Expected r1 r2 value when circuit 16.5m long

[smthdeedog48]

Hi Guys stuck: A ring final circuit wired in 2.5/1.5 Resis: per m 7.41 and 12.1 what is the expected value of (r2+R2) the circuit is 16.5m long

 

[Andy78]

Hi buddy did your math didn't get the answer I know the answer got off the answer sheet 0.08 so how did they get 0.08?

All the answers and formulas are in this thread and your college notes and GN3 and the OSG.

 

[smthdeedog48]

Well guys thanks for the help ! Exam on Tuesday certificate of competence by Napit open book guidance note 3, Onsite Guide , BS7671 regs. Anyone took this test if so any tips or reviews of those 3 books I should be focussing on? Cheers equilent to the 2391

 

[Simonslimline]

Well guys thanks for the help ! Exam on Tuesday certificate of competence by Napit open book guidance note 3, Onsite Guide , BS7671 regs. Anyone took this test if so any tips or reviews of those 3 books I should be focussing on? Cheers equivalent to the 2391

The 2391 is no longer. It's now the 2394/2395.

I very much doubt that the Napit version of this is anywhere near the equivalent to be honest.

 

[trev]

Cheers equilent to the 2391

Sorry mate but it isn't.

 

[smthdeedog48]

So you saying Napit is ripping off they are letting join the scheme if I past this exam!

 

[trev]

Mate, the scams just want your cash and the more of it they can get the happier they are.
Why do you think they're called scams?

 

[smthdeedog48]

I've past my 2392 does that count for anything

 

[spark 68]

I thought the 2392 was just single phase ? besides it is only level 2 anyway.

 

[martinxxxxxx]

Not a lot compared with the 2391, put it this way I past the 2392 in an afternoon. It took 3 months of hard study and application to pass the 2391. I literally slept with GN3 for 90 nights and read it for 90 days. I didn't need to come on a forum to ask what was on page 36, it was faded from the book to my chest where I fell asleep with the page open. Can you really say that the napit test will be the equivalent of this?

 

[martinxxxxxx]

I wrote all the questions down from my 2391, do you want to try one?

 

[123]

TBF 2391 isn't/wasn't that hard either

 

[Leesparkykent]

TBF 2391 isn't/wasn't that hard either

That must be why it had an average of about a 60% failure rate.

 

[123]

That must be why it had an average of about a 60% failure rate.

Doesn't mean a lot, that was down to the entrants not being ready for the exam. Forget the non electricians taking part, but many sat the 2391 to get JIB Appproved status and a pay rise, despite day in day out only doing the likes of containment etc, never coming near to a piece of test equipment

 

[Simonslimline]

I wrote all the questions down from my 2391, do you want to try one?

Fire away...

 

[Silly Sausage]

Fire away...

I've got loads of them scanned somewhere on my computer.
I'll try and find them if you really want.