Collective Wisdom re Bonding

[PaulWales]

Wales n West are in the process of renewing our gas main from metal (?steel) to lovely yellow plastic.

The previous system was bonded to the MET from immediately after the meter.

Should the original metal pipe, that now acts as a conduit for the new plastic main, be bonded where it enters, or just left alone.

I ask this at least partially in relation to something I've seen about many houses "need" an external "rod" to fully comply with the latest regs coming out next year.

IMG-20170921-WA0001

• PaulWales
• 21 Sep 2017

Many thanks

 

[EFLImpudence]

The previous system was bonded to the MET from immediately after the meter.

Your picture - or text - is confusing. I can see the bonding conductor but no meter.

Should the original metal pipe, that now acts as a conduit for the new plastic main, be bonded where it enters, or just left alone.

Again confusing. If you have a metal pipe emerging from the ground it must be bonded.

I ask this at least partially in relation to something I've seen about many houses "need" an external "rod" to fully comply with the latest regs coming out next year.

You don't have to worry about that yet and, anyway, it does not affect other bonding.

 

[mwatsonxx]

It should remain bonded, because the steel pipe will still be in contact with external ground. When the job is finished there should not be any visible yellow plastic pipe in your premises.

 

[EFLImpudence]

Am I being confused - that copper pipe - is that the water?

Is that grotty looking yellow the new gas?

 

[mwatsonxx]

Is that grotty looking yellow the new gas?

Yes

 

[PaulWales]

Sorry no meter at the moment, and I'm not at home so photo is from my wife.

THe copper pipe (and the lead pipe disappearing into the plaster is the current internal gas pipe(s). The bonding cable is connected to the first few centimeters of the internal pipework , before the first branch.

I have assumed that there will be no connection between the steel pipe through which the new gas main has been run and the meter, and my questions are based upon that assumption.

 

[EFLImpudence]

I have assumed that there will be no connection between the steel pipe through which the new gas main has been run and the meter.

It should be bonded.

The regulation about connecting to the consumer's side of the meter is quite simply electrically wrong.

Having said that, the copper pipe will be connected to earth by the boiler and other appliances so it is not going to make a lot of difference.

 

[JohnW2]

I have assumed that there will be no connection between the steel pipe through which the new gas main has been run and the meter, and my questions are based upon that assumption.

As has been said, my understanding is that it is not permissible for a gas supply to enter a property (certaintly a domestic property) in plastic, What enters your house will therefore hopefully be metal, and whether or not it needs to be bonded depends upon the route. As has been said, if it enters your house 'out of the ground', or exists anywhere underground (after the transition from plastic), then it will need bonding.

Kind Regards, John