Fitting a DB without updating the main bonding.. Bad crack or safer than before?

[bigbaddave]

So was there any bonding in place or not?

Give me a chance bud... Friday is early finish and pub.... lol

 

[kingeri]

Give me a chance bud... Friday is early finish and pub.... lol

Sorry!

 

[bigbaddave]

Sorry!

Its ok bud.. Id like to say reception is poor in the boozer buts thats just what i tell her indoors

 

[Deleted member 9648]

As is stands no main bond at all.. Well not to the origin anyhow. There is a rad on the other side of the DB to which I have been able to attach 10mm bond to and at boiler have connected together all the service pipes to which as the install is all copper then there is continuity..

Its a TNS with ZE @0.43

You gotta be kiddin' me?:earmuffs:


Edit....clarification of the above....:wink_smile:....I think a token effort is possibly worse than no effort at all.As the occupier has managed to survive god knows how many years without main bonding ,unless it's to be done right better to not bother at all!!

 

[bigbaddave]

You gotta be kiddin' me?:earmuffs:

No im not a plumber and no i didnt fit it.. Whats the beef with that like?

 

[bigbaddave]

You gotta be kiddin' me?:earmuffs:


Edit....clarification of the above....:wink_smile:....I think a token effort is possibly worse than no effort at all.As the occupier has managed to survive god knows how many years without main bonding ,unless it's to be done right better to not bother at all!!

I fail to see what you mean.. Yes of fair enough it not right and there is no way id charge a customer for the same work however..

A) Its by far safter than before
b) Allthough bonding not in correct places still connected to MET..

Please explain bud?

 

[Deleted member 9648]

Not having a go mate....just if another spark comes in at a later date and sees the only main bond on a rad? I see where you are coming from though.

Same principle applies to additional sockets,I confess to having installed extra sockets in old ladies bedrooms without RCD/bonding. Because it's been like that for decades without a problem and one extra socket not likely to supply anything outside changes nothing ....and few old ladies want to spend forty quid on a socket and then another 300 providing RCD's and bonding....and I flatly refuse to subscribe to the lunacy of an RCD FCU for one socket/buried cable in a bedroom when nothing else in the entire property is RCD'd!

 

[specs]

This thread will probably cause outrage but here goes.. Changes a DB a year ago from my 89 year old gran, She is proud of here house and spent a load on it recently doing it up..

Well I say loads... The electrics aint been touched in aged and well to be fair needed a test..

Giving she lives a while away I am ashamed I dont visit very often.. Well she called as her lights had fused after trying to poke around in the fuseboard trying to change a 3036 she gave in and called an emergency electrician who charged her £120 for out of hours call out but did not refuse as they say that the house needed a rewire..

So i take the time off go up and see her, IR test and then ZE, rejuice and ZS however the board if on its last legs and seen better days.. After a chat I agree to fit a new RCD board but she is stuborn about running cables to install bonds due to having to lift freshly laid wooden flooring.. She would rather leave whats there there instead of lifting flooring..

So i crack on fit board...

Call me whatever you want but I know for a fact at 89 year old the system is by far safer to my gran now then it was..

Would I do it again.. Depends on the circumstances.............

I understand where you are coming from, you know, and so do we all that have elderly relatives the upset that major work can cause. you did what you could to make it safe within the perimeters that your Gran could in your opinion cope or agree with. Although I could not possibly agree publicly, I do understand. Now you just need to make a point of visiting on a regular basis and upgrade as and when the opportunity arises. Good luck on that one mate.

 

[44ALLAN]

I understand where you are coming from, you know, and so do we all that have elderly relatives the upset that major work can cause. you did what you could to make it safe within the perimeters that your Gran could in your opinion cope or agree with. Although I could not possibly agree publicly, I do understand. Now you just need to make a point of visiting on a regular basis and upgrade as and when the opportunity arises. Good luck on that one mate.

"b) Allthough bonding not in correct places still connected to MET.."

Yeah mate until plumber gets in or DIY neighbour then that 'bond' on the rad means diddly squat with plastic fittings and pipes all over the place.

Main bonding goes where it should......... on extraneous conductive parts........gas/water/oil etc not on a flippin radiator fgs.......no short cuts whether its for granny/auntie or not IMO.
But hey........if your comfortable with it being safer than it was then good.

 

[Marvo]

As is stands no main bond at all.. Well not to the origin anyhow. There is a rad on the other side of the DB to which I have been able to attach 10mm bond to and at boiler have connected together all the service pipes to which as the install is all copper then there is continuity..

Its a TNS with ZE @0.43

If it's TNS with a Ze of <0.5, there's a solid 10mm bond from the MET to the pipework at the radiator, all the plumbing is copper plus there's crossbonding at the boiler and you've upgraded to RCD (and I assume you've tested all circuits with the CU change) then I wouldn't be too worried. Sounds to me like the installation is far safer than you found it.

 

[SPARTYKUS]

^^^ aye to Marvo

 

[bigbaddave]

Thank you.. Saves taking nightol tonight

 

[Knobhead]

And I got shouted at when I proved bonding to the nearest point on a gas pipe would give a better reading than fighting to get a to the meter.

Given the wall thickness of BS copper pipe to be 0.8mm 15 / 22mm provide a far better conductive path than even 16mm cable.

Where:
Od = outer diameter
Id = inner diameter

π*(Od/2)²-π*(Id/2)²=CSA/mm²
15mm ≡ 39.69mm² ∴ 248.06% ↑
22mm ≡ 53.28mm² ∴ 362.75% ↑

% improvement based on 16mm²

 

[telectrix]

i'm totally with you there, tony. our gas is bonded on the gas pipe where it passes within 6" of the CU. sod drilling a 11" cavity wall into the garage just to run an extra 20ft. to the point of entry.

 

[oldtimer]

i'm totally with you there, tony. our gas is bonded on the gas pipe where it passes within 6" of the CU. sod drilling a 11" cavity wall into the garage just to run an extra 20ft. to the point of entry.

Especially as it is a continuas copper pipe but you have raised the old BG chestnut where they make their money on as O Dear your gas pipe is not earthed properly as the earth bond is not at the meter