supplementary bonding

cobra · 24 Jul 2006

I am installing an electric shower- can I use 10mm earth cable for supplementary bonding instead of 4mm as I bought the bigger cable by mistake. Is it safe?

thankyou for any advice

_____________________________
lynda, moderator

moved as posted in wrong forum

the_jinj · 24 Jul 2006

Perfectly safe! Can you terminate it everywhere you need to though?

cobra · 24 Jul 2006

the_jinj said:
Perfectly safe! Can you terminate it everywhere you need to though?

as far as I am aware you can only terminate at the consumer unit being an electric shower. Thanks for your prompt reply

Spark123 · 24 Jul 2006

You do not need to run the supplementary bonding to the CU (unless the CU is in the bathroom

), supplementary bonding is only local to the location.

Adam_151 · 24 Jul 2006

cobra said:
the_jinj said:

Perfectly safe! Can you terminate it everywhere you need to though?

Click to expand...

as far as I am aware you can only terminate at the consumer unit being an electric shower. Thanks for your prompt reply

Woah, hold it right there...

Where exactly are you connecting this supp. bonding?

cobra · 24 Jul 2006

Adam_151 said:
cobra said:

the_jinj said:

Perfectly safe! Can you terminate it everywhere you need to though?

Click to expand...

as far as I am aware you can only terminate at the consumer unit being an electric shower. Thanks for your prompt reply

Click to expand...

Woah, hold it right there...

Where exactly are you connecting this supp. bonding?

I was connecting from shower pipe and going to leave the supp bonding hanging over c u so that an electrician could make connection to c u and certify work. thanks cobra

Adam_151 · 24 Jul 2006

The sup bonding doesn't go back to the CU, it connects to the earths of all circuits supplying equipment within the bathroom zones to all metal work that can introduce a potential into the zones (metal water pipes mainly) and holds them at the same potenital so you can't get a shock between them

Pensdown · 24 Jul 2006

Adam_151 said:
cobra said:

the_jinj said:

Perfectly safe! Can you terminate it everywhere you need to though?

Click to expand...

as far as I am aware you can only terminate at the consumer unit being an electric shower. Thanks for your prompt reply

Click to expand...

Woah, hold it right there...

Where exactly are you connecting this supp. bonding?

Well spotted

Spark123 · 25 Jul 2006

You'll have to do a lot more grovelling than that Pensdown

Pensdown · 25 Jul 2006

I just hope it brings a smile to his face as intended, if not, I will grovel, but not to much

ban-all-sheds · 25 Jul 2006

cobra said:
the_jinj said:

Perfectly safe! Can you terminate it everywhere you need to though?

Click to expand...

as far as I am aware you can only terminate at the consumer unit being an electric shower. Thanks for your prompt reply

Rules on bathrooms, including supplementary equipotential bonding.

Definition of "extraneous-conductive-part".

Earthing v bonding.
. .
. .
. .

early_911 · 23 Oct 2007

Any chance someone could update the links above or give me a clear and easy to understand answer.

I'm having an absolute nightmare trying to understand the earthing/bonding requirements for my bathroom. Don't think I've come across two people who say the same thing (i.e. conflicting view abound).

I have a plastic bath, a toilet, a non electric shower, 2 towel rads, 1 proper rad.

On the electrics front I have a 2 wall lights (switched from outside the room - with one having it's own pull cord switch as well) and a pull cord electric fan (that's happens to be on it's own circuit back to the consumer unit).

The bathroom is shared by two bedrooms so it has two doors and therefore two light switches.

Any advice on what needs to be connected to what, and with what greatly appreciated.

Regards
Phil

JohnD · 23 Oct 2007

if you look at the first few entries within each forum (e.g. "Electrics UK") you will usually find pointers to common questions like this one.

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

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supplementary bonding

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