Trunking and Mechanical Connectors Quiz

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Questions and Answers

What is the main purpose of conducting insulation resistance tests on a new electrical installation before connecting it to the mains?

  • To check the polarity and earth continuity of the circuits
  • To ensure the installation is free from faults and complies with electrical rules (correct)
  • To measure the earth resistance of the installation
  • To identify the exact cause of any potential failures or breakdowns

Which of the following is NOT a common test performed on a new electrical installation before connection to the mains?

  • Insulation resistance test between conductors
  • Testing of phase-neutral continuity (correct)
  • Insulation resistance test between installation and earth
  • Earth resistance test

What is the main advantage of using trunking over conduit for running a large number of cables?

  • Trunking is more cost-effective than using individual conduits
  • Trunking is more flexible and can be easily routed around obstacles
  • Trunking provides better protection for the cables from physical damage
  • Trunking has a removable lid which allows the cables to be laid in rather than drawn in (correct)

What is the primary purpose of using mechanical connectors when terminating cables in an electrical installation?

<p>To provide a secure and reliable connection between the cable and the terminal (D)</p> Signup and view all the answers

Which of the following is NOT a common accessory used with trunking systems?

<p>Junction boxes (B)</p> Signup and view all the answers

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