49. Flexible Metallic Tubing (FMT) can be used in which of the following places or conditions.

A. In hoistways

B. Under ground for direct earth burial, or embedded in poured concrete or aggregate

C. For system voltages of 1000 volts maximum

D. In lengths over 100 ft

50. In dwelling units the lighting demand factor of the first 3000 VA or less is ______________ Percent.

A. 50

B. 80

C. 100

D. 125

51. Where a change occurs in the size of the ungrounded conductor, a similar change shall be permitted to be made in the size of the ___________ conductor.

A. grounded

B. grounding

C. bonding

D. neutral

52. The dwelling has a floor area of 1500 sq. ft. exclusive of an unfinished cellar not adaptable for future use, unfinished attic, and open porches. It has two 20-A small appliance circuits, one 20-A laundry circuit, two 4-kW wall-mounted ovens, one 5.1-kW counter-mounted cooking unit, a 4.5-kW water heater, a 1.2-kW dishwasher, a 5-kW combination clothes washer and dryer, six 7-A, 230-V room air-conditioning units, and a 1.5-kW, 230 V permanently installed bathroom space heater. Assume wall-mounted ovens, counter-mounted cooking unit, water heater, dishwasher, and combination clothes washer and dryer kW ratings equivalent to kVA. Assuming the dwelling is feed by a 120/240-V, 3-wire, single-phase service what is the total calculated load in VA and the minimum required service rating required.

A. 19,200 VA, 100 A

B. 25,700 VA, 110 A

C. 29,200 VA, 122 A

D. 39,200 VA, 175 A

53. Vegetation such as trees shall _______________ for support of overhead conductor spans.

A. be used only temporarily

B. be branches minimum 4 inches in diameter

C. not be used

D. be pruned clean and used

54. The electric vehicle supply equipment shall be located for direct electrical coupling of the EV con- nector (conductive or inductive) to the electric vehicle. Unless specifically listed and marked for the location, the coupling means of the electric vehicle supply equipment shall be stored or located at a height of not less than ____________ above the floor level for indoor locations and ____________ above the grade level for outdoor locations.

A. 24 in , 36 in

B. 18 in , 24 in

C. 36 in , 48 in

D. any height is acceptable

55. Openings through which conductors enter a box shall be _________________.

A. sealed

B. clamped shut

C. open for ventilation

D. closed in an approved manner

56. Overhead Service, where not in excess of 1000 volts, nominal, shall follow minimum clearances measured from ______________.

A. the top of the mast

B. final grade

C. the guy wire anchor

D. the foundation wall

57. Electrical equipment shall be firmly secured to the surface on which it is mounted, and wooden plugs driven into holes in masonry, concrete, plaster, or similar materials shall _________________.

A. Be oversized to provide a tight fit.

B. be used to insulate the equipment from the mounting surface.

C. a minimum of 3/4" diameter

D. not be used

58. A receptacle installed outdoors in a location protected from the weather or in other damp locations shall have an enclosure for the receptacle that is weatherproof when the receptacle is ________________.

A. being used by a cord plugged into it

B. open

C. covered

D. energized

59. What is the adjustment factor percentage for more than three current-carrying conductors in a raceway or cable if there are 4 current-carrying conductors in a 3/4 inch EMT.

A. 45

B. 50

C. 70

D. 80

60. All storage or instantaneous-type water heaters shall be equipped with a temperature-limiting means in addition to its control thermostat to disconnect all ________________________.

A. connected conductors

B. ungrounded conductors

C. water supply systems

D. none of the above