Understand design and installation practices and procedures TIMED MOCK EXAM (Use of the On-Site Guide is required for some questions)

Mock Exam covering; Understand how to prepare for the installation of wiring systems, applications of wiring systems, practices and procedures, electrical systems and circuits. 20 questions in 30 MINUTES from a large question bank.

29:46
Answer ALL questions. Look for any feedback given if you get an answer incorrect. Keep choosing an answer until you get it correct. CORRECT or INCORRECT answers are indicated at the TOP of the page. A score is given at the TOP of the page when the exercise has been completed. © K.Brown 2026

  1. identify the appropriate document that details the specific dimensions of a specified type of lighting fitting
    1.   layout drawing
    2.   manufacturers data
    3.   circuit diagram
    4.   installation specifications
  2. identify the preferred method to protect soft furnishings from dust during electrical installation work such as drilling into the building fabric
    1.   use dustsheets
    2.   removal of all soft furnishings prior to starting work
    3.   use a vacuum cleaner when drilling work has ceased
    4.   use of water spray to keep dust levels down
  3. identify the appropriate enclosure/fixing to be used with un-sheathed, pvc insulated single-core conductors
    1.   steel cable tray
    2.   pvc capping
    3.   stainless steel cable basket
    4.   pvc trunking
  4. identify the appropriate installation method for a SWA multicore cable installation
    1.   on steel cable tray
    2.   in steel conduit
    3.   in stainless steel cable basket
    4.   in pvc trunking
  5. how can long runs of pvc conduit be installed to reduce the prospect of distorting and buckling due to large changes in ambient temperature.
    1.   pvc conduit must not be installed in these environments
    2.   regular through-boxes are used throughout the run
    3.   greater distances between saddles
    4.   use expansion couplers
  6. identify the cable system that is 'hygroscopic'
    1.   MIMS
    2.   HOFR
    3.   PILC
    4.   CAT
  7. identify the tool used to determine if a conduit run is vertical
    1.   spirit level
    2.   gps
    3.   chalk line
    4.   plumb line
  8. identify the device that operates using only the 'thermal' effect.
    1.   BSEN 61009
    2.   BSEN 60898
    3.   RCD
    4.   BS88-2
  9. when applying DIVERSITY to a water heater in a small shop, identify the percentage of total current demand allowed if the heater is thermostatically controlled
    1.   75%
    2.   90%
    3.   not allowed
    4.   66%
  10. identify the rated short-circuit capacity of a BS88-6 device at 415v
    1.   31.5kA
    2.   80kA
    3.   33kA
    4.   16.5kA
  11. identify the maximum 'measured' Zs value allowed for a type B 16A circuit breaker to BSEN60898
    1.   1.1 ohms
    2.   2.19 ohms
    3.   3.5 ohms
    4.   1.84 ohms
  12. identify the maximum 'measured' Zs value allowed for a type D 40A circuit breaker to BSEN60898, with a 5 second disconnection time
    1.   3.5 ohms
    2.   0.44 ohms
    3.   1.09 ohms
    4.   0.88 ohms
  13. determine the minimum conduit size to accommodate 2x 2.5 mmsq and 7x 10 mmsq, stranded copper conductors in a 2 metre straight conduit run
    1.   38mm conduit
    2.   25mm conduit
    3.   20mm conduit
    4.   32mm conduit
  14. a 100mm x 50mm trunking already accommodates 16x 25 mmsq PVC (BS6004) insulated, stranded copper conductors. How many more 10 mmsq conductors of the same type could be safely accommodated
    1.   30
    2.   25
    3.   33
    4.   21
  15. identify the part of the Buildings regulations (2010) that covers 'energy efficient lighting'
    1.   part M
    2.   part P
    3.   part A
    4.   part L
  16. identify the part of the Buildings regulations (2010) that covers 'the heights of socket outlets and switches'
    1.   part A
    2.   part P
    3.   part L
    4.   part M
  17. identify the system of earthing that uses a PEN conductor
    1.   IT
    2.   TN-C-S
    3.   TN-S
    4.   TN-C
  18. identify the Thermal Insulation Derating factor for insulation that is 400mm in length
    1.   0.4
    2.   0.5
    3.   0.51
    4.   0.41
  19. identify the statutory regulation from this list
    1.   EaW
    2.   EPA
    3.   BS7671
    4.   Hasaw
  20. identify the device that operates using the 'magnetic' effect during a short-circuit fault.
    1.   BS88-2
    2.   BS7671
    3.   BSEN 60898
    4.   BSEN 60269-2