81. Given: Service drop conductors passing over a swimming pool have a vertical clearance from the...

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Electrical Engineering

81. Given: Service drop conductors passing over a swimming poolhave a vertical clearance from the water surface of 18 ft. theseconductors must be located a minimum of ___ ft. horizontally fromthe outer edge of the swimming pool.
A. 0
B. 10
C. 15
D. 22.5
82. What is the full load current in amperes for a 1-hpsingle-phase, 115-volt, AC motor?
A. 2.1
B. 8
C. 8.4
D. 16
83. If a branch circuit supplies a single 14-amperenon-motor-operated appliance without an over current protectionrating, the rating of the over current protection shall not exceed_ percent of the appliance rated current.
A. 90
B. 100
C. 125
D. 150
84. What is the maximum overcurrent protection rate in amperespermitted for an appliance without a motor that has an input ratingof 40 amperes?
A. 30
B. 40
C. 50
D. 60
85. The overload protection for a 3-phase, 25 Hp, 480-volt motorshall be selected
A. from the motor nameplate full load current
B. from the full load current in table 430-150 of the NEC
C. from the locked-rotor current in table 430-150 of the NEC
D. as a percentage of the motor branch-circuit overcurrentprotection
86. Branch-circuit conductors that serve a 3-phase, 230-volt, 15ph induction-type motor shall have an allowance ampacity of atleast _ amperes.
A. 42
B. 46.2
C. 52. 5
D. 60.5
87. Disregarding exceptions, where the design and operation of agenerator does not prevent overloading the ampacity of theundergrounded phase conductors shall be at least __ percent ofthe name plate current rating of the generator.
A. 80
B. 100
C. 115
D. 125
88. A circuit that supplies a 1/2 -hp motor that operatesutilization equipment fastened in place in conjunction with otherloads shall be calculated by adding the sum of the other loads plus_ percent of the largest motor.
A. 100
B. 125
C. 150
D. 175
89. When the design and operation of the generator will preventoverloading the conductors shall not be less than >
A. the same hp as the generator
B. 100 percent of nameplate current
C. 115 percent of nameplate current
D. 115 percent of the hp of the generator
90. Transformers for sight located in an attic or soffit shallhave a permanent walkway of at least _ in. wide.
A. 12
B. 18
C. 24
D. 36

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4.3 Ratings (550 Votes)

81 Given Service drop conductors passing over a swimming pool have a vertical clearance from the water surface of 18 ft these conductors must be located a minimum of ft horizontally from the outer edge of the swimming pool A 0 B 10 C 15 D 225 Answer Overhead networkpowered broadband communication systems conductors minimum clearance is 225 ft from the waters edge of swimming See Answer

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