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#137273 - 06/17/03 09:54 AM Testing house wiring
C-H Offline

Member

Registered: 09/17/02
Posts: 1508
Loc: Stockholm, Sweden
Let's say I want to test the wiring in a house. The wiring is new but undocumented.

Which tools and meters do I need?

Which tests should I carry out?

How should these tests be carried out?

Which values should I get?

I know Trumpy outlined the tests required in NZ. But I haven't seen a 'hands on' guide to the testing procedure. The Swedish regs are as always unclear.

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#137274 - 06/18/03 01:14 AM Re: Testing house wiring
pauluk Offline
Member

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
IEE Regs. in the U.K. set out a whole range of tests for correct earthing, polarity, ring continuity, loop impedance, etc.

This guide gives a pretty good idea of what's involved: http://www.tlc-direct.co.uk/Book/8.1.1.htm

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#137275 - 06/18/03 02:25 PM Re: Testing house wiring
PaulCornwall Offline
Member

Registered: 06/02/03
Posts: 112
Loc: England
have you got a week for us to explain!!!!

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#137276 - 06/19/03 01:23 AM Re: Testing house wiring
David UK Offline
Member

Registered: 10/03/02
Posts: 134
Loc: Inverness, Scotland
Thanks for posting that link Paul, it's saved me a lot of typing.

C-H,
Obviously these are for standard UK installations, so there will certainly be some variations in Sweden.
Do Swedish wiring regs not have Guidance Notes on Inspection & Testing, suggesting appropriate testing methods?

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#137277 - 06/19/03 06:29 AM Re: Testing house wiring
C-H Offline

Member

Registered: 09/17/02
Posts: 1508
Loc: Stockholm, Sweden
 Quote:

Obviously these are for standard UK installations, so there will certainly be some variations in Sweden.


Maybe. Some things like testing the integrity of a ring are not needed.

 Quote:

Do Swedish wiring regs not have Guidance Notes on Inspection & Testing, suggesting appropriate testing methods?


Errr... That is probably in the guide that you can buy in addition to the regulations.

For the insultation testing: Can you use 1000V tester like this one even if only a 500V test is required?

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#137278 - 06/20/03 01:43 AM Re: Testing house wiring
pauluk Offline
Member

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
Sure. The Regs. just specify a minimum test voltage of 500V DC for all 240V single-phase and 415V 3-phase systems.

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#137279 - 06/20/03 07:34 PM Re: Testing house wiring
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
C-H,
I'd just like to make a point.
The Regulations have never been written with the intention of them being a training guide in the practical guide in the why's and where's of Electrical work(including testing).
This side of Electrical work, is learnt during an apprenticeship or similar type of training system.
Don't you need to be Qualified in Sweden to test new Electrical work?(and certify it, where this is required?), before it is connected to a supply.
Please do not misconstrue this posting as a personal attack on yourself, as this is not my intention, at all.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

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#137280 - 06/22/03 08:38 AM Re: Testing house wiring
C-H Offline

Member

Registered: 09/17/02
Posts: 1508
Loc: Stockholm, Sweden
 Quote:

I'd just like to make a point.
The Regulations have never been written with the intention of them being a training guide in the practical guide in the why's and where's of Electrical work(including testing).


You're right. This is why I couldn't simply look it up...

 Quote:

Don't you need to be Qualified in Sweden to test new Electrical work?(and certify it, where this is required?), before it is connected to a supply.


Yes, you do. (Well, legally you or your boss has to be qualified.)

The questions were more or less hypotetical, as I don't have a new installation which needs testing.

(My parents just bought a house, and I intend to call an electrician to have it inspected. I was curious what tests he is supposed to carry out. The thing is that the wiring in this case is rather sloppy which makes me distrust the workmanship of the local electricans. Some boxes are so full of wires that it is impossible to the cover on. I touched one wirenut yesterday and it came off instantly.)



[This message has been edited by C-H (edited 06-22-2003).]

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#137281 - 06/27/03 02:31 PM Re: Testing house wiring
pauluk Offline
Member

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
The tests outlined in that link would be equally applicable to either a new installation or to an electrician inspecting and testing an existing system.

NOte particularly the requirement that certain tests be carried out before others in order to maintain proper safety.

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#137282 - 06/27/03 07:07 PM Re: Testing house wiring
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
Paul,
That's a really good link, mate!.
Must have a decent read of it sometime.
C-H,
I would also be very suspicious of any electricians, whose standard of workmanship is like that you have just described.
I'd keep an eye on the testing process, if I were you.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

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