2391 LO 5 extra questions
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Question 1 of 13
1. Question
A 2.5mm/1.5mm (Twin/CPC) cable is used for a ring final circuit. What factor would you apply to the r1 value to calculate the expected value of r2?
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Question 2 of 13
2. Question
When completing the R1 + R2 Continuity test on a radial circuit, a link is placed between Line and CPC at the board. Where and what would you test between to obtain your highest R1 + R2 value?
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Question 3 of 13
3. Question
What Voltage do you set your meter to for Insulation Resistance, if you are testing circuits with potentially sensitive equipment connected?
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Question 4 of 13
4. Question
What position should all switches be in when testing Insulation Resistance?
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Question 5 of 13
5. Question
What is the minimum acceptable value for an Insulation Resistance test, on an ELV circuit set to 250V D.C?
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Question 6 of 13
6. Question
When testing polarity on a lighting circuit with Edison screw lamp holders, what are we specifically testing for?
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Question 7 of 13
7. Question
How is Polarity checked on a ring final circuit?
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Question 8 of 13
8. Question
The Breaking capacity of protective devices must be over the PFC value.
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Question 9 of 13
9. Question
What is the maximum Ze value for a TN-C-S system?
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Question 10 of 13
10. Question
What is the maximum Earth Fault Loop Impedance Value after the rule of thumb has been applied, for a 32A BSEN60898 type B?
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Question 11 of 13
11. Question
What is the maximum Earth Fault Loop Impedance Value after the rule of thumb has been applied, for a 6A BSEN60898 type C?
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Question 12 of 13
12. Question
What is the maximum Earth Fault Loop Impedance Value after the rule of thumb has been applied, for a 20A BSEN60898 type B?
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Question 13 of 13
13. Question
Which of the following is not a functional test?
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