What's an I cert?

[Lilt]

The saga of the electricity supply continues I've finally got EON to admit that the company fuse IS their responsibility, however the person I spoke to said I need a sparky to give me an I cert before they will reconnect.

This is something I've never heard of. Can anyone give me a rough idea of what this involves and the qualifications needed to issue one - do they need to be part p registered for example?

 

[Taylortwocities]

Is this a new, or an existing installation. Sorry, need link to your other posts??

An Installation Certificate is provided when new circuits etc are installed.

If you have an existing installation then you need a Periodic Installation Report (PIR).

Both provide details of the installation, the test results and a statement saying it's OK for use. Usually the documents relate to BS7671. A competent electrician can provide either document but many electricity companies insist that the electrician is registered with one of the "Part P" schemes.

 

[Lilt]

The original thread is here //www.diynot.com/forums/viewtopic.php?t=279541
It's an existing installation but the property was de-energised some time ago. Thanks for the reply. I think it'll be simpler to contact a part p registered electrician, that way there's no question about competence.

 

[Wontdothatagain]

The electric supplier are asking for an PIR (Periodic Inspection Report). This is standard practice when re-energising a disconnected supply.

The report will highlight any defects in the electrical installation.

The person carrying out the report needs to be compertent to do so.

 

[Lilt]

Excellent, thank you. I thought it odd when she said "I cert" because I'd never heard the term before but was so pleased to have spoken to someone who knew what they were talking about that I didn't question it.

Another stupid question I'm sure, but how do you detect defects in an electrical installation without any electricity going through it? Just curious.

 

[FDJ]

Another stupid question I'm sure, but how do you detect defects in an electrical installation without any electricity going through it? Just curious.

By using the appropriate test equipment.

 

[riveralt]

When conducting a test on an installation each circuit is tested, using the appropriate tester, in the following order - all circuits must be dead.

Continuity - of main protective bonding and each circuits circuit protective conductor.
Continuity of ring final circuit conductors.
Insulation resistance between the live conductors and the circuit protective conductors.
Polarity - although this is picked up at the continuity stage.

This is what will be written on the Electrical Inspection Report and should satisfy the DNO providing there are no issues with any of the circuits.

Once DNO energises their part of the circuit - additional lives tests can be done to complete the testing process

 

[Taylortwocities]

If you want to know more than here's a couple of links to info.
Note: I did not write these, nor have I checked them so i bear no responsibility for non-TTC content.

http://claydons.org/public-html/elec/testing.htm
and
http://www.electricalrevision.co.uk...tions/Inspection and Testing - Dead Tests.ppt

Now, here's a dilemma that I point at my learned colleagues on this forum.

To complete the EIC, or PIR the electrician will need to complete the full set of tests in order for hime to provide a certificate (or report). The test sequence is dead tests, then live and functional testing.
How can he carry out the live and functional tests (and sign off the installation) unless the DNO provide an electrical service?

Catch22

 

[riveralt]

Now, here's a dilemma that I point at my learned colleagues on this forum.

To complete the EIC, or PIR the electrician will need to complete the full set of tests in order for hime to provide a certificate (or report). The test sequence is dead tests, then live and functional testing.
How can he carry out the live and functional tests (and sign off the installation) unless the DNO provide an electrical service?

Catch22

No dilemma really, in my experience the DNO accept the dead testing, where readings are within parameters, and energise their part of the circuits.
The inspection can then continue.

The DNO should not energise and handover the installation without the Ze reading meeting their criteria. TNCS = 0.35ohms and TNS = 0.8/0.9ohms or whatever figure they have set.

 

[Wontdothatagain]

Now, here's a dilemma that I point at my learned colleagues on this forum.

To complete the EIC, or PIR the electrician will need to complete the full set of tests in order for hime to provide a certificate (or report). The test sequence is dead tests, then live and functional testing.
How can he carry out the live and functional tests (and sign off the installation) unless the DNO provide an electrical service?

Catch22

No dilemma really, in my experience the DNO accept the dead testing, where readings are within parameters, and energise their part of the circuits.
The inspection can then continue.

The DNO should not energise and handover the installation without the Ze reading meeting their criteria. TNCS = 0.35ohms and TNS = 0.8/0.9ohms or whatever figure they have set.

Exactly what he said ^^^^^^^^

 

[Taylortwocities]

I know. Just wanted to raise the point, as they say.....

 

[Lilt]

Thanks for your help guys. Phoned the bloke who did the electrics in my bathroom and he's doing it next week for me. £120 but I'm going to replace the CU in the near future and from what I've read on here, it's good practice to carry out a PIR before this is done, so I would have had to get one anyway. Fingers crossed now that he'll be happy.

 

[ban-all-sheds]

I'm going to replace the CU in the near future

You are, or an electrician?

 

[Lilt]

You are, or an electrician?

Cause I'm gonna do it - how hard can it be, all I reckon I'll need is some gaffer tape, a few choc blocks and maybe a hammer.

I've already asked my electrician to give me a quote for the work when he comes next week.

 

[janner10]

You are, or an electrician?

Cause I'm gonna do it - how hard can it be, all I reckon I'll need is some gaffer tape, a few choc blocks and maybe a hammer.

I've already asked my electrician to give me a quote for the work when he comes next week.

Homour isnt understood by most on these forums!