1. The Electrical Installation Certificate must be accompanied by what other documents?
2. What is the 3rd test in the sequence of testing and why are the tests arranged in that specific order?
3. In the Continuity of Protective Conductors test, what do R1 and R2 signify?
4. On what type of conductor can only Test Method 2 be carried out?
5. How do you calculate the maximum R1 + R2 value for a ring final circuit?
6. What is the Insulation Resistance test designed to verify?
7. If an Insulation Resistance test is to be carried out on a circuit containing a Surge Protective Device which cannot be disconnected, what are you permitted to do and what is the minimum acceptable value of Insulation Resistance?
8. What is the maximum permissable a.c. voltage for a SELV, PELV or FELV circuit?
9. What is the degree of protection required on the readily accessible horizontal top surface of a barrier or enclosure used to provide basic protection and what does this mean in practice?
10. What instrument is used to carry out the Polarity test?
11. Why should the Earth Electrode test be carried out when the ground is dry?
12. How many readings are taken during the Earth Electrode test and how do you establish the resistance of the earth electrode under test from these readings?
13. Why is it important to carry out a live polarity test on an installation prior to carrying out any live tests?
14. Where is the Earth fault Loop Impedance test carried out on a circuit?
15. What is the purpose of the Earth Fault Loop Impedance test?
16. What is the maximum permitted operating time for a 30mA RCD installed for additional protection when tested at 150mA?
17. What is the purpose of the Prospective Fault Current test?
18. Where should the Phase Sequence test be carried out?
19. What is the purpose of Functional testing?
20. What is a typical method of evaluating voltage drop and what is the permissable percentage of voltage drop for a lighting circuit connected to a public low voltage supply?
The answers to the questions above are mainly contained in Guidance Note 3 although some cross reference to BS 7671 or the On Site Guide may be necessary.
