City And Guilds 2382 (17th Edition) Example Questions.

60 Questions | Total Attempts: 126

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The City & Guilds 2382 exam comprises of 60 random multiple choice questions. Commonly known as the 17th Edition it is a requirement for any serious electrician. The duration of the exam is 120 minutes giving an average of 2 minutes per question. The following mock exam generates a random selection of 60 questions from a database of over 500 ! Enjoy and GOOD LUCK


Questions and Answers
  • 1. 
    Requirements are included in BS 7671 for electrical installations of
    • A. 

      Lift installations

    • B. 

      Mobile offshore electrical systems

    • C. 

      Distributor's networks

    • D. 

      Locations containing a bath or shower

  • 2. 
    Which of the following is excluded from the scope of BS 7671?
    • A. 

      Cabins containing sauna heaters

    • B. 

      Fountains

    • C. 

      Highway power supplies

    • D. 

      Lightning protection

  • 3. 
    Which of the following is not included in BS 7671?
    • A. 

      Demolition site installations

    • B. 

      Electric fences

    • C. 

      Medical locations

    • D. 

      Motor caravans

  • 4. 
    Which of the following documents is non-statutory?
    • A. 

      Electricity Safety, Quality and Continuity Regulations

    • B. 

      Electricity at Work Regulations

    • C. 

      The Building Regulations

    • D. 

      Requirements for Electrical Installations

  • 5. 
    Protective equipotential bonding is achieved by
    • A. 

      Preventing current from passing through the body

    • B. 

      Ensuring adequate continuity between extraneous conductive parts

    • C. 

      Automatic disconnection of supply in the event of a fault

    • D. 

      Separation of equipment from the supply using a safety isolating transformer

  • 6. 
     The type of earthing arrangements requiring a consumer’s earth electrode to be installed is where 
    • A. 

      No earth facility is supplied by the distributor

    • B. 

      The supply is from a low voltage generator

    • C. 

      Earthing is via the distributor’s cable armour

    • D. 

      The electrical system is TN-C

  • 7. 
    Low-voltage is defined in BS 7671 as having a value exceeding
    • A. 

      24V ac

    • B. 

      48V ac

    • C. 

      50V ac

    • D. 

      120V ac

  • 8. 
    Tables showing the classification of external influences when considering environmental conditions during the design of an installation can be found in BS 7671
    • A. 

      Chapter 32

    • B. 

      Chapter 53

    • C. 

      Appendix 4

    • D. 

      Appendix 5

  • 9. 
    An assessment must be made of harmful effects on other electrical systems when installing
    • A. 

      Large electric motors

    • B. 

      Fire alarm systems

    • C. 

      Emergency lighting circuits

    • D. 

      Reduced low voltage supplies

  • 10. 
    For a 32A ring final circuit in similar premises to a dwelling, the minimum size of thermoplastic insulated copper live conductors allowed is
    • A. 

      1.0mm2

    • B. 

      1.5mm2

    • C. 

      2.5mm2

    • D. 

      4.0mm2

  • 11. 
    In a domestic dwelling a 32A ring final circuit incorporating BS 1363 socket-outlets historically serves a floor area up to
    • A. 

      75m2

    • B. 

      100m2

    • C. 

      50m2

    • D. 

      200m2

  • 12. 
    The following final circuits are to be installed using thermoplastic insulated multicore non-armoured cables 3 x 6A lighting                      1 x 20A UPS supply                             3 x 32A ring                           1 x 40A cooker   If the cables are enclosed in a non-metalic trunking where entering the distribution board, how many live conductors would be enclosed?
    • A. 

      9

    • B. 

      16

    • C. 

      22

    • D. 

      32

  • 13. 
    The required current carrying capacity of a three-phase circuit conductor Iz  is 26A.  From the correct table, the minimum size of three single-core thermoplastic covered, heavy duty MICC cables, installed flat on a perforated cable tray and spaced by two cable diameters is
    • A. 

      1.0mm2

    • B. 

      1.5mm2

    • C. 

      2.5mm2

    • D. 

      4.0mm2

  • 14. 
    Which of the following is not a characteristic of the supply?
    • A. 

      Nominal voltage

    • B. 

      frequency

    • C. 

      Earth loop impedance Ze

    • D. 

      Power factor

  • 15. 
    The requirements for mobile or transportable units are applicable to the following types of unit
    • A. 

      Health screening services

    • B. 

      Pleasure craft

    • C. 

      Mobile machinery to BS EN 60204-1

    • D. 

      Traction equipment of electric vehicles

  • 16. 
    Basic protection by means of obstacles is intended to prevent 
    • A. 

      Ordinary persons from operating equipment

    • B. 

      Intentional contact with exposed parts

    • C. 

      Intentional bodily approach to a live part

    • D. 

      Unintentional bodily approach to a live part

  • 17. 
    Which of the following is a method of fault protection?
    • A. 

      Electrical separation

    • B. 

      Barriers or enclosures

    • C. 

      Insulation of live parts

    • D. 

      Placing out of reach

  • 18. 
     The value of the external earth loop impedance Ze  can be obtained by measurement at
    • A. 

      The supply point and subtracting the value of internal loop impedance (R1 + R2)

    • B. 

      The furthest socket-outlet from the supply

    • C. 

      The origin of supply

    • D. 

      both the supply and at the furthest socket-outlet, and subtracting one result from the other

  • 19. 
    In a TN system, final circuits not exceeding 32A supplying fixed equipment are subject to a maximum disconnection time of
    • A. 

      0.4s

    • B. 

      0.8s

    • C. 

      4.0s

    • D. 

      5.0s

  • 20. 
    The temperature limit for metalic equipment which is intended to be touched but not hand-held is
    • A. 

      30 degrees Celsius

    • B. 

      55 degrees Celsius

    • C. 

      65 degrees Celsius

    • D. 

      70 degrees Celsius

  • 21. 
    Overload current is defined as an overcurrent
    • A. 

      Due to low insulation resistance

    • B. 

      In a circuit which is electrically sound

    • C. 

      Due to a fault of negligible impedance

    • D. 

      In a line conductor in contact with earth

  • 22. 
    The prospective fault current at the origin of a single-phase installation is the greater of the prospective
    • A. 

      Maximum demand and diversity value

    • B. 

      Short circuit and overload current

    • C. 

      Design current and distributor’s main fuse

    • D. 

      Short circuit and earth fault currents

  • 23. 
    To meet the requirements of BS 7671, all overcurrent devices without upstream backup protection must
    • A. 

      Be rated lower than the design current

    • B. 

      Meet the requirements of BS 7846

    • C. 

      Be able to withstand the prospective fault current

    • D. 

      Not operate due to a line to earth fault

  • 24. 
    Which of the following devices can not be used for emergency switching?
    • A. 

      A push-button controlling an all-pole contactor

    • B. 

      A manually operated switch

    • C. 

      A circuit-breaker

    • D. 

      A luminaire support coupler

  • 25. 
    Which of the following arrangements of a firefighter’s switch controlling a discharge lighting installation would comply with BS 7671?
    • A. 

      Switch with off position at the bottom and mounted at 2.75m from the ground

    • B. 

      Switch with off position at the top and mounted at 3.75m from the ground

    • C. 

      Switch with off position at the bottom and mounted at 3.75m from the ground

    • D. 

      Switch with off position at the top and mounted at 2.75m from the ground

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