Insulation resistance

[rossage]

Hi. Just doing my part P and am OK with all testing except for insulation resistance. I have the Megger 1552 multi tester, can anyone talk me through the test? Weird I know, this is apparantly the easiest test of them all!

I have three probes, green red and black but am am a bit unsure what to do at the consumer unit to get my reading. Do i test each individual circuit separatley? An idiot proof guidde would be greatly appreciated!

Cheers

 

[luminaire]

Get yourself a copy of "The Part P Doctor". He goes through the whole procedure, including photos, and uses a Megger 1552.

 

[rossage]

thanks. Googled it and found nothing.... ( any idea where to get it?

Cheers

 

[securespark]

Funnily enough, I found it here first hit......

http://www.amazon.co.uk/s/ref=nb_ss...eld-keywords=The+Part+P+Doctor&Go.x=12&Go.y=9

 

[rossage]

Thanks for that. Hmmm. Was looking for a quick fix for tommorow really. Don't really want to spend 27 squid just for that.... Can anyone give me a quick guide with the 1552 megger? Ohhh Pleeeeeeeeeease go on

 

[nozspark]

Hi. Just doing my part P and am OK with all testing except for insulation resistance.

ROFLOL&PMP

Quick Q rossage.. What's your day job??

And how come you can do all tests such as prooving ring continuity and polarity, but can't do an IR test??

Beggars belief

 

[Spark123]

Plenty of good books out there, "Part P Doctor" is written in laymans terms and easy to follow. Have you got guidance note 3 and the on site guide? What do you mean by doing your "Part P"??
Just been reading this over on the IET website: link.
Just goes to show the importance of I&T and also being able to interpret the results.

 

[pdenni]

i agree with spark123 and nozspark, what i dont get is why i was slated for saying you need test and inspect quals on a previous thread, when people were saying they have no quals and still test, as was mentioned how are the results interpreted correctly? and why these "part p courses" let u do these kind of works in limited period of time, with no experiance of how to use the equipment effectively is as nozspark says beggars belief.

 

[nozspark]

pdenni,

As it is, you do not have to have 2391 to be able to certify an installation, or even do a pir. What you do have to be is competent (basically know what, how and why you are doing it) - having 2391 does not in it's self prove competency though!

In this case though if the OP is having trouble IR testing, I would wonder about the accuracy of his claim that he can do all other tests..

 

[gas4you]

I'm a corgi gas engineer with Part P and I totally agree with all of your responses.

As I have said on another thread I think there are going to be a lot of legal cowboys out there signing off electrical work because they have part P.

I only wanted to drop a fused spurs into a kitchen but had to take it. I know my limitations and would never take on electrical work even though I am supposedly now 'qualified' I use it to advise customers to get a qualified electrician in rather than take it on myself if I see a potential fault/problem.

Part P will never make you an electrician, how can it in 3 or 4 days depending on the course you take.

Hats off to you sparks and i fully understand your opinions. I wish I'd never bothered with it now and saved my £1500 I now tend to use sparks where ever I can.

 

[pdenni]

so nozspark i know what u r saying about the competency side of things, someone might be well capable of carrying out all dead and live tests, and recording the results because you have been shown how to do it by the bloke at work but if you cant interpret the results you would surely need some sort of qual to effectively know what u r doing.
I agree that some with 2391 have blagged the exam and got through and are not brilliant but there seems to be a real grey area.
If you werent a sparks and wanted to get someone in would u pick the guy with competency only or the one with cand g quals behind him and experiance?

 

[nozspark]

As in all trades there are lots of people with different levels of competency, and I think that competency here is the main thing as qualifications and even experience do not mean much.

What I would want is someone who can do the job (whatever that may be)correctly and efficently, without ripping me off. Now don't take that the wrong way I do not mind paying a fair wage for a fair day's work, but some people take the P.

Obviously if the work required would need to be certified in any way then I would go for someone who would give me that certification.

And what's the point in testing if you do not know how to interpret the results!!

 

[DESL]

I was in the middle of doing a CU change recently whilst other trades were working on same premises one the 'other trades' asked if he could watch whilst I did the testing as he had just done his part P course.

I felt sorry for the guy as he had no grasp of basic electricity - didn't even understand what resistance was.

 

[ricicle]

had just done his part P course.

no grasp of basic electricity - didn't even understand what resistance was.

I know, I'll become an electrician in 5 days

 

[nozspark]

Do you recon these wonder sparks check for MEB's, RCD's before they carry out any work?