New CU but no water bonding...

[jaydub]

Someone has asked for an upgrade to their consumer unit but they have no water bonding. I explained this and said it needs to be done but it's quite a job and they don't want it done, just the CU upgraded?

What's the crack with that?

Can you crack on and put it down as a departure from bs7671?

 

[polo1]

Is the incoming water supply definitely an extraneous conductive part?
I won't do a cu changeover where bonding is required & the customer won't agree to it being done.
PS you can't note it as a departure.

 

[Des 56]

Before any addition or alteration is carried out blah blah

 

[Pete999]

Someone has asked for an upgrade to their consumer unit but they have no water bonding. I explained this and said it needs to be done but it's quite a job and they don't want it done, just the CU upgraded?

What's the crack with that?

Can you crack on and put it down as a departure from bs7671?

Or walk away, safety should have no cost if they wont pay walk away.

 

[Octopus]

So the IET come out with regs, make no attempt to publicise the regs and leaves the poor sparks to educate the public.

This is not acceptable.

So, our responsibility is to make sites safer and, as such, updating a cu to one with. MCB's and RCD's is making the site safer.

Tin hat on

Just saying..

Ps. None of the CPS make any attempt, that I am aware of to educate Joe public either.

My advice to the op is to provide a written quote with the cu and bonding update ... Then see what happens.....

 

[Midwest]

Even if the service is plastic, internal water metal pipes might have to be bonded.

 

[jaydub]

Thanks everyone, just a situation I have not yet come across.

Can anyone give me an example of when you might use the departures section? Just out of interest really. Again, never used it or seen it used!

 

[Ian1981]

Even if the service is plastic, internal water metal pipes might have to be bonded.

If internal water pipes with plastic incoming service can't introduce a potential (earth potential that is) and can be considered non extraneous parts then I don't see why they need bonding

 

[Midwest]

If internal water pipes can't introduce a potential (earth potential that is) and can be considered non extraneous parts then I don't see why they need bonding

Reg 528.3.4.

 

[Deleted member 9648]

The departures section would only be used where a departure from Bs7671 could be justified,
so in the real world virtually never unless the signatory is prepared to take to consequences if the known departure goes ---- up.

 

[telectrix]

sometimes you canfind a cold water pipe in an easier location to bond. in that case, it could be noted as a departure, as long as a R2 test confirmed that said bond had an acceptable resistance to the pipe where you'd have liked to bond ( i.e. close to the point of entry ).i done that with the gas here. as the main gas pipe passess next to the CU. the entry point is 10yards away in the attached garage.

 

[Ian1981]

Reg 528.3.4.

Confused what's that got to do with protective bonding ?

 

[telectrix]

Confused what's that got to do with protective bonding ?

bugger all. afaik, can't be arsed to look it up, but ain't it the proximity of services reg.?

 

[Ian1981]

bugger all. afaik, can't be arsed to look it up, but ain't it the proximity of services reg.?

Correct

 

[Wilko]

I think departure example would be design engineer had specified some bit of kit that was not BS XYZ but had certified that it was equivalent or better than the required BS.

 

[westward10]

I estimate 45 posts on this.

 

[Midwest]

Reg 528.3.4

ii) Fault protection shall be afforded in accordance with the requirements of section 411.

If I'm completely off target, please feel free to tell me, I'm here to learn. As far as I'm aware, if you can't guarantee you electrical services, are not in close proximity with other services, section 411 applies?

 

[Ian1981]

Reg 528.3.4

ii) Fault protection shall be afforded in accordance with the requirements of section 411.

If I'm completely off target, please feel free to tell me, I'm here to learn. As far as I'm aware, if you can't guarantee you electrical services, are not in close proximity with other services, section 411 applies?

Yes but that's nothing to do with main protective bonding of extraneous parts :mtongue: although it is part of ADS
Chapter 54 deals with protective bonding

 

[telectrix]

regs. book stays in desk drawer after beer o'clock.

 

[westward10]

I don't have a set of Regs.