N2 Electrical Trade Theory: Module 9 – Earthing
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Question 1 of 16
1. Question
Q1 – What is an earth electrode?
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Question 2 of 16
2. Question
Q2 – What is the purpose of earthing?
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Question 3 of 16
3. Question
Q3 – What do you understand by the term touch voltage?
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Question 4 of 16
4. Question
Q4 – What do you understand by the term earthed
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Question 5 of 16
5. Question
Q5 – Bonding is very important in any electrical installation. Explain what the aim of bonding is.
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Question 6 of 16
6. Question
Q6 – Explain what you understand by leakage current.
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Question 7 of 16
7. Question
Q7 – What does SANS 10142 stipulate with regard to earthing of the neutral conductor on the consumers side of an installation?
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Question 8 of 16
8. Question
Q8 – Discuss the implications of an appliance not being earthed.
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Question 9 of 16
9. Question
Q9 – What does SANS 10142 stipulate with regard to metallic frames and metallic enclosures of electrical equipment
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Question 10 of 16
10. Question
Q10 – Explain the term floating earth
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Question 11 of 16
11. Question
Q11 – Explain what an earth-continuity conductor is.
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Question 12 of 16
12. Question
Q12 – Briefly explain how the wire armouring of a wire armoured cable must be terminated on equipment.
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Question 13 of 16
13. Question
Q13 – What do you understand by the term system earthing
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Question 14 of 16
14. Question
Q14 – What does SANS 10142 stipulate with regard to the use of the wire armouring of a cable as an earth-continuity conductor?
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Question 15 of 16
15. Question
Q15 – What is the function of an earth tag washer?
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Question 16 of 16
16. Question
Q16 – Why are earth continuity conductors erected above overhead fines
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