is it a regulation to cross bond the heating pipes under the boiler?

[Dantheman]

is it a regulation to cross bond the heating pipes under the boiler?

 

[mackers]

niceic say no gas safe say yes and the man from del monte dosen,t know!!!

 

[tony mc]

There is no regs that say you have to cross bond heating pipes under a boiler.

 

[Megavolt]

niceic say no gas safe say yes and the man from del monte dosen,t know!!!

Where does gas safe say yes.

 

[mackers]

Where does gas safe say yes.[/QUOTE

my mistake elrick just read email from niceic regarding this the problem was boiler manufactures stated this in fitting instructions!
memory not that good was dated 2008 fowarded from corgi LOL#

 

[Adam W]

It sounds as if that's what was called 'earthed equipotential bonding' which was a requirement for fault protection under the 16th but isn't under the 17th.
So if the electrical installation was installated before the 17th edition you would need to, otherwise not.

 

[rich.250]

If its a manufacturers instruction it must be followed.
If not you could just continuity test it to see if it needs it. I doubt it will!!
If you have Rcd protection, and bonding to incoming service positions. And all exposed pipe work is 'effectively' connected to the MET cross bonding is not required. This is where the continuity testing is necessary.

 

[needasparks]

Must say .I always do it. belt and braces. The time it takes to test the pipework from the MET is the same to do it. Also it can stop any future problems arising from any alterations to pipework at a later date.

 

[wildgoose]

If its a full 17th Edition electrical system, then my understanding is that it's not needed. However, the Gas Safe people say it should always be done - just to cover themselves I think.
Would you trust a plumber to make the 17th edition decision???

 

[rich.250]

If its a full 17th Edition electrical system, then my understanding is that it's not needed. However, the Gas Safe people say it should always be done - just to cover themselves I think.
Would you trust a plumber to make the 17th edition decision???

You still need to meet the above criteria. Which yes a lot of 17th circuits do.
As for trusting a plumber........
I think there should be a regulation on that LOL

 

[DNS1]

Surely the pipes under a boiler are going to be bonded by the boiler itself?

 

[malcolmsanford]

I still amazed that manufacturers are insisting on bonding metal work that may not be extraneous conductive parts, surely it should be beholding on them to recommend an electrician test the pipe work to ascertain what it is.

I really can see an incident happening, where we have bonded these pipes and a fault occurs within the installation, and for a fraction of a second these pipes become an earth path, and someone is touching them.

I'm all for not taking chances and doing the over kill, but bonding pipes that don't need bonding, is not belts and braces, it's wrong

 

[nickblake]

Totally agree Malc ive a pic some where where the pipes have been sup bonded and they are plastic

 

[supasparxs]

I feel that is something that the plumber should do if he want to do.
or we should charge it as a variation.

If we have an installation up to the 17th edition why should we waste time and money pulling an earth cable in for the plumber

 

[rich.250]

Supplementary between pipes is only about a foot of cable. But I'm sure the boiler has better continuity through it.