Earth Bonding Question

Krav

Hi All,

I have earth bonding to my main incoming water and gas pipes in the hallway. Do I need to have supplementry bonding on all copper pipes in the downstairs bathroom, wetroom and upstairs toilet (no bath), or will the main gas and water pipes suffice?

Also, I am a little confiused by the electric regs with regards to Part P, I have a NICEC cert, do I need any additional certificates for a rewire job (something like a Part P, or does the NICEC cover it?). Just worried about not having the correct paperwork should we ever sell.

Many thanks.

Oldsoak

All taps and radiators should have their metal pipes (copper or steel) earth bonded so that they cannot become live. Your elec cert is valid unless you have carried out any further work since it was issued. Part P certification is a minimum requirement cert for installers (ie tilers fitting underfloor heating should not connect to the mains unless part P certified). It's not for your home certification it's for the installer (sorry if that was a bit confusing).

Krav

Thanks for your reply Oldsoak.

Should the bonding in the bathrooms not have been part of the rewrire (17th edition)? I have no earth bonding in the bathrooms, is it worth getting someone in to do this?

keystone

No if the elkectrical work in the bathroom fit was done to the 17th Supplementary Equipotential Bonding is not required as the circuits will be RCD protected.

Cheers

keystone

Oldsoak wrote: »

It's not for your home certification it's for the installer.

Yes it is when they come to sell.

Cheers

Krav

keystone wrote: »

No if the elkectrical work in the bathroom fit was done to the 17th Supplementary Equipotential Bonding is not required as the circuits will be RCD protected.

Cheers

The electrican didn't do any work in the downstairs bathroom as it was re-wired (new spot lights and pull cord switch) a year earlier when it was refurbished. I have two RCDs on the consumer box, I believe the bathroom lights would come under "Upstairs Lights" and another for "Downstairs lights" on each of the RCDs. Would this suffice? The toilet upstairs was re-wired as part of the rewire.

P.S. I have two certs, the NICEC "Domestic Electrical Installation Certificate" and another called titled "Electrical Installation work certificate of compliance" which I found.

keystone

If the house rewire was to the 17th Supp Bonding in the bathroom is still not required irespective of when the work was done.

Cheers

Krav

I can confirm that the house was re-wired to 17th Edition. I assume this also means the combi boiler does not need any earth bonding either.

1984ReturnsForReal_2

Krav wrote: »

I can confirm that the house was re-wired to 17th Edition. I assume this also means the combi boiler does not need any earth bonding either.

Your combi boiler will be earthed internally

Krav

1984ReturnsForReal wrote: »

Your combi boiler will be earthed internally

My neighbour has had the same boiler fitted (Vaillant Ecotech 831) which has all pipes earth bonded. He's wiring is a lot older as he did his rewire when he moved in about 20+ years ago.

keystone

Then it would not have been done to the 17th would it? Thus his pipes must have the bonding in place.

Cheers