Building Installation 1

1. The Electricity at Work Regulations is

2. Which one of the following is non-statutory document?

3. Which of the following is a potential implication of non-compliance with a statutory requirement?

4. In order to most effectively determine the types of materials and quantities required to complete an electrical installation an estimator will require

5. Which of the following components is commonly displayed on drawing using the symbol shown?

6. Which one of the following components is commonly displayed on drawings using the symbol shown?

7. Which one of the following is the correct drawing scale where a luminaire, 1500 mm in length, measures 30mm on a drawing?

8. Which one of the following would be the actual length of a wall where a scale drawing shows it as 20 cm in length, to a scale of 1:100?

9. Which one of the following types of circuit would a 24 V fire alarm circuit be classed as?

10. Which one of the following is the maximum length of span, between two buildings, where the wiring system is thermoplastic sheathed cables without any intermediate support?

11. Which one of the following wiring systems must be used to protect cables concealed in a wall; to a depth of 22mm, in a domestic dwelling where the circuit has no additional protection by an RCD?

12. PVC cable should be shielded from exposure to direct sunlight because

13. The most suitable equipment for checking whether a length of trunking is horizontal is to use a

14. Copper links bolted across the joints of steel trunking are used to provide

15. Which one of the following is correction factor for an ambient air temperature of 25^oC where a cable has a 90^oC thermosetting insulation?

16. Which one of the following is the rating factor for grouping where three circuits are touching on horizontal cable tray?

17. What would be the voltage drop for two-core 2.5mm² 70^oC thermoplastic insulated and sheathed flat cable, run in conduit to a length of 22 m, when supplying a single-phase circuit having a load current of 18 A?

18. Which one of the following is the correct formula use to determine I_t when determining the cross sectional are of live conductors?

19. Which one of the following devices provides both overload protection and residual current earth fault protection?

20. Which one of the following devices would not operate if there was a short circuit?

21. What is the minimum conduit size suitable for a 4 m run 3 bends containing the following single-core thermoplastic insulated cable

2 x 1.5 mm²

2 x 2.5 mm²

1 x 4.0 mm²

22. Which one of the following is the trunking factor for determining the capacity for a 75 mm x 38 mm trunking?

23. Which one of the following is the trunking factor capacity for a 100 mm x 50 mm trunking?

24. The earth return path within the supplier’s cable of a TN-C-S system is the

25. Which one of the following earthing arrangements is shown in the diagram?

26. What is represented by Z_e in the following formula?

 Z_s = Z_e + (R₁ + R₂)

27. What is represented by R₁ in the following formula?

 Z_s = Z_e + (R₁ + R₂)

28. Which one of the following is most likely to be used as a cpc?

29. Which of the following defines the cable connection to the main earthing terminal of a copper water pipe feeding a domestic dwelling at its point of entry into the dwelling?

30. Which one of the following defines a metal conduit system which is fixed on a wall where it drops to a light switch?

31. Which one of the following defines the term ‘exposed conductive part’?

32. Which one of the following is an extraneous part?

33. Which one of the following methods of generating electricity uses liquid water to drive a turbine?

34. Which one of the following is needed in order to produce alternating current electricity by means of photovoltaic generation?

35. Which one of the following is a transmission voltage?

36. Which one of the following is a voltage commonly distributed to commercial offices with a maximum demand no greater than 200 A?

37. Which one of the following is used to suspend power cables, above the ground, for transmission systems?

38. Which one of the following technologies uses PV arrays?

39. Which one of the following is the main fuel for Biomass systems?

40. Which one of the following is the most significant disadvantage of a micro-hydro system to enable its effective operation?