Grey area with Certificaters

[leejcooper]

Hi can you help please.
Still a bit unsure with which certificate to raise if at all. Have looked at a job where the sockets in a garage need tidying up. There is a mixture of plastic boxes with metal sockets and metal boxes with plastic sockets so looking at changing all to metal clad so just need to confirm whether i need to raise a MWC as it is like for like no rewring etc.

Thanks

 

[johnboy6083]

I would issue a MWC to cover yourself mate. If the sockets have no CPC due to damage that is not visble, and you then whack a new front on, then your the last person to touch that circuit, and you could be held responsible.

 

[leejcooper]

Thanks for the reply, assume would just carry out tests at the Cu in the garage as it's fed by its own RCD and MCB from the house?

 

[telectrix]

if you're going to test, as you should, then it's no big deal to complete a MWC. as said previously, it shows that you've tested your work, and covers your arse in case some DIY muppet messes with it in the future.

 

[nickblake]

like the guys have said MWC you should test , reason being if you just go in and do the work then how do you know that the install didnt have an underlying fault any works even changing a face plate should be tested as you never know if a cable has popped out when you refit the face plate and they do , tests to do Zs across the incommer make sure the supply is ok , r1r2 insulation Zs rcd , if theres a ring the end to end continuity tets

 

[leejcooper]

Thanks for all the replies. As i asked earlier assume i don't touch the house CU as could open a big can of worms as house has old mem board no RCD's etc

 

[nickblake]

make sure you install an RCD in the garage mate always remember you have to cover your self and do the job properly issue a cert then your covered

 

[leejcooper]

There is a RCD and MCB in the house housed in it's own CU which is specifically for the garage so i assume i would test at the other CU in the garage as i won't be touching the house circuits? Just need to be clear in my mind.

 

[telectrix]

to get your Ze and pfc for the installation, you would have to test at the origin in the house ( db1) . the EFLI at the garage CU would be classed as Zdb2.

 

[tony mc]

There is a RCD and MCB in the house housed in it's own CU which is specifically for the garage so i assume i would test at the other CU in the garage as i won't be touching the house circuits? Just need to be clear in my mind.

If the RCD for the garage is in the house then you will need access to that.

I take it the house RCD MCB feed another CU in the garage !

If so does the garage CU have a main switch or another RCD !

 

[leejcooper]

Yes the house RCD and MCB feed another CU in the garage fitted with wired fuses

Has a main switch so no problem with RCD discrimination