MASTER ELECTRICIAN PREP EXAM PART 2

1. Installations of electrical equipment in ships, railway vehicles, and aircraft are covered by the NEC.

2. Compliance with the NEC® shall result in installations which are efficient, adequate for good service,and free from hazard.

3. The Code may require new products, materials or constructions that may not yet be available at the time the Code is adopted.

4. The Code is written in an explicit manner and may be used as an instructional manual for untrained persons.

5. Installations of electrical equipment in recreational vehicles, mobile homes and floating buildings are covered by the NEC.

6. Limiting the number of circuits in a single enclosure does not minimize the effects of a ground fault in one circuit.

7. The use of either numbers shown in the SI system or in the inch-pound system shall constitute compliance  with the Code.

8. A reliable conductor used to ensure the required conductivity between metal parts which are to be electrically connected is called which of the following:

9. The current measured in amperes which a conductor can carry continuously under standard conditions without exceeding the conductor’s maximum temperature rating is called:

10. Limiting the total quantity of circuits in any given enclosure does which of the following:

11. Items in the Code that identify actions that are specifically required or prohibited are considered which of the following:

12. Two or more ungrounded conductors with equal voltage running between them and a grounded conductor is considered which of the following:

13. A single-family dwelling has three bathrooms each with the following: a lighting fixture, a fan, and one receptacle outlet. In one of the bathrooms, the lighting fixture, fan, and receptacle outlet are installed on a dedicated 20 ampere circuit. For this dwelling, the minimum number of 20 ampere circuits required to serve the bathrooms is which of the following:

14. One building is supplied power from another building on a non-industrial property with a single owner. The underground feeder is protected by a 100 ampere circuit breaker in the first building. Qualified persons are not always available to service the installation; therefore, the disconnecting means for the second building must be which of the following:

15. In a single-phase, 3-wire electrical system, the middle conductor must be which of the following:

16. In a 3-wire, single phase electrical system, the nominal voltage must be 120 volts between the ungrounded conductor and the neutral, and the volts between the two ungrounded conductors must be which of the following:

17. In a single-phase, 3-wire electrical system, the hot conductors are referred to as which of the following:

18. The current flowing through the neutral of a 120/240 volt 3-wire, single-phase electrical system is calculated as which of the following?

19. The exposed non-current carrying metal parts of a hand-held cord-and-plug drill must be grounded in which of the following scenarios:

20. If a rod electrode is required for grounding purposes and a layer of rock restricts the rod from being driven into the ground, which of the following alternate methods of installation shall be used:

21. The bonding jumper between a supplemental electrode and service equipment shall not be required to be larger then which of the following:

22. The maximum overcurrent device size required to protect a 5-foot length of 1-inch liquid tight flexible metal conduit with no equipment grounding conductors and ground listed fitting terminations is which of the following:

23. Terminals connected to a grounded conductor shall be identified in which of the following ways:

24. The receptacle example listed below which may be connected to a small appliance branch circuit is which of the following:

25. Based on the 2005 NEC, a 4-inch square metal box with a depth of 1 1/2 inches has a volume equal to which of the following:

26. Multiple equipment grounding conductors or equipment bonding jumpers entering a box count as how many total conductors:

27. Conductors must be protected from abrasion only at the exit point of a box, conduit body or fitting:

28. Where a cable enters a single-gang, non-metallic box through a cable knockout or opening, which of the following must be true:

29. Boxes in walls constructed of combustible material shall not extend beyond the finished wall surface:

30. In a straight-pull, multiple raceway, the length must be at least which of the following:

31. The total maximum bend for EMT conduit is which of the following:

32. EMT conduit shall be securely fastened within _______ of a junction box:

33. ENT must be secured at which of the following intervals:

34. The maximum trade size for flexible metal conduit is which of the following:

35. A nine foot run of FMC must be secured at which of the following intervals:

36. The minimum trade size allowed for RMC is which of the following:

37. Only one disconnecting means shall be allowed to disconnect a single generator.

38. For fixed electric space heating equipment consisting of resistance elements with a motor, the branch circuit conductor ampacity and the overcurrent rating of the protective device that supplies the equipment shall not be less than which of the following:

39. The disconnection means for fixed appliances within a ten-unit apartment building must be in which of the following locations:

40. If a GFI breaker is not provided to protect impedance heating, then the secondary voltage cannot exceed which of the following:

41. The installation of delta breakers is not allowed in which of the following:

42. When all clearance requirements are met, which type of lighting fixture may be installed in a clothes closet:

43. A 120 volt, cord and plug type window air conditioner supplied by a general purpose 20 amp branch circuit, cannot have a full-load current that exceeds which of the following:

44. A transformer vault that is protected by a halon system shall have a door with a minimum fire rating equal to which of the following:

45. Circuit conductors that supply power conversion equipment included as part of an adjustable-speed drive system must have an ampacity of which of the following:

46. The disconnection means for a 400 volt motor circuit must have an ampere rating of which of the following:

47. Lamp tie wires, mounting screws, and clips on light fixture glass must be grounded.

48. A 15 amp receptacle that is installed in a wet location must meet which of the following installation requirements:

49. Carnival rides cannot be located any closer in any direction from overhead power lines than which of the following:

50. Each patient bed in a hospital critical care unit must have at least how many of the following:

51. In places of assembly, the neutral for feeders for solid-state, 3-phase, 4-wire dimming systems are considered to be current-carrying conductors.

52. Sealed cans of gasoline may be stored in which of the following locations:

53. A hospital’s essential electrical system must be comprised of which of the following two separate systems:

54. A receptacle installed to provide electric power to a recreational vehicle must comply with which of the following configurations:

55. A processing room in a perfume manufacturing plant that houses fat and oil extraction equipment is considered which of the following:

56. A saw mill is an example of a Class III location.

57. In an aircraft hangar, there must be a minimum clear space from aircraft engines and fuel tank areas of which of the following:

58. Receptacles that provide shore power at marinas must be rated at a minimum of which of the following:

59. Of the hospital-grade receptacles installed in a patient bed location in a critical care unit, at least one of them must be connected to either the normal system branch circuit or an emergency system branch circuit that is supplied by a different transfer switch than the rest of the receptacles at that bed location.

60. The minimum service size per mobile home site in a mobile home park is which of the following:

61. A therapeutic tub used for the submersion and treatment of patients shall not be which of the following:

62. An electrical sign that uses incandescent lamps must be marked with the number of lampholders in the sign.

63. The bottom edge of an electrical sign must be at least 12 feet above an area that is accessible to vehicles.

64. Isolated parts that are no larger than 4 inches in any dimension and that are attached to a pool structure shall not require bonding if which of the following requirements is met:

65. Type NM cables are allowed for use to connect data processing equipment in underfloor wiring installations.

66. A means of disconnect must be provided for all data processing equipment in an information technology equipment room.

67. In order to be considered storable, a swimming pool cannot exceed 12 feet in any dimension.

68. Liquid tight flexible metal conduit for a hot tub installation shall be permitted if not more than which of the following lengths:

69. A disconnecting means must be provided for all HVAC equipment in an information technology equipment room.

70. A receptacle located within 20 feet of a swimming pool requires GFCI protection.

71. Unless listed otherwise, the minimum depth for an underwater lighting fixture is 18 inches below the water’s surface.

72. The disconnection means in a data processing room must be near the principal exit door.

73. Overcurrent protection for 18 AWG NPLFA conductors cannot exceed which of the following ratings:

74. Procedures for testing fiber optic equipment are established by the NEC.

75. A Class 1 power-limited circuit must be supplied by a power source that has a maximum rated output of which of the following:

76. If a normal power system fails, then the maximum delay allowed in a legally required emergency stand-by system before emergency power cuts on is which of the following:

77. A non-power limited fire alarm circuit cannot exceed which of the following:

78. When low-voltage fire alarm system cables are installed in a fire-resistant rated wall, which of the following are required:

79. A power system designed to prevent loss of power that could cause economic loss or business interruptions is designated as which of the following:

80. An emergency stand-by system must be designed to provide power within 10 seconds of a primary

81. Provided that an alternate power source is adequately rated, it can be used to carry emergency loads.

82. To warn emergency response personnel, which of the following must be used to indicate the type and location of on-site emergency power sources:

83. Emergency circuits cannot supply loads other than those required for emergency use.

84. In the alternate power source for emergency systems, which of the following are true:

85. A circuit that extends from a communication utility service terminal and includes a NIU is considered to be which of the following:

86. Communication components must be installed in a neat and workmanlike manner; consequently, the use of straps or staples on exposed cables is prohibited.

87. The bonding jumper for a communication grounding electrode and a power grounding electrode cannot be smaller than which of the following sizes:

88. If the communications lines are run underground through raceways, handholes or manholes where electric lines are present, then they must be separated from the power lines by which of the following:

89. If communications wiring is installed in a single-family home, which of the following requirements must be met:

90. Low and medium power network powered broadband circuit cables cannot be run in the same raceway:

91. Communication grounding electrodes and power grounding electrode systems must be connected by which of the following:

92. In a single-family dwelling where CATVP cable is stapled alongside floor joists, the cable may be run through an air plenum.

93. Communications wiring and cables cannot have a voltage rating over which of the following:

94. Grounding electrode conductors used for antennas may be connected to a metallic service raceway as a grounding means.

95. Disregarding any exceptions, direct buried coax must also be separated from power cabling by which of the following distances:

96. Coax grounding conductors cannot be any smaller than which of the following sizes:

97. The percentage area for one wire running in 2-inch RNC schedule 40 conduit is which of the following:

98. Three conductors with a total combined cross-sectional value of 0.0633 shall be run in which of the following sizes of flexible metal conduit:

99. The size of rigid metal conduit (RMC) required to enclose 18 #10 THWN copper conductors is which of the following:

100. In an installation containing three 350kcmil THWN copper conductors in 2 1/2-inch EMT, the conductors may become jammed.