• Welcome to PlumbersForums.net (formerly UKPlumbersForums.co.uk). Please login with your usual username and password. Or register for free if you haven't already done so.

Discuss Main equipotential bonding to gas supply in the Gas Safe Register Forum - Public Forum area at PlumbersForums.net

polo1

Member
Messages
45
Reaction score
0
Hi all, electrician from the dark side looking for your views please.
Background- We are working on an unusual job, bit of a mini castle converted into flats.
Gas has been installed in five flats (not recently) but have never been fitted with main equipotential bonding.
We’ve looked at the properties involved & it’s well nigh impossible for us to run the 10mm bond without major disruption and possible damage to centuries old wall panelling & floors.
In the electrical regs, we don’t have to bond the gas if the copper supply immediately after the meter has an insulating section (plastic?) installed (the pipe can’t then introduce a different potential).
So, question...is it permissible for a gas safe registered engineer to install such an insulating section?
Thanks in advance for your thoughts.
 

ShaunCorbs

S. Mod
Trusted
Plumber
GSR
Messages
22,943
Reaction score
6,074
No cant use plastic

But more than likely the supply to the meter will be plastic

Could you use an earth rod (thinking out side of the box) ?
 
OP
P

polo1

Member
Messages
45
Reaction score
0
Thanks for your thoughts guys. Out of curiosity, is it because gas distribution mains are covered that they can be in plastic, but accessible gas pipe has to be steel/copper?
 

ShaunCorbs

S. Mod
Trusted
Plumber
GSR
Messages
22,943
Reaction score
6,074
Can’t have plastic above ground

And if it’s been renewed they just install a new plastic pipe through the old steel supply
 

scott_d

Plumber
GSR
Messages
4,071
Reaction score
890
Thanks for your thoughts guys. Out of curiosity, is it because gas distribution mains are covered that they can be in plastic, but accessible gas pipe has to be steel/copper?
UV rays will make it brittle
It’s also easy to cut/damage
 

ShaunCorbs

S. Mod
Trusted
Plumber
GSR
Messages
22,943
Reaction score
6,074

Murdoch

Active Member
Messages
449
Reaction score
110
Interesting question .

Flats raise a number of issues and this isn’t unusual.

The last time I encountered something similar, the incoming gas, all the meters and the incoming lecky and meters and switch fuses were in the same cupboard .. so the bonding cables were all run in the same cupboard

As for an Earth rod, that doesn’t produce the desired outcome of equipotential bonding as the rod would not be connected to the met ...

Hope this helps
 
OP
P

polo1

Member
Messages
45
Reaction score
0
Folks, apologies for the delay in coming back to this issue. I’m now aware that in the commercial/industrial sector, there is a device which can be installed in/on a copper gas pipe which breaks the (electrical ) continuity of the pipe. Does anyone know if there is a domestic sized equivalent to fit a 22mm dia copper pipe?
 
Messages
218
Reaction score
31
IGEM/g/5 edition 2, looks like it covers your particular situation.
Appendix 5 covers several different types of multi occupancy buildings.
Also a call to gas safe technical may help find a product that could be used in the UK. you can google the igem doc
 

Forum Sponsors

Corgi - Plumbing Supplies for Professional Plumbers - Plumb Advice

Plumbase - Plumbing Parts for Plumbers - Plumbers Advice

Power Shower Booster for Power Showers - Plumbing Advice

Underflor Heating Systems by uHeat - Plumbing Advice

Wetroom Supplies by Wetroom Store

Nicobond - Wetroom and Tiling Supplies - Plumbers Installation Advice

Corgi - Plumbing Supplies for Professional Plumbers - Advice for Plumbers

Top Bottom