Welcome to your 2365 624 Inspection & testing
1.
If 3 conductors equal in length and with a resistance of 0.25Ω each are connected in series what is the total resistance?
2.
The easiest method of confirming polarity on a standard lighting circuit is
3.
The maximum value of earth electrode resistance for a TT installation protected by a 300mA RCD is given by GN3 as
4.
Which documentation would you not use for a new circuit or alteration of an existing circuit
5.
An insulation resistance test should record results in
6.
When performing an initial insulation resistance test on a central heating circuit, you should
7.
Which of the following does the Electrical Safety Council recommend as the best device for proving a circuit has been safely isolated
8.
The Zs reading taken on a motor circuit wired in steel conduit maybe lower than the Ze+(R1+R2) calculation due to
9.
When a non domestic installation is protected by an RCD, there shall be a fixed notice stating that
10.
A Zs reading is to be entered on a minor works certificate, what is the correct instrument used to determine this reading?
11.
The purpose of the integral test button of a residual current device is to check
12.
A new installation is to be inspected and tested by yourself. What information should you have available before you start?
13.
According to BS7671 18th Edition Wiring Regulations, insulation resistance values should be investigated below what value?
14.
Why should we always check that the neutral conductor is dead when performing the safe isolation procedure on a lighting circuit?
15.
If during an initial verification on an installation a continuity of cpc test gives erroneous results you should
16.
The correct scale for recording continuity of Ring Final Conductors is
17.
Before energising an installation prior to performing live tests you should
18.
Test leads according to GS38 should be
19.
The image represents which type of earthing system?
20.
A Zs reading is to be entered on a minor works certificate, what is the correct instrument used to determine this reading?
21.
GN3 recommends that a low resistance ohmmeter should have a range of
22.
An insulation resistance test conducted on a radial circuit feeding a single socket outlet reveals a reading of 0.00MΩ?
23.
What checks can be carried out to ensure an insulation resistance tester and its leads are working correctly
24.
When are GS38 leads required?
25.
An insulation resistance test performed on a standard final circuit should be set to measure in
26.
When completing an EIC on a TT system which box should be ticked in the means of earthing section
27.
Test probes to GS38 should amongst other considerations
28.
A reference method indicates
29.
An RCD test should indicate a reading in
30.
Test instruments should ideally be calibrated
31.
BS7671 has a separate part designated solely to testing and inspection. The legal status of this document is that it is a
32.
While working on a circuit, a colleague receives an electric shock. What action should you take?
33.
When performing an insulation resistance test on a 2 way lighting circuit you should?
34.
When performing an earth electrode test, the most reliable results are when the distance between the earth electrode and the current spike should be
35.
Prior to performing an insulation resistance test you should
By Alan Rogers