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Question 1 of 103
1. Question
Why is periodic inspection and testing undertaken?(QID:11349)
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Question 2 of 103
2. Question
What is the most suitable document to be issued by an inspector following the installation of an additional outdoor socket-outlet supplied from an existing ring-final circuit?(QID:11351)
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Question 3 of 103
3. Question
How regularly must an Approved Voltage Indicator, used to check safe isolation, be checked for operation?(QID:11354)
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Question 4 of 103
4. Question
What should be undertaken if a Main Protective Bonding Conductor cannot be seen throughout its length?(QID:11355)
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Question 5 of 103
5. Question
What would be checked by visual inspection to verify that Additional Protection is suitably provided by an RCD?(QID:11356)
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Question 6 of 103
6. Question
When is it acceptable to insert a cross against any item in Section 2 of a schedule of inspections for new works?(QID:11357)
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Question 7 of 103
7. Question
What classification code would be used when discovering a severely damaged socket-outlet during a periodic inspection?(QID:11361)
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Question 8 of 103
8. Question
Why does continuity testing precede insulation resistance when conducting initial verification?(QID:11369)
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Question 9 of 103
9. Question
Why is a set test sequence not required when testing existing installations having reliable test records?(QID:11370)
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Question 10 of 103
10. Question
What test voltage is used when testing the separation of circuits between the supply and load conductors at the point where a SELV transformer would be connected?(QID:11372)
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Question 11 of 103
11. Question
What document must be issued following the installation of a new cooker circuit to an existing installation(QID:11423)
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Question 12 of 103
12. Question
What circumstance would require an Electrical Installation Condition Report to be issued(QID:11424)
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Question 13 of 103
13. Question
The measured R1+R2 value for a radial cooker circuit, with a 6 mm2 line conductor and a 2.5 mm2 cpc, is 0.29 Ω. What is the length of this circuit?(QID:11425)
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Question 14 of 103
14. Question
What is the purpose of an initial verification?(QID:11300)
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Question 15 of 103
15. Question
Which non-statutory document contains specific detail relating to the methods of testing during an initial verification?(QID:11301)
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Question 16 of 103
16. Question
What information must an inspector have, which relates to diagrams, charts or tables?(QID:11302)
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Question 17 of 103
17. Question
How is the risk of the inspector receiving an electric shock minimised whilst working on an isolated circuit?(QID:11304)
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Question 18 of 103
18. Question
What is the level of risk if a Main Protective Bonding conductor, to a metallic water pipe, is disconnected from the MET when the supply is not isolated?(QID:11305)
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Question 19 of 103
19. Question
Why is the inspection carried out before any testing?(QID:11306)
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Question 20 of 103
20. Question
What would be inspected when the basic protection by barriers and enclosures is being verified on a three-phase distribution board?(QID:11307)
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Question 21 of 103
21. Question
What would be verified by inspection where additional protection is provided on a circuit concealed in walls at a depth less than 50 mm?(QID:11308)
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Question 22 of 103
22. Question
What would be verified using only the human sense of sight?(QID:11309)
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Question 23 of 103
23. Question
What is the minimum permitted level of IP protection for a metal trunking housing non-sheathed cable?(QID:11311)
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Question 24 of 103
24. Question
What would an inspector be looking for when verifying that a new machine in a workshop has adequate undervoltage protection?(QID:11312)
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Question 25 of 103
25. Question
What must happen if a test instrument is found to be inaccurate?(QID:11313)
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Question 26 of 103
26. Question
What must be done with a low resistance ohmmeter to ensure accurate results are obtained each time it is used?(QID:11314)
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Question 27 of 103
27. Question
What does GS38 require?(QID:11315)
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Question 28 of 103
28. Question
Why should a continuity test be carried out first on a circuit?(QID:11317)
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Question 29 of 103
29. Question
What would be the maximum expected value of Ze on an installation forming part of a TNCS system?(QID:11319)
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Question 30 of 103
30. Question
Which factor directly affects voltage drop?(QID:11322)
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Question 31 of 103
31. Question
What would be a common reason for a Local Authority requiring a periodic inspection and test to be carried out on a private building?(QID:11323)
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Question 32 of 103
32. Question
Which statutory document relates to the periodic inspection and testing process?(QID:11324)
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Question 33 of 103
33. Question
What factor could have an impact on the limitations agreed with a client?(QID:11326)
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Question 34 of 103
34. Question
What is a major responsibility of an inspector, based on the overall condition of an installation, following a periodic inspection?(QID:11327)
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Question 35 of 103
35. Question
What does the Electricity at Work Regulations state, with regard to, working on or near live parts?(QID:11328)
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Question 36 of 103
36. Question
A large installation is being inspected by four persons and the supply has been isolated. How should the means of isolation be secured?(QID:11329)
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Question 37 of 103
37. Question
What is the minimum level of IP protection, for Basic Protection, when inspecting the accessible horizontal top surface of a distribution board?(QID:11330)
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Question 38 of 103
38. Question
One item on an Inspection Schedule requires the segregation of Band I and Band II cables. What is a typical example of a Band I cable?(QID:11331)
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Question 39 of 103
39. Question
What is an example of a defect which is classified C1?(QID:11332)
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Question 40 of 103
40. Question
Which defect would be detected by the sense of hearing?(QID:11333)
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Question 41 of 103
41. Question
What is the maximum residual current setting for an RCD providing fault protection only?(QID:11334)
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Question 42 of 103
42. Question
What does the second number of an IP code relate to?(QID:11335)
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Question 43 of 103
43. Question
What is required following the issue of an F1 code?(QID:11336)
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Question 44 of 103
44. Question
When testing a 230 V circuit using 500 V which display would represent a suitable insulation resistance value when the instrument is set to MΩ?(QID:11338)
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Question 45 of 103
45. Question
What circumstances would remove the need for a ring-final continuity test during periodic testing?(QID:11339)
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Question 46 of 103
46. Question
What would most likely influence instrument accuracy, leading to more frequent checks being needed?(QID:11340)
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Question 47 of 103
47. Question
What factor would most likely lead to tests being carried out in a sequence different to initial verification?(QID:11341)
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Question 48 of 103
48. Question
What is the maximum disconnection time for an RCD to BS EN 61008 when tested at 1 x lΔN?(QID:11343)
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Question 49 of 103
49. Question
What is the maximum permitted value of measured earth fault loop impedance for a 20 A radial power final-circuit, supplied by a TN-S system, protected by a BS 88-3 system C fuse?(QID:11344)
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Question 50 of 103
50. Question
What is the maximum permissible value of voltage drop for a 230 V power circuit?(QID:11345)
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Question 51 of 103
51. Question
When should the integral test button on an RCD be operated during a periodic test?(QID:11346)
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Question 52 of 103
52. Question
How regularly should the test button on an RCD be operated by the user of an installation?(QID:11347)
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Question 53 of 103
53. Question
What is the purpose of an initial verification?(QID:11348)
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Question 54 of 103
54. Question
What is the responsibility of the duty-holder in the inspection and testing procedure?(QID:11353)
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Question 55 of 103
55. Question
How would a non-compliance be recorded on an inspection schedule during a periodic inspection?(QID:11358)
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Question 56 of 103
56. Question
What would be verified using the sense of touch during an initial verification?(QID:11359)
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Question 57 of 103
57. Question
What code would be given where access to a room is a limitation and the inspector suspects corrosion to a bonding clamp?(QID:11362)
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Question 58 of 103
58. Question
What equipment IP rating is suitable for splashes of water from all direction?(QID:11363)
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Question 59 of 103
59. Question
Where a barrier or enclosure has a rating of IP2X, what diameter of tool should not be able to penetrate that barrier/enclosure?(QID:11364)
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Question 60 of 103
60. Question
What is the minimum permitted IP protection for the top surface of an accessible surface distribution board?(QID:11365)
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Question 61 of 103
61. Question
What must be fitted to GS38 compliant test leads?(QID:11366)
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Question 62 of 103
62. Question
What is a suitable method of testing the function of an insulation resistance tester?(QID:11368)
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Question 63 of 103
63. Question
What would be the approximate disconnection time for a 32 A Type B circuit breaker to BS EN 60898 if an earth fault loop impedance of 2.87 Ω was recorded?(QID:11373)
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Question 64 of 103
64. Question
A 1.5 mm2 cpc is connected to a socket-outlet and has a measured resistance of 0.8 Ω. What would be the resistance of R2 for this circuit if another 1.5 mm2 conductor, of the same length, was run and connected in parallel?(QID:11376)
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Question 65 of 103
65. Question
What is the main purpose of an Initial Verification?(QID:11377)
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Question 66 of 103
66. Question
What situation requires the issuing of a Minor Electrical Installation Works Certificate?(QID:11378)
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Question 67 of 103
67. Question
Which statutory document contains specific information relevant to Initial Verification?(QID:11379)
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Question 68 of 103
68. Question
What is the minimum voltage which requires the test leads and probes to comply with GS38?(QID:11380)
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Question 69 of 103
69. Question
How many voltage measurements are required to confirm that a three-phase four-wire installation is safely isolated?(QID:11381)
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Question 70 of 103
70. Question
What precaution is required before carrying out a test of external earth fault loop impedance (Ze) so as to avoid danger to users of an installation?(QID:11382)
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Question 71 of 103
71. Question
Why does BS 7671 require inspection to be carried out before testing?(QID:11383)
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Question 72 of 103
72. Question
Which situation will not require a label stating ‘Safety Electrical Connection – Do Not remove’?(QID:11384)
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Question 73 of 103
73. Question
What must be checked when inspecting a consumer unit for compliance with Basic Protection requirements?(QID:11385)
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Question 74 of 103
74. Question
Which two senses are used when inspecting the terminations at a newly installed motor?(QID:11386)
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Question 75 of 103
75. Question
What action must be taken when a loose connection is found to a pipe during the inspection of a main protective bonding conductor termination?(QID:11387)
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Question 76 of 103
76. Question
What best describes the protection offered by IPXXB?(QID:11388)
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Question 77 of 103
77. Question
What is the minimum IP rating for electrical equipment installed in Zone 2 of a bathroom?(QID:11389)
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Question 78 of 103
78. Question
What would be the correct procedure to confirm that the existing electrical installation in a dwelling is suitable for the additional wiring of an extension(QID:11401)
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Question 79 of 103
79. Question
What is the purpose of a periodic inspection and test relating to the safety of the building(QID:11402)
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Question 80 of 103
80. Question
What is the minimum level of IP protection for the highlighted cover of a consumer unit?(QID:11403)
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Question 81 of 103
81. Question
What is the minimum level of IP protection for the accessible top surface of a consumer unit?(QID:11404)
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Question 82 of 103
82. Question
Which publication gives detailed information for carrying out testing of electrical installations?(QID:11405)
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Question 83 of 103
83. Question
What would be agreed with the client and recorded as a limitation for a periodic inspection and test(QID:11406)
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Question 84 of 103
84. Question
Which statutory document includes the requirements for working on live conductors?(QID:11407)
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Question 85 of 103
85. Question
What action should the inspector take, both before and after testing, to confirm isolation of the supply(QID:11408)
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Question 86 of 103
86. Question
Which classification code indicates that there is a non-compliance which is identified as ‘improvement required’?(QID:11409)
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Question 87 of 103
87. Question
Which human senses would be best used to determine excess arcing at a contactor during a walk around survey(QID:11410)
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Question 88 of 103
88. Question
A 10 mm2 main protective bonding conductor is 37.5 m in length. What is the expected measured resistance when testing the conductor?(QID:11411)
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Question 89 of 103
89. Question
What is the most likely cause of the measured value being much higher than the calculated value(QID:11412)
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Question 90 of 103
90. Question
What is confirmed by an earth fault loop impedance test on a radial power circuit(QID:11414)
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Question 91 of 103
91. Question
What is the maximum disconnection time for a 16 A , 230VAC final circuit on a TT installation?(QID:11415)
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Question 92 of 103
92. Question
A radial circuit is installed using-single core cables in PVC conduit. The installation is 4 years old and there have been no alterations or additions to the radial circuit. Why would it be unnecessary to carry out a continuity of cpc for this circuit at periodic inspection and test?(QID:11417)
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Question 93 of 103
93. Question
Insulation resistance testing has been carried out on a six-way lighting distribution board and the individual circuit results are:
Lights 1: 200 Ω,
Lights 2: 50 Ω,
Lights 3: 50 Ω,
Lights 4: 169 Ω,
Lights 5: 198 Ω,
Spare.
What is the value of insulation resistance between Live and Earth for the DB with all the lighting circuits connected?(QID:11418)CorrectIncorrect -
Question 94 of 103
94. Question
What is the most appropriate classification code to be recorded if the insulation resistance for a circuit is measured at 0.90 MΩ between live conductors and Earth(QID:11419)
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Question 95 of 103
95. Question
Which will be confirmed if the technical requirements of Parts 3 to 8 of BS 7671 are followed? (QID:11428)
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Question 96 of 103
96. Question
The calibration of an Earth Fault Loop Impedance tester reveals that the instrument is outside of specification. Regular accuracy checks on the instrument have not been carried out for six months. What immediate action must be taken by the contractor?(QID:11390)
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Question 97 of 103
97. Question
Why does BS 7671 give a defined sequence of tests when carrying out Initial Verification?(QID:11392)
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Question 98 of 103
98. Question
Which test method is used to verify that extraneous conductive parts of an installation are effectively connected to the MET?(QID:11393)
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Question 99 of 103
99. Question
Where on a lighting circuit would a test of continuity of protective conductors be carried out?(QID:11395)
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Question 100 of 103
100. Question
What would cause the value of R2 to be higher than R1 and Rn when carrying out step 1 of a continuity of ring-final circuit test?(QID:11396)
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Question 101 of 103
101. Question
What is the test voltage for an insulation resistance test carried out on a 230 V circuit containing socket-outlets with surge protection devices which cannot be removed?(QID:11397)
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Question 102 of 103
102. Question
During the construction of an installation, insulation resistance tests have been carried out between live conductors and earth on four individual circuits and the L to E results are shown below. What is the expected value of insulation resistance L to E when the whole installation is tested?
1 – 120 MΩ, 2 – 120 MΩ, 3 – 130 MΩ, 4 – 150 MΩ(QID:11398)CorrectIncorrect -
Question 103 of 103
103. Question
A test is to be carried out to determine the external earth fault loop impedance of an installation forming part of a TN-S system. What is the maximum declared by the Distribution Network Operator for a TN-S supply(QID:11420)
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