1.
Before conducting an insulation resistance test during an initial verification it is essential for the inspector to
2.
Which one of the following documents does not include model forms for certification purposes?
3.
The initial verification of an electrical installation must include
4.
Which of the following gives detailed guidance on the inspection and testing of an electrical installationllowing gives detailed guidance on the inspection and testing of an electrical installation
5.
Which document is most appropriate for general information on constructing a simple electrical installation?
6.
On completion of an initial verification of an additional new circuit, the inspector should provide
7.
The value of external loop impedance Ze has to be available to the person(s) carrying out an initial verification of an installation. This value is
8.
A Minor Electrical Installation Works Certificate does not require a record of
9.
During an initial verification the human senses of smell and touch would most likely detect
10.
Before initial verification of an addition to an existing installation is carried out, the occupier of the premises should
11.
In a new bathroom installation where the only circuit is lighting, the pipework is plastic and the method of fault protection is ADS, there is no need to check for the presence of
12.
A human sense most appropriate during the initial verification would be
13.
Whilst conduction an initial verification of a new circuit it is noticed that an existing circuit is overloaded. The most likely human sense that would have revealed this condition is
14.
Under the requirements of the Electricity at Work Regulations inspectors must be able to
15.
A main protective bonding conductors connects
16.
The test of separation between SELV circuits and circuits operating at 400 V is carried out using an insulation resistance tester set to
17.
When measuring the external earth fault loop impedance of an electrical installation, the earthing conductor must be
18.
Which of the following tests would confirm the separation of SELV circuits from circuits operating at 230 V as required by BS7671?
19.
The most likely method for compensating for the difference between normal operating temperatures and testing temperatures for earth fault loop impedance, is by
20.
A three lead prospective fault current instrument is being used to measure the fault current on an installation forming part of a TN-C-S system. If the neutral and earth leads are both connected to the neutral terminal the measurement being taken is PFC
22.
The non-statutory document that is applicable to the construction and use of test equipment is
23.
A test of prospective fault current should be undertaken at the point of installation of an overcurrent protective device to ensure it is
24.
The measured value of prospective fault current measured at the origin of an electrical installation is 1520 amperes. The minimum rating for the protective device installed at the origin is
25.
The continuity of conductors should be verified by using
26.
When a number of additional circuits are connected to a distribution board the overall insulation resistance will
27.
The BS7671 requirements for supplementary equipotential bonding apply specifically to
28.
The need to consult the client or user before carrying out a test of insulation resistance to an alteration or addition, is to ensure
29.
The certificate issued for an initial verification must be accompanied by a schedule of
30.
Before commencing an insulation resistance test during an initial verification, the supply to the installation under test must be
31.
When carrying out an insulation resistance test, the user of the installation would be warned because of the danger from
32.
Before carrying out a test of insulation resistance it is most important to ensure the test leads meet the requirements of
33.
Guidance on the type and use of electrical test equipment used by electricians is found in
34.
The continuity of conductors should be verified by using
35.
An increase in conductor operating temperature will result in
36.
It is not appropriate to use an insulation resistance tester to measure continuity of conductors because the instrument
37.
A ‘live’ test of earth electrode resistance, for an installation forming part of a TT system is to be carried out using a two lead instrument. The supply connections for the test instrument can be made to the
38.
The third stage in conducting a test of ring final circuit continuity is to
39.
The maximum tabulated value of earth fault loop impedance for a circuit is 1.85Ω. If the resistance of line and cpc for the new circuit is 1.03Ω the maximum acceptable external earth fault loop impedance value is
40.
In order to ensure that the risk of electric shock under fault conditions is significantly reduced, it is important that
41.
Before carrying out an insulation resistance test, the inspector should record
42.
Details of instrument manufacturer and serial number are recorded on
43.
Electrical Installation Certificate for a new installation may be
44.
For a new domestic installation on a TT supply, one item which need not be inspected is
45.
Ze for an installation is 0.8Ω, the line conductor of a final circuit is 1.21Ω, with a cpc resistance of 1.81Ω. The expected earth fault loop impedance is
46.
The earth lead of a test instrument used to check the earth fault loop impedance of an earth electrode will be connected to
47.
The following tests may be carried out on a new installation
48.
The relevant test sequence for a new lighting circuit is
2, 1, 4, 3
2, 4, 1
3, 1, 4, 2
4, 2, 1
None
49.
Linking line and cpc of an isolated radial lighting circuit in the distribution board is the first step to confirm
50.
When testing continuity of main protective bonding conductors, the most likely range is
51.
Entries on a Minor Electrical Installation Works Certificate need not be confirmed by the
