Gas meter earth clamp

[SALL2009]

The gas meter in my property is not earth clamped to the electric meter. Is earthing the Gas meter to the electric meter a must?
The electric meter is installed in a cupboard inside the property and Gas meter is outside. The earth cable would need to run along and outside wall of the property. Would the cable need to run in a pipe? Or could I just clip it to the wall? If a pipe is required, does it have to be a certain type?

 

[stephenf8542]

You can run the earth from where the gas pipe enters the property to your main earth connection

 

[ericmark]

411.3.1.2 Protective equipotential bonding
In each installation main protective bonding conductors complying with Chapter 54 shall connect to the main earthing terminal extraneous-conductive-parts including the following:
(ii) Gas installation pipes
542.2.4 A metallic pipe for gases or flammable liquids shall not be used as an earth electrode. The metallic pipe of a water utility supply shall not be used as an earth electrode. Other metallic water supply pipework shall not be
used as an earth electrode unless precautions are taken against its removal and it has been considered for such a use.
544.1.2 The main equipotential bonding connection to any gas, water or other service shall be made as near as practicable to the point of entry of that service into the premises. Where there is an insulating section or insert at that point, or there is a meter, the connection shall be made to the consumer's hard metal pipework and before any branch pipework. Where practicable the connection shall be made within 600 mm of the meter outlet union or at the point of entry to the building if the meter is external.

So that's what the regs say. The meter box outside is often considered as the point of entry but with my parents house the pipe then runs outside the length of the house and truly enters the premises at back of the house.

As long as somewhere there is a connection likely you are OK. Whole idea is that if you have an earth fault in the house and as a result the earthed metal in the house gets raised in voltage in respect of true earth that this happens to all earthed metal otherwise touching a water and a gas pipe at the same time could give you a shock. Gas pipes are in the main soldered so they are unlikely to have any high resistance joints so in the main it does not matter where they are bonded as long as they are bonded.

 

[Steve]

The gas meter in my property is not earth clamped to the electric meter.

Good!

Neither meter is earthed.

However, you must bond the gas main to the main earth terminal.