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Question 1 of 21
1. Question
State the documentation to be issued to the client on completion of the electrical installation. q721
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Question 2 of 21
2. Question
State who is responsible for determining the date of the first periodic inspection. q722
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Question 3 of 21
3. Question
State two factors which may need to be considered when determining the date of the first periodic inspection. q723
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Question 4 of 21
4. Question
State one statutory document and one non-statutory document which relate to the inspection and testing of an installation. q724
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Question 5 of 21
5. Question
State two objectives of the initial verification process q725
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Question 6 of 21
6. Question
State four items of essential information relating to the supply which are to be recorded on the certificate q726
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Question 7 of 21
7. Question
State giving reasons, whether the copper cpc incorporated in the distribution cable is suitable as part of the main equipotential bonding to the gas and water services installed to the new building from the public supply. q727
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Question 8 of 21
8. Question
Describe a suitable test to confirm the continuity of the cpc in a distribution cable. q728
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Question 9 of 21
9. Question
Using the information contained in the second table, calculate the expected value for the test described in the previous question. Show all calculations, State why Zs, when measured at the new distribution board, may be different from the calculated value. q729
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Question 10 of 21
10. Question
The continuity of ring final circuits is to be carried out before the installation is energised. Describe with the aid of sketches, the test for Circuit 1, giving the expected values for each stage of the test. Show all calculations. q730
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Question 11 of 21
11. Question
An insulation resistance test is to be carried out on a new installation.
State what precautions need to be taken with regard to connected electrical equipment, in order to fully test the installation. q731
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Question 12 of 21
12. Question
State the factors which will affect the total value at the distribution board for a new installation when measured. q732
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Question 13 of 21
13. Question
State the test voltage to be applied, the minimum acceptable value as given in BS 7671 and any additional requirements from Guidance Note 3. q733
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Question 14 of 21
14. Question
Calculate the expected overall value for the new installation if the test values for each of the individual circuits prior to connection to the distribution board was 200MΩ, show all calculations. q734
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Question 15 of 21
15. Question
An earth fault loop impedance test for Circuit 10, General Lights Left, is to be carried out.
Calculate the expected value that will be obtained, using the information provided q735
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Question 16 of 21
16. Question
Determine whether the value obtained in the previous question is acceptable and show all calculations q736
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Question 17 of 21
17. Question
Describe the procedure for carrying out a direct measurement test. q737
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Question 18 of 21
18. Question
Describe, with the aid of a fully labelled diagram, the earth fault path for Circuit 7. q738
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Question 19 of 21
19. Question
Calculate the prospective earth fault current at the origin of the installation. q739
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Question 20 of 21
20. Question
State, giving reasons, whether the prospective earth fault current at the new distribution board will be higher or lower than that at the origin. q740
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Question 21 of 21
21. Question
State the importance of the prospective fault current in relation to the installed protective devices. q741
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