Chicago Electrical Exam

123 Questions | Total Attempts: 1258

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Chicago Quizzes & Trivia

Chicago Electrical Contractor Prep-Exam


Questions and Answers
  • 1. 
    A motor draws 165 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #2/0, what would the voltage drop be?
    • A. 

      4.4

    • B. 

      5.7

    • C. 

      6.5

  • 2. 
    A motor draws 83 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #3, what would the voltage drop be?"
    • A. 

      5.9

    • B. 

      7.2

    • C. 

      8.0

  • 3. 
    A motor draws 21amps at a voltage of 230 with a feeder ft. length of 160. The copper wire (75 degree C) size desired is #10, Which minimum size copper wire is permissible by code to use?"
    • A. 

      #10

    • B. 

      #8

    • C. 

      #6

  • 4. 
    A motor draws 32 amps at a voltage of 230 with a feeder ft. length of 150. The copper wire (75 degree C) size desired is #8, Which minimum size copper wire is permissible by code to use?"
    • A. 

      #8

    • B. 

      #6

    • C. 

      #4

  • 5. 
    A motor draws 85 amps at a voltage of 230 with a feeder ft. length of 160. The copper wire (75 degree C) size desired is #3, Which minimum size copper wire is permissible by code to use?
    • A. 

      3

    • B. 

      2

    • C. 

      1

  • 6. 
    A motor draws 21 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #10, Which minimum size copper wire is permissible by code to use?
    • A. 

      #10

    • B. 

      #8

    • C. 

      #6

  • 7. 
    A motor draws 47 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #8, Which minimum size copper wire is permissible by code to use?
    • A. 

      #8

    • B. 

      #6

    • C. 

      #4

  • 8. 
    A motor draws 165 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #2/0, Which minimum size copper wire is permissible by code to use?
    • A. 

      1/0

    • B. 

      2/0

    • C. 

      3/0

  • 9. 
    A motor draws 83 amps at a voltage of 460 with a feeder ft. length of 190. The copper wire (75 degree C) size desired is #3, Which minimum size copper wire is permissible by code to use?
    • A. 

      3

    • B. 

      2

    • C. 

      1

  • 10. 
    For purpose of computing service loads, the voltages not to be used is, 120/220V
    • A. 

      True

    • B. 

      False

  • 11. 
    The unit lighting load that is specified for, occupancy use in the code book constitutes the required lighting load for each square foot (0.093 mz) of floor area.
    • A. 

      True

    • B. 

      False

  • 12. 
    Each floor area of a building, dwelling unit, or other area involved shall be, computed from the interior wall dimensions to determine the total square footage for, service load calculations.
    • A. 

      True

    • B. 

      False

  • 13. 
    The computed floor area of dwelling units, shall include open or enclosed porches.
    • A. 

      True

    • B. 

      False

  • 14. 
    In all occupancies, what is the minimum design load to include for, each general purpose outlets.
    • A. 

      120 volt-amperes

    • B. 

      180 volt-amperes

    • C. 

      1500 volt-amperes

  • 15. 
    Outlets serving switchboards, and switchgear frames in telephone exchanges need not be included, in minimum design load computations.
    • A. 

      True

    • B. 

      False

  • 16. 
    An outlet for a specific appliance not covered in Article 220 shall have the computed ampere rating based on what?
    • A. 

      Appliance rated amperes

    • B. 

      180 volt-amperes for outlet

    • C. 

      2000 watts per appliance

  • 17. 
    What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for a Barber shop that, you can use?
    • A. 

      2

    • B. 

      3

    • C. 

      3 1/2

  • 18. 
    What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for, a Hospital that you can use?
    • A. 

      2

    • B. 

      3

    • C. 

      3 1/2

  • 19. 
    What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for a School that, you can use?
    • A. 

      2

    • B. 

      3

    • C. 

      3 1/2

  • 20. 
    What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for an auditorium that, you can use?
    • A. 

      1

    • B. 

      2

    • C. 

      3

  • 21. 
    What is the minimum Volt-Amperes per Square Foot of, General Lighting Load for a Court room that, you can use?
    • A. 

      2

    • B. 

      3

    • C. 

      3 1/2

  • 22. 
    The volt-amperes of outlets for heavy duty lamp holders shall be computed at a minimum of,
    • A. 

      180

    • B. 

      120

    • C. 

      600

  • 23. 
    When a service voltage exceeds 15,000 volts between conductors enter a building, they shall terminate in a?
    • A. 

      Metal enclosed switchgear compartment

    • B. 

      A transformer vault

    • C. 

      A metal enclosed switchgear compartment or a transformer vault

  • 24. 
    Additional building services, with a supply voltage of 600 volts or less, are permitted when the capacity requirements are in excess of how many amperes?
    • A. 

      2000

    • B. 

      3000

    • C. 

      4000

  • 25. 
    A service supplying a building or other structure can not pass through the interior of another building or other structure.
    • A. 

      True

    • B. 

      False

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