1. What is the basic safety standard for electrical test instruments?
2. What is a recognised method of ensuring ongoing accuracy of test instruments?
3. What is the measuring range of a Low-resistance ohmmeter?
4. An Insulation Resistance Tester should be capable of developing what test voltages?
5. How does an Earth fault loop impedance tester calculate Prospective fault current?
6. What is the most accurate test method for verifying earth electrode resistance?
7. To minimise danger during the RCD test what is the maximum time the test current should be applied for?
8. Phase rotation instruments can indicate correct rotation by what means?
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.
