Bathroom supplementary bonding

[marcusone]

We all joke but last year I was working in a house that had a new heating system installed. All plumbed in Hep plastic. Eight radiators were all individually bonded back to the MET.

 

[oldtimer]

While you are there if the shower is 7.5kw and wired in 6mm on a 30 amp 3036 (wire fuse) then fill your boots and chuck a 10kw shower in and then we get the job of telling the customer that the circuit needs upgraded

 

[NDG Elecs]

I am a plumber by trade and posted this question on plumbers forum but was told to post it here instead! -

I am planning a a bathroom for a client in an extension but there is no existing pipework to connect onto for the supplementary bonding. Would it be ok to connect it to the earth wires on say the light circuit or ringmain? Thanks!

Am I reading this correctly.....a plumber conscientiously and diligently doing a thorough job !!!

Haha! But good on you for caring, many trades folks dont give a hoot. Concur with RB. Use 4mm and blue BS951 clamps.

 

[Deleted member 9648]

^^^^not planning on staying a forum member I presume^^^^

 

[D Skelton]

Why are you worrying about the bonding, it's not your responsibility it's the sparks

Actually, it is his responsibility. We all have a responsibility to ensure that our work complies with all parts of the building regulations and if the OP did a proper plumbing qualification at college he would have been taught about both main and supp bonding and how it's his head on the chopping block if HIS work doesn't comply.

When we chase in walls or drill holes in joists, if we were to ask the builder or the chippy what to do they certainly wouldn't be replying "that's our responsibility so don't worry about it".

and as the bonding is not required if there are RCD's/RCBO's on the circuits I cannot see why your getting yourself involved with this...

If the extraneous conductive parts in that bathroom are not effectively connected to earth (less than 0.05ohms) then RCD or no RCD they will need supplementary bonding.

I must say (and I mean no offence), IMHO I think you (and others admittedly) have been slightly harsh to the OP considering how many plumbers do you know that give any sort of a to$$ when it comes to the effect their work has on ours? I don't know any!! So I think the OP deserves a lot of credit for actually caring about making sure the job is done properly and for showing interest in our side of things when it comes to bonding.

Like I said, most plumbers I know will sling a new bathroom in, Polyplumb tees everywhere and then when I come along and test and my response is "that nice shiny new bath needs to come out and the stud wall hiding the shower pipes needs to come down because you haven't bonded" their response is often something along the lines of "well why didn't you tell me?!?!?". Well my answer to that is "because you should know because it's YOUR responsibility to make sure YOUR work complies with the building regs!!!"

I hate plumbers as a rule so I think it's fresh to hear from one that actually gives a cr@p

 

[Outspoken]

Mr Skelton, many thanks for your reply, and perhaps I should have worded my flippant response better than I did. I take your comments on board and agree, however the point I made about the plumber getting involved was that whilst i am sure he is a very professional and qualified/experienced plumber, he will not necessarily have the same breadth of knowledge and experience in the electrical installation field, as such this is best left to the spark involved. By all means ask the question if he is paying for the Job and ensure the sparky is suitably qualified, but there has to be an obvious limit to his involvement, afterall as sparks we do not do the job of plumbers..(officially at least)

 

[Guest55]

this is going to cost another grand to fix".

you were out by a magnitude of 10.
;-)

 

[ackbarthestar]

Just to add a little more to this thread.

be reminded of the note at the bottom of 701.415.2 which points us to 415.2.2.

So at what point do you decide that supplementary bonding can be omitted ?

and how will you establish that 701.415.2 can be implemented without consideration to 415.2.2 ?


:cry_smile:

 

[telectrix]

Just to add a little more to this thread.

be reminded of the note at the bottom of 701.415.2 which points us to 415.2.2.

So at what point do you decide that supplementary bonding can be omitted ?

and how will you establish that 701.415.2 can be implemented without consideration to 415.2.2 ?


:cry_smile:

i would open the regs. to confirm, but it's sunday afternoon. i've just finished fitting new rear brakes on the van, and the only thing i'm opening now is beer.

 

[trev]

Remember to bond the radiator too and also the metal hinges on the door

What about the metal door handle? You forgot about that you flippin cowboy

 

[telectrix]

trev, you could also bond your zimmer frame with a wander lead.

 

[trev]

Comment voluntarily withdrawn as it could have inadvertently caused offence.

 

[ackbarthestar]

i would open the regs. to confirm, but it's sunday afternoon. i've just finished fitting new rear brakes on the van, and the only thing i'm opening now is beer.

:26: :smilewinkgrin:

If you lot spent more time reading your regs book, you will notice that it is a delight of temporal revelations. Lol

So then you would know why you had a low reading Ohmmeter and an Insulation resistance Tester.

Do Plumbers usually have those instruments in their possession ?

 

[chilliwilly]

^^^^not planning on staying a forum member I presume^^^^

No I'm trying to get my account removed, I don't want to be associated with the forum any longer

 

[Guest55]

^^^ i've got a feeling your wish will be granted very shortly C.W.

and are you just not capable of walking away if you're not having fun ?