brucelee
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Hi to all,
I am taking a 2391 course at minute written exam in june. I have a few questions iI am struggling with if anyone would be kind enough to share there knowledge i would appreciate it
1) when testing selv whats the insulation resistance value before further investigation cant find i gn3 tutor first said 5.0Mohm then 2.0Mohm so confused
2) when asked about first four tests for a new lighting circuit is it
. continuity of protective conductors inc main and supplementary bonding
. Insulation resistance
. polarity live test
.earth fault loop impedence
or would you include dead test polarity by continuity methods
3) when circuits dont meet max Zs two methods of overcoming this would you install rcd and supplementary bonding how would i answer this question or would you say shorten cable length ,increase csa
4) when carrying out continuity of ring final circuit conductors whats the reason you would select this instrument is it because it is capable of measuring the difference e.g.between a 1mm cable and a 10 mm
5) when asked to explain a test on a radial socket outlet circuit do i have to include testing Line-Neutral as well as Line-cpc so as to prove polarity?
6) three outcomes to be recorded on a schedule of test results after conducting ring test
i have more but i leave it at that for now
Think i am getting things mixed up because of all revising any help would be extremely helpful cheers
I am taking a 2391 course at minute written exam in june. I have a few questions iI am struggling with if anyone would be kind enough to share there knowledge i would appreciate it
1) when testing selv whats the insulation resistance value before further investigation cant find i gn3 tutor first said 5.0Mohm then 2.0Mohm so confused
2) when asked about first four tests for a new lighting circuit is it
. continuity of protective conductors inc main and supplementary bonding
. Insulation resistance
. polarity live test
.earth fault loop impedence
or would you include dead test polarity by continuity methods
3) when circuits dont meet max Zs two methods of overcoming this would you install rcd and supplementary bonding how would i answer this question or would you say shorten cable length ,increase csa
4) when carrying out continuity of ring final circuit conductors whats the reason you would select this instrument is it because it is capable of measuring the difference e.g.between a 1mm cable and a 10 mm
5) when asked to explain a test on a radial socket outlet circuit do i have to include testing Line-Neutral as well as Line-cpc so as to prove polarity?
6) three outcomes to be recorded on a schedule of test results after conducting ring test
i have more but i leave it at that for now
Think i am getting things mixed up because of all revising any help would be extremely helpful cheers
