Bonding water mains in lead

[Chri5]

The client doesn't have a stop cock in the house, they use the outside master stop cock.

The mains supply all the way to the kitchen is all in lead and they won't be changing it any time soon .

So am I OK with bonding to lead? and positioning the bonding under a front bay floor where the lead mains comes in to the property. Lead does oxidize pretty quickly so wouldn't that also be an issue?

Is a standard earth clamp the best for the job or is there something that will make a sweeter contact and not squeeze the soft pipe too much.

As always, thanks.

 

[securespark]

I would advise them to replace the lead. If they don't want to, then the least I would ask for is a stopcock is fitted where it comes in (they need one inside, come on!!). Get the plumber to sweat a piece of copper onto the lead (he'll probably have to do this anyway to fit the cock), then bond to the Cu. (Copper I mean!!)

 

[Biggles..]

you cant sweat copper into lead its against the water regs advise using lead locks from lead to copper. Just need to know the weight of your lead.

 

[Chri5]

So can I bond lead and if so what clamp would you use.

The plumbing will not be changed in the near future, so the actions suggested are very unlikely to happen.

 

[bernardgreen]

So can I bond lead and if so what clamp would you use.

The plumbing will not be changed in the near future, so the actions suggested are very unlikely to happen.

Suugest a word with the water supply company. They may have concerns about electrical connections to lead pipes and possible increase of electrolysis of lead into the water supply. They may offer a free or low price replacment of the lead supply pipe.