TT system and gas bond

Doomed · Jan 19, 2018

Doing some bits for an old boy and checked the bonding, the gas bond does not go back to the DB or MET, but is staked right next to the main earth rod.
I suppose it will effectively put the pipework in the same equipotential zone as the main earth, but just why make your life harder?

[ElectriciansForums.net] TT system and gas bond

westward10 · Jan 19, 2018

Why do people keep using the term equipotential bloody zone!!

Strima · Jan 19, 2018

westward10 said:
Why do people keep using the term equipotential bloody zone!!

Because we like winding you up...

telectrix · Jan 19, 2018

blue box. blue van. british gas?

Des 56 · Jan 19, 2018

In effect the system now has 2 earthing conductors to 2 points of earth connection in parallel assuming the gas pipe has continuity to the met via the water pipe perhaps
Its not permitted for the service pipe to be used as the means of earthing
Thats what it will do if the resistance of its rod is lower than its mate nearby

stevethesparks · Jan 20, 2018

Des 56 said:
In effect the system now has 2 earthing conductors to 2 points of earth connection in parallel assuming the gas pipe has continuity to the met via the water pipe perhaps
Its not permitted for the service pipe to be used as the means of earthing
Thats what it will do if the resistance of its rod is lower than its mate nearby

That's very true, but may also be the case in many TT systems where other services enter the building in metal pipework.

Des 56 · Jan 20, 2018

stevethesparks said:
That's very true, but may also be the case in many TT systems where other services enter the building in metal pipework.

Very true Steve
The point I was trying to make was I believe the work shown is specifically prohibited by the regs
Its not a bonded service its a secondary earthing point

suffolkspark · Jan 21, 2018

why didn't they just put it onto the other rod ?

ipf · Jan 21, 2018

Doomed said:
Doing some bits for an old boy and checked the bonding, the gas bond does not go back to the DB or MET, but is staked right next to the main earth rod.
I suppose it will effectively put the pipework in the same equipotential zone as the main earth, but just why make your life harder?

View attachment 40331

suffolkspark said:
why didn't they just put it onto the other rod ?

or, for the sake of equipotential difference......just call one Rodney and the other one Roderick........labelled up of course.

Wilko · Jan 21, 2018

westward10 said:
Why do people keep using the term equipotential bloody zone!!

All around me is a zone of equipotential bonding, at least on Saturday nights

telectrix · Jan 21, 2018

suffolkspark said:
why didn't they just put it onto the other rod ?

too easy ( and no money in it

)

Rpa07 · Jan 21, 2018

Wilko said:
All around me is a zone of equipotential bonding, at least on Saturday nights

The book entitled - ‘The conquests of Wilko the Conqueror’, I had you pegged as married Wilko or is that what you are eluding to? Eeewh, with your wife? Disgusting !

Wilko · Jan 22, 2018

Ha ha ha - earth rods and equality rule !

telectrix · Jan 22, 2018

Wilko said:
Ha ha ha - earth rods and equality rule !

only if the rods are the same length.

TT system and gas bond

Doomed

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westward10

Strima

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telectrix

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Des 56

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stevethesparks

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Des 56

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suffolkspark

ipf

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Wilko

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telectrix

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Rpa07

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Wilko

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telectrix

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