Electrical

32. A non metallic sheathed cable of 60 degree rated wires feeds a panel that needs grounding. It is futillized at 60 amperes. What size copper equipment grounding wire is REQUIRED?

#10 250.122

58. What's the smallest wire allowed by the NEC for Class 1 power limited circuits?

18 AWG 725.49 (A)

92. A 4-inch rigid metal conduit that is to enclose Type THW wires, will have a bending radius of NOT below how many in?

24 Table 2

86. The smallest working space headroom height form new set ups for service equipment and switchboards is?

78 inches 110.26 (A) (3)

80. Where are tags placed to identify that equipment is being worked on and must NOT be operated?

All points where the equipment can be energized.

20. Service mounted fixtures which contain ballast are to be mounted on a low density cellulose fiber board ceiling. They MUST be a minimum of how far from the surface of the fiber board?

1 1/2 inch 410.136 (B)

72. When boring a hole through a wood framing member, what dimensional space MUST be maintained from the nearest edge of the member?

1 1/4 in 300.4 (A) (1)

29. When using threaded fittings, in a class I division I areas a minimum of how many threads use be engaged?

5 500.8 (E) (2)

57. An industrial (loft) assembly area is 100' x 300'. What's the general lighting load?

60,000 VA Table 220.12 (word for word)

37. Power limited wire MUST be what smallest height above the floor?

7 feet 760.130 (B) (1)

52. What's the smallest current rating for a control switch for a neon sign transformer at the rating of the transformer is 10 amps?

20 amps 600.6 (B)

19. A hospital has a grounding point in a critical care area adjacent to the patient vicinity. What is the smallest ground wire size allowed?

#10. 517.19 (D)

9. A Pool has an underwater speaker system. The PVC conduit runs to the forming shells must have an insulated copper wire sized at?

#8. 680.27 (A) (3)

85. As a general rule, open wires of Class II and III signaling circuits will be separated by AT LEAST how many inches from wires of any electrical light?

2 inches 725.136 (I)

28. A jewelry store has two 15 foot show windows, one on either side of the entrance way. What's the smallest number of receptacles necessary to service these windows?

2 per window (4 - 2 per window) 210.62

82. An underground service sub-feed to an outbuilding runs parallel to a pool. The smallest horizontal space from a pool is?

5 ft 680.10

79. What's the smallest head room for service equipment that is 5 ft in height and is operating at 600 volts or less?

6 1/2 ft 110.26 (A) (3)

13. What will be the smallest space multiple rods or piped grounding electrodes?

6 foot. 250.53 (A)(3)

76. Portable lamp holders utilized in a Class I commercial garage will NOT have plugs or?

A Switch 511.4 (B) (2)

35. A main distribution panel supplies power to a sub panel that has a 500 amp over current protective device as its disconnecting means. What's the smallest size copper grounding wire for this sub panel?

#2. Table 250.122

31. A 480/277 volt feeder utilized at 400 amps is run from building 1 of building 2. The branch circuits originate in the 2nd building and serve mostly motor loads in that building. What's the smallest size copper grounding wire allowed to be run t=in the 2nd building?

#3 AWG Table 250.122

98. What's the largest cord-and plug connected load that can be supplied by a 15-ampere rated duplex receptacle on a general-purpose 15- or 20- ampere branch cord?

12 amperes 210.23 (A) (1)

41. A paddle fan to be set up on a screened room ceiling support beam above an outdoor pool MUST be what smallest height above the pool water level?

12 feet 680.22 (B) (1)

14. What's the largest size branch circuit allowed to feed the line side of a transformer for a 30-volt lighting system?

25 amperes. ? 411.7

40. What are the REQUIRED number of surge arrestors for a 4 wire wye-connected grounded system for an industrial plant where thunder storms are frequent?

3 280.3

45. According to the NEC, what's the necessary number of running overload relays on a 3-phase motor that is not protected by another approved means?

3 Table 430.37

67. For enclosures of wires of over 600 volts a metal underground box cover MUST weigh a smallest of how many pounds to meet the needments that all enclosures be lock?

100 pounds 110.31 (D) 314.30 (D)

24. What's the voltage to ground on the "A" phase of a 240 volt, 3 phase, 4 wire system?

120 volts

88. Refer to figure 2021el.

120/240 3 wire service

51. For a dry cell battery to be considered a class tow power supply what's the largest allowable voltage?

30 725.121 (A) (5)

78. What's the largest length flexible cord that can be utilized to connect an electrically-operated kitchen waste disposal?

36 in. 422.16 (B) (1) (2)

96. Refer to number 10 on Figure 201 1 el. The largest number of circuit breakers is?

42

74. Branch circuit wires are to be run through an end-to-end assembly of fluorescent fixtures. The wires will be closer than 3 in. The the ballast. What's the LOWEST temperature rating allowed for the branch circuit wire insulation?

90 degrees 410.68

17. A single family residential has a net calculation load of 22,800 VA. Voltage is 240 volts, single phase. The feeder load is?

95 amps. Math! Ugly's pg. 23

49. Cable splices made in a cable trays will be?

Accessible 392.56

30. A 3 phase motor controller is also the disconnect it is REQUIRED to open?

All 3 phases 430.84. Exception

59. The basic electrical unit of current flow is the?

Ampere Ugly's pg. 1

81. A device for measuring current is called?

An ammeter 82. An underground service sub-feed to an outbuilding runs parallel to a pool. The smallest horizontal space from a pool is?

55. A branch circuit that provides a 15 amp, 125 volt circuit to a residential bedroom will be protected by?

Arc fault protection 210.12 (A)

93. New raised floor set up cables for info technology equipment may have a listing of?

DP 645.5 (E) (3) (a)

56. Wiring to elevator or wheelchair lift door interlock conductor will be rated?

Flame retardant and suited for temperatures of not below 200 degrees C 620.11 (A)

18. One advantage a 24 volt device has over a 12 volt device is that it?

Has a lower current draw. Science!

61. When are unutilized openings in boxes or raceways resultively closed?

If listed material that has equivalent thickness is utilized to close the opening of a box or raceway. 110.12 (A)

22. What color is utilized to mark the wire having the higher voltage to ground for a switch board or panel board supplied from a 3-phase, 4 wire delta system?

Orange. 110.15

99. Refer to Figure 2032el. The letters "OL" stand for?

Overload. Not a diagram

8. Alternating current means the direction?

Reverses at intervals. Science!

53. Mandatory rules of the NEC are characterized by the use of the terms?

Shall or shall not. 90.5 (A)

62. Lighting receptacles for indoor residential unit stairways MUST be controlled by a wall switch at each floor level where the difference between floor levels is?

Six or more steps. 210.70 (A) (2) (c)

71. Ampacity is the current in amperes a wire can carry continuously under the conditions of use without greater than its?

Temperature rating 100 (ampacity)

70. The voltage rating of electrical equipment utilized on a circuit to which it is connected will NOT be below?

The nominal voltage of the circuit. 110.4

91. Branch circuits that supply inductive lighting loads (ballasts, transformers, or auto-transformers) are calculated by the?

Total ampere rating of the units. 220.18 (B)

84. The feeder demand factor for elevators is applied?

To multiple elevators served by the same feeder. Table 620.14

11. An electromotive force is measured in?

Volts. Science! Ugly's pg. 1

48. An electric discharge fixture having a mogul base lamp holders is connected to a 30 ampere branch circuit by a cord and plug connection, the rating of the connector will NOT be below what percent of the fixture load current?

125% 410.62 (C) (2)

60. What's the approximate voltage drop of a 540 foot run of coated 4/0 copper at 480 volts, single phase with a load of 200 amps?

13.5 volts Ugly's pg 50 & 71 or Ohms law

33. What's the ampacity of three 1 AWG THW copper wires in a raceway at an ambient temperature of 86 degrees F?

130 amperes 310.15 (B) (2) (a)

39. A farm has 240 volt, single phase, dairy set up with a load of 18,000 VA, a second load of 16,000 VA, and a third load of 10,000 VA. What's the total load in amps?

152 amps Table 220.103

43. What's the largest load allowed on a cord and plug connected neon sign circuit, if a 20 amp breaker is utilized?

16 amps 600.5 (B)

25. A 2 inch conduit enters the east side of a pull box and exits on the west side of the same box. The smallest space from the east wall the west wall of the pull box is how many inches?

16 inches 314.28 (A) (1)

38. What's the smallest length of a rod or pipe electrode?

8 feet 250.52 (A) (5)

26. Other than class II conductor, lighting systems operating at 24 volts will have their transformer secondary current limited to a largest of?

25 amperes 411.3 (A)

66. A class 1 power limited circuit has a largest voltage of?

30 volts 725.41 (A)

77. A 10-hp, 3-phase squirrel cage motor will draw how many amperes at 208 volts?

30.8 Table 430.250

90. Transformer vaults REQUIRE a sill or curb surrrounding the vault that is the smallest height of?

4 inch 450.43 (B)

75. All of the subsequent are necessary by OSHA when debris is dropped through a hole in the floor without the use of chutes, except?

Heavy plastic sheeting hanging within the boundaries of the drop area to the floor above to contain the dust and loose debris.

63. A thermostatically controlled switching device is to serve the disconnecting means for fixed electric space heating equipment. The switch MUST meet what condition to be utilized for this purpose.

It must have a marked "off" position. 424.20 (A) (1)

65. A 60 hp motor is set up in a Class 1 Zone 2 atmosphere. The approved boding technique is?

Motor to ground 501.30 (1) (A)

42. Enclosures controlled by lock and key will be considered accessible to?

Qualified persons only. 110.26 (F)

64. A transformer vault has an automatic sprinkler system supplying fire protection. The vault door will have a smallest fire rating of how many hours?

1 hour 450.43 (A) exception

12. The ampacity of a 15-foot feeder tap wire that supplies a panel board must be a minimum of?

1/3 the ampacity of the feeder. 240.21 (B) (2) (1)

100. What's the smallest length of a residential unit hallway for which a receptacle is REQUIRED?

10 FT 210.52 (H)

6. What's the largest over current protection for a branch circuit that supplies a single non-motor operated utilization equipment in an occupancy? The utilization rating of 20 amps.

20 amperes. 210.22

16. What's the smallest depth for direct burial cable operating at 600 volts or less in all unspecified locations?

24 inches. Table 300.5

2. A 24-volt system needs a smallest working depth of?

3 feet Table 110.26 (A) (1)

73. Where ungrounded wires enter a raceway in a cabinet, the wire will be protected by an insulating bushing if the wires are of what smallest size?

#4 300.4 (G)

68. The largest ungrounded service entrance wire for an AC system is 350 kcmil copper. What's the smallest size copper wire that can the sole connection to a concrete-encased electrode?

#2 Table 250.66

87. An open fluorescent lighting fixture in a Class I commercial garage is set up over lanes through which vehicles are commonly driven. The fixture MUST be AT LEAST how far above the floor?

12 ft 511.7 (B) (1) (b)

47. Each panel board will be individually protected on the supply side by NOT above how many circuit breakers?

2 486.34 (A)-Deleted

15. A bedroom in a residential will have a 15 amp or 20 amp receptacle set up in every wall space?

2 foot or more in width. 210.52 (A) (2) (1)

89. What's the smallest separation between non power limited and power limited wire?

2 inch 725.136 (I)

34. A 600 volt, 20 amp transformer will have an individual over-current device on the primary side rated at a largest of how many amps? No over current protection is utilized on the secondary side of the transformer.

25 amps Table 450.3 (B)

21. What's the largest allowed branch circuit overcurrent protection for a 240 volt, 4500 watt, 50 gallon water heater?

25 amps. 422.13

10. What's the largest ampacity/breaker size for an aluminum AWG type TW #10

25. 310.15 (B) (16)

83. Double locknuts MUST be utilized on rigid metal conduits when voltage exceed how many volts to ground?

250 250.97 Exception (2)

44. Exposed electrical non metallic tubing is allowed in any building NOT greater than how many floors above grade?

3 362.10 (1)

69. Unless specifically listed otherwise, what's the largest spacing between supports for 4-inch rigid non-metallic conduit?

7 ft Table 352.50

7. An underwater junction box for a 12-volt lighting system for a swimming pool is connected with a PVC conduit, it is a flush desk box to meet the NEC it MUST?

Be filled with potting compound. 680.62 (B) (2) (a)

23. Metal conduits entering service equipment enclosure with concentric or eccentric knock outs containing service wires will have?

Bonding bushings and jumpers. 250.92 (B) (4)

95. Where can flat cable assemblies be utilized?

Branch circuits 322.10 (1)

94. Areas having limited egress that are subject to the accumulation of toxic or flammable contaminants or an exogenous deficient atmosphere are considered by OSHA to?

Confined spaces

3. All of the subsequent are acceptable forms of hearing protection EXCEPT?

Cotton inserted in the ear. Common Sense

1. Wiring located within the cavity of a fire-rated ceiling assembly, but NOT considered part of the fire-rated assembly, is allowed to be?

Supported by independent support wires. 300.11 (A) (1)

50. A single phase, 1.5 horse power motor name plate voltage is 120 volts single phase at 90% efficiency rating assume a power factor of 85%. What's the full load current rating for this motor?

12.2 amps Ugly's pg 15

4. If metal underground pipe is utilized for grounding, it will have a smallest of how many feet in contact with the earth?

10 feet. 250.52 (A) (1)

54. What's the largest allowable fill area for a 9-inch wide cable tray where all cables are smaller than 4/0 AWG?

10.5 square in Table 392.22 (A)

27. A transformer has a 75-KVA rating, and is 460 volts, 3 phase with an efficiency of 90 degrees. What's the ampacity necessary for the primary wire?

104.6 amps Math. Ugly's pg. 15

97. The load for the REQUIRED branch circuit set up for the supply of incandescent signs be computed at a largest of how many amperes?

20 600.5 (A)

36. An ungrounded wire can be identified by the color?

Black 250.119 & 200.6 & 200.7

46. If surge arrestor grounding wires are set up in metal (magnetic) raceways that are not continuous, they must be?

Bonded at both ends 250.64 (E) (1)

5. There are six current-carrying wires in a conduit. The bonding wire is?

Not counted in the adjustment fit factor. 310.15 (B) (6)