah (230) Service heads must be located _____.
  35. ai (Article 100) A junction box above a suspended ceiling that has removable panels is considered to be _______.
  36. aj (225) Lamps for outdoor lighting shall be below all _____, transformers or other electrical utilization equipment.
  37. ak (210)The 24 inch dimension required in a dwelling unit countertop is measured along the wall line or center line, and the intent is that there be a receptacle outlet for every _____linear feet or fraction thereof of counter length.
  38. al Number of Conductors in an Outlet Box: Using Table 314-16a, how many No. 14 THHN conductors are permitted in a 4 x 1 ½ round box?
  39. am (240) Overcurrent protection for conductors and equipment is provided to ______ the circuit if the current reaches a value that will cause an excessive or dangerous temperature in conductors or conductor insulation.
  40. an (230) Where individual open conductors are not exposed to the weather, the conductors shall be mounted on _____knobs.
  41. ao Concrete, brick, or tile walls shall be considered as _____, as it applies to working space requirements.
  42. ap (240) Cartridge fuses and fuseholders shall be classified according to _____ranges.
  43. aq A system or circuit conductor that is intentionally grounded is a(n)_____ This conductor is often called a neutral conductor in the field, and is identified with the color white or gray.
  44. ar (250) A grounding connection shall not be made to any grounded circuit conductor on the ____ side of the service disconnecting means except as permitted for separately derived systems or separate buildings.
  45. as What is the area in square inches for a No. 12 RHH (with outer cover)?
  46. at How many #10 THHN are permitted in a 4 x 1 ½ square box?
  47. au (225) Overhead branch circuit and feeder conductors shall not be installed _____ openings through which materials may be moved, such as openings in farm and commercial buildings, and hall not be installed where they will obstruct entrance to these building openings.
  48. av A junction box contains two 2 inch raceways on the left side and two 2 inch raceways on the top. What is the distance from the bottom to the top wall?
  49. aw (230) There shall be no more than _____ disconnects installed for each service, or for each set of service-entrance conductors as permitted in Section 230-2 and 230-40.
  50. ax Table 314-16 does not take in to consideration the volume of _____.
  51. ay A ______ location may be temporarily subject to dampness and wetness.
  52. az Working space distances shall be measured from the _____ of equipment or apparatus if such are enclosed
  53. ba (220) Feeder conductors for new restaurants shall not be required to be of ______ ampacity than the service-entrance conductors.
  54. bb (210)In dwelling units, when determining the spacing of general use receptacles, ____ on exterior walls are not considered wall space.
  55. bc (230) Individual open conductors and cables other than service-entrance cables shall not be installed within _____ feet of grade level or where exposed to physical damage.
  56. bd The 2011 NEC defined ______ as all conductors between a source of power from a battery, a solar voltaic system, generator, transformer, or converter windings, and the final branch circuit overcurrent protections device(s).
  57. be (220) The feeder demand load for four 6 kw cooktops is _____ kW.
  58. bf (230) The requirement for maintaining a 3 foot vertical clearance from the edge of the oof shall not apply to the final conductor span where the service drop is attached to ______.
  59. bg Box Fill Requirements: One or more internal cable clamps are considered as _____ conductors based on the ____ conductor that enters the box
  60. bh Can a round 4 x ½ box marked as 8 cubic inches with manufactured cable clamps supplied with 14/2 NM be used with a fixture that has two No. 18 TFN and a canopy cover?
  61. bi Determine the minimum cubic inches required for two No. 10 TW passing through a box, four No. 14 THHN terminating, two No. 12 TW terminating to a receptacle, and one No. 12 equipment bonding jumper from the receptacle to the box.
  62. bj Pull Box Sizing, Vertical Dimension: A junction box contains two 3 inch raceways on the left side and one 3 inch raceway on the right side. The conductors from one of the 3 inch raceways on the left are pulled through the 3 inch raceway on the right wall. The other 3 inch raceways conductors are pulled through ta raceway at the bottom of the pull box. What is the vertical dimension of this box?
  63. bk (220) For each farm building or load supplied by _____ or more branch circuits, the load for feeders, service-entrance conductors, and service equipment shall be computed in accordance with demand factors not less than indicated in Table 220-102.
  64. bl (240) Flexible cords approved for use with listed appliances or portable lamps shall be considered as protected by a 20 ampere circuit breaker if they are ____.
  65. bm (230) Where the service disconnecting means is mounted on a switchboard having exposed busbars on the back, a raceway shall be permitted to terminate with a _____.
  66. bn (210)The recommended maximum total voltage drop on both the feeders and banch circuits is _____ percent.
  67. bo (240) Where an orderly shut down is required to minimize hazard() to personnel and equipment, a system of coordination based on two conditions shall be permitted. Those two conditions are (10______short-circuit protection, and (2) ______ indication based on monitoring systems or devices.
  68. bp An outlet intended for the direct connection of a lampholder, a lighting fixture, or a pendant cord terminating in a lampholder is a(n) _____.
  69. bq When conductors enter an eclosure opposite a removable cover, the distance from where the conductors enter to the removable cover determined using Table _____ (1 terminal column)
  70. br If we have a 2 inch rigid metal conduit and we want to install three THHN aluminum compact conductors, what is the largest aluminum compact conductor permitted to be installed?
  71. bs ____ branch circuits supply energy to one or more outlets to which appliances are to be connected.
  72. bt Outlet Box Size: What size outlet box is required for six No. 12 THHN conductors, and three No. 12 THW conductors?
  73. bu (210)Grade-level portions of ________and _______ accessory buildings used for storage or work areas shall have ground-fault ciruit interrupter protection for all 15 and 20 ampere, 125 volt receptacles.
  74. bv So constructed that dust will not enter the enclosing case under specified test conditions is known as _____.
  75. bw (230) In a multiple-occupancy building, each occupant shall have access to its own service_____.
  76. bx (230) The service disconnecting means shall plainly indicate whether it is in the _______ position.
  77. by (210)A single receptacle installed on an individual branch circuit must be rated at least _____ percent of the rating of the circuit.
  78. bz (210)All 125 volt, single phase 15 and 20 ampere receptacles installed in bathrooms of guest rooms in hotels/motels, dwelling units, and office buildings shall have ____________for personel.
  79. ca A 200 ampere feeder installed in rigid nonmetallic conduit schedule 80, has three No. 3/0 THHN, one No. 2 THHN, and one No. 6 THHN. What size raceway is required?
  80. cb An apparatus enclosed in a case that is capable of withstanding an explosion of specified gas or vapor that may occur within it, and of preventing the ignition of a specified gas or vapor surrounding the enclosure by sparks, flashes, or explosion of the gas or vapor within, and that operates at such an external temperature that a surrounding flammable atmosphere will not be ignited is defined as _____.
  81. cc What size outlet box is required for 14/3 type NM cable (with ground) that terminates on a switch, with 14/2 NM cable that terminates on a receptacle, if the box has internal cable clamps factory installed?
  82. cd When all conductors are the same size, Table _______ can be used to determine the number of conductors permitted in the outlet box, or determine the size outlet box required for the given number of conductors
  83. ce A 3 inch schedule 40 PVC raceway contains seven No. 1 RHW conductors without outer cover. How many No. 2 THW conductors may be installed in this raceway with the existing conductors?
  84. cf A qualifying term indicating that there is a purposely introduced delay in the tripping action of the circuit breaker, which delay decreases as the magnitude of the current increases, is defined by the Code as a _____ circuit breaker.
  85. cg (240) Markings on circuit breakers required by the Code shall be permitted to be made visible by removal of a _____ or cover.
  86. ch A device or group of devices that serves to govern in some predetermined manner the electric power delivered to the apparatus to which it is connected is a ________
  87. ci A junction box contains two 2 inch raceways on the left side and two 2 inch raceways on the top. What is the distance between the 2 inch raceways that contain the same conductors?
  88. cj Understanding Chapter 9 Tables: When equipment grounding conductors are installed in a raceway, the actual area of the conductor must be used when calculating raceway fill. T/F
  89. ck (240) Conductors supplying a transformer shall be permitted to be tapped without overcurrent protection at the tap where the conductors supplying the _____ of the transformer have an ampacity at least 1/3 the rating of the overcurrent device protecting the feeder conductors.
  90. cl Box Fill Requirements: Each yoke or strap containing one or more devices or equipment is considered as ____ conductors, based on the ______ conductor that terminates on the yoke.
  91. cm (240) Where used as switches in 120-volt and 277-volt fluorescent lighting circuits, circuit breakers shall be marked ______.
  92. cn An enclosure or device so constructed that a beating rain will not enter is _______.
  93. co Equipment enclosed in a case or cabinet that is provided with a means of sealing or locking so that live parts cannot be made accessible without opening the enclosure is said to be _______.
  94. cp The minimum headroom of working spaces about motor control centers shall be _____.
  95. cq Understanding Chapter 9 Tables: When a raceway does not exceed 24 inches, the raceway is permitted to be filled to _____ of its cross-sectional area.
  96. cr (250) _____on equipment to be grounded shall be removed from contact surfaces to ensure good electrical continuity.
  97. cs Box Fill Requirements: Each conductor that originates outside the box and terminates or is spliced within the box is considered as ____ conductor.
  98. ct (250) What size copper grounding electrode conductor is required for a service that has three sets of 500 Kcmil copper per phase?
  99. cu A single panel or group of panel units designed for assembly in the form of a single panel is called a _______
  100. cv (225) Where buildings exceed three stories, overhead lines shall be arranged so that a clear space at least 6 feet wide will be left either adjacent to the buildings or beginning not over 8 feet from them to facilitate the _____ when necessary for fire fighting.
  101. cw (210)A branch circuit rated 20 amps serves four receptacles. The rating of the receptacles must not be less than _____ amperes.
  102. cx A round 3 x 1 ½ box has a volume of 6 cubic inches and has factory internal cable clamps. Can this pancake box be used with a lighting fixture that has a domed canopy? Thee branch circuit wiring is 14/2 NM sheath cable and a paddle fan has three fixture wires and one ground wire all smaller than No. 14
  103. cy The temperature rating associated with the ampacity of a _____ shall be so selected and coordinated so as to not exceed the lowest temperature rating of any connected termination, conductor, or device.
  104. cz A junction box contains two 2 ½ inch raceways on the left side and one 2 ½ inch raceway on the right side. The conductors from one 2 ½ inch raceway are pulled through the raceway on the righ wall. The other 2 ½ inch raceway conductors (on the side) are pulled through a 2 ½ inch raceway at the bottom of the pull box. What is the distance from the left wall to the right wall?
  105. da (220) The maximum unbalanced feeder load for household electric dryers shall be calculated at ____ percent of the demad load as determined by Table 220-54.
  106. db A junction box contains two 2 ½ inch raceways on the left side and one 2 ½ inch raceway on the right side. The conductors from one 2 ½ inch raceway are pulled through the raceway on the righ wall. The other 2 ½ inch raceway conductors (on the side) are pulled through a 2 ½ inch raceway at the bottom of the pull box. What is the distance from between the raceways that contain the same conductors?
  107. dc Pull Boxes, Junction Boxes and Conduit Bodies must be sized according to Section _____
  108. dd What size square outlet box is required for: one 12/2 NM cable that terminates on a switch, one 12/3 NM cable that terminates on a receptacle, and the box has manufactured cable clamps.
  109. de A(n) ______ is a point on a wiring system where current is taken to supply equipment that uses electricity.
  110. df (Article 100) Acceptable to the authority having jurisdiction means that the equipment has been _____.
  111. dg Pull Box Sizing, Horizontal Dimension: A pull box contains two 4 inch raceways on the left and two 2 inch raceways on the top. What is the horizontal dimension of the box?
  112. dh (220) The demand factors listed in Table 220-42 shall not be applied in determining the number of _____ for general illumination.
  113. di (230) Service-lateral conductors are required to be insulated (except the grounded conductor) when it is _______.
  114. dj It is permitted to omit one equipment grounding conductor and not more than ______ that enter a box from a fixture canopy.
  115. dk (210)The total rating of utilization equipment fastened in place shall not exceed _____ percent of the branch circuit ampere rating, where the circuit supplies receptacles for cord-and-plug connected equipment.
  116. dl The number of conductors permitted in a raceway is dependent on _____(3 things)
  117. dm (240) Plug fuses of 15 amperes and lower ratings shall be identified by a _____ configuration of the window, cap, or other prominent part to distinguish them from fuses of higher ampere ratings.
  118. dn (Article 90)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.
  119. do The highest current at rated voltage that a device is intended to interrupt under standard test conditions is the ______.
  120. dp A system intended to provide protection of equipment from damaging line-to-ground-fault currents by operating to cause a disconnecting means to open all ungrounded conductors of the faulted circuit is defined as _____.
  121. dq Where switches, cutouts or other equipment operating at 600 volts nominal, or less are installed in a room or enclosure where there are exposed live parts or exposed wiring operating at over 600 volts, nominal, the high-voltage equipment shall be effectively separated from the space occupied by _____ by a suitable partition, fence, or screen.
  122. dr Compliance with the provisions of the Code will result in _____. (Article 90)
  123. ds What size square box is required for 6 No. 14 THHN and 3 No. 14 THW?
  124. dt Design B, C, D, or E motors shall be wired with conductors having an insulation rating of at least _____ degrees C, and the conductor shall be sized based on the 75 degree C ampacity as listed in Table 310-15(B)(16) (formerly 310-16)
  125. du (220) For other than dwelling units, the feeder and service load calculation for track lighting is to be determined at 150 volt-amperes for every ____ feet of track installed.
  126. dv (230) The _____ clearances for all service drop conductors shall be based on a conductor temperature of 60 degrees F, no wind; with final unloaded sag in the wire, conductor, or cable.
  127. dw (230) Circuits used only for the operation of fire alarm, other protective signaling systems, or the supply to fire pump equipment shall be permitted to be connected on the _____ of the service overcurrent protection device where separately provided with overcurrent protection.
  128. dx A unit of an electrical system, which is intended to carry, but not utilize electrical energy. Is a______.
  129. dy (210)Receptacle outlets in a dwelling unit must be installed within _____ inches of the outside edge of each basin and the receptacle must be located on a wall that is adjacent to the basin location.
  130. dz What size rigid metal nipple is required for three No. 4/0 THHN, one No. 1/0 THHN and one No. 4 THHN?
  131. ea Identification of the grounded conductor terminal on a device shall be by a metal or metal coating substantially white in color or the word ______ located adjacent to the identified terminal.
  132. eb A separate portion of a conduit or tubing system that provides access through a removable cover(s) to the interior of the system at a junction of two or more sections of the system or at a terminal point of the system is defined as a(n)
  133. ec Understanding Chapter 9 Tables: When all the conductors are the same size and insulation, the number of conductors permitted in a raceway can be determined simply by looking at the Tables in ______.
  134. ed What is the area in square inches of a No. 8 bare solid?
  135. ee (230) When ground-fault protection is provided for the ____ disconnecting means and interconnection is made with another supply system by a transfer device, means or devices may be needed to ensure proper ground-fault sensing by the ground-fault protection equipment.
  136. ef (230) To supply power to a single-phase water heater, the size of the underground service lateral conductors shall not be smaller than _____.
  137. eg (220) When a calculation results in a fraction of ampere of ____ or more, we "round up" to the next ampere.
  138. eh The necessary equipment, usually a circuit breaker or switch and fuse and their accessories, intended to constitute the main control and cutoff of the supply is referred to as _____.
  139. ei Equipment approved for use in dry locations shall be protected against permanent damage from the weather during _____.
  140. ej A value assigned to a circuit or system for the purpose of conveniently designating its voltage class such as 120/240 volts is called ______voltage.
  141. ek (220) When sizing a feeder, the appliance loads in dwelling units can apply a demand factor of 75 percent of nameplate ratings for ____ or more appliances fastened in place on the same feeder.
  142. el (240) Fuseholders of the Edison-base type shall be installed only where they are made to accept _____ fuses by the use of adapters.