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Inspection and Testing 2391/5357 Mock 1
Use this to test your knowledge of 5357 unit 112 and 2391-51
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1. In order for a person to inspect and test an installation. They must first be a…… *
1 point
2. The term duty holder in electricity at work regulations refers to the person: *
1 point
3. Which of the following identifies the correct process for safe isolation of a circuit protected by a circuit breaker? *
1 point
4. Work is to be carried out on an installation which includes a solar PV supply system. Which of the following must be carried out before isolating the DNO’s supply to the installation? *
1 point
5. A test of earth fault loop impedance is to be carried out in an area which is accessible to the public. Which of the following in not a suitable method of protecting the public from the risk of electric shock? *
1 point
6. Work is to be carried out at the distribution board supplying a multi storey office building. Which of the following must be placed out of service to ensure the safety of the users, before the safe isolation of the distribution board is carried out? *
1 point
7. Who is most at risk when an inspector fails to isolate a lighting circuit before removing a luminaire cover to carry out an inspection? *
1 point
8. Which publication specifically identifies the need for electrical installations to be safe for use and maintained in that condition? *
1 point
9. Which publication specifically identifies the requirements for test leads and probes to be used when carrying out tests at 230V a.c? *
1 point
10. Which test would be used to confirm that exposed conductive parts are connected to the main earthing terminal *
1 point
11. What test is used to confirm the correct connection of a three phase socket outlet? *
1 point
12. Which test is required to confirm the correct operation of a 30-mA RCBO installed to provide additional protection? *
1 point
13. Which of the following is the correct voltage for carrying out an insulation resistance test on a 400v three phase circuit terminated at an isolator? *
1 point
14. A continuity test is to be carried out. The instrument to be used has been calibrated, suitable and is undamaged. What is the remaining check that needs to be done to confirm the instruments suitability? *
1 point
15. Which of the following is the minimum short circuit test current for a low ohm resistance meter? *
1 point
16. Test instruments should be calibrated in accordance with the manufacturer’s instructions to ensure accurate test results. In addition to calibration, which of the following should be carried out and recorded? *
1 point
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