Welcome to your 2365 624 Inspection & testing
1.
Before you begin testing an installation, the designer has indicated that the method of protection against fault contact is ADS. What does this mean?
2.
A BS EN 61009 30mA 32A RCBO is protecting a ring final circuit. When the circuit is tested with an RCD tester at 1 x rating of the RCD, how fast should it disconnect?
3.
If during an initial verification on an installation a continuity of cpc test gives erroneous results you should
4.
What checks can be carried out to ensure an insulation resistance tester and its leads are working correctly
5.
In a medical location, the result of the resistance of the earth electrode and the rated residual operating current should not exceed
6.
A Residual Current device should be tested with
7.
The resistance of the r2 on a standard domestic 32A ring final circuit wired in twin and CPC cable will result in readings
8.
Before carrying out an insulation test which of the following is recommended doing
9.
Which of the following are required to be entered on page 2 of an EIC in the Nature of the supply parameters
10.
If 2 cables are connected together in series and measured the overall resistance will
11.
An Electrical Installation Certificate must indicate which responsibility for an installation?
12.
If the temperature of a conductor increases, the resistance?
13.
Which of the following instruments would be used to measure the resistance of an earth electrode?
14.
During the initial verification of several machines within a large and busy factory unit, you run out of time to test the remaining ten before the night shift begins. What should be your course of action?
15.
Several test instruments are used on an installation, which of the following would be most likely to give a reading of 2.5kA?
16.
Two resistors of value 1Ω and 2Ω are connected in parallel across 50v supply. What is the total current drawn in the circuit?
17.
Applying the rule of thumb method, the value of prospective short circuit current for a three phase supply should be
18.
Continuity of Ring Final Conductors should be performed on initial verification using
19.
The person resonsible for issuing he Certificate after completion of an Initial Verification
20.
An insulation resistance test on a small installation that contains no distribution circuits can be
21.
A test instrument has a calibration date that has passed, what should be your course of action?
22.
The following tests are classed as live tests, what is the correct sequence according to GN3? 1. Operation of RCDs 2. Earth fault loop impedance 3. Other functional checks 4. Prospective Fault Current.
23.
An insulation resistance test should record results in
24.
The practice of placing insulation tape over a switched circuit breaker during the safe isolation process contravenes which regulation?
25.
An earth fault loop impedance tester should only allow test current to flow for
26.
Before energising an installation prior to performing live tests you should
27.
Once a single circuit has been safely isolated, the key should
28.
Specific regulations within the Electricity at Work Regulations state that they are absolute. What does that mean?
29.
Which of the following would NOT be acceptable for performing an insulation resistance test?
30.
The maximum value of earth electrode resistance for a TT installation protected by a 500mA RCD is given by GN3 as
31.
The Electricity at Work Regulations 1989 states that working live should in the first instance should
32.
If a copper conductor was doubled in length, the resistance would
33.
One test that will commonly identify short circuits within an electrical installation is the
34.
The test designed to determine the correct connection of all the protective conductors within installation is known as the
35.
The main risk of not carrying out the full safe isolation procedure when working on live circuits is
