electrical earth to kitchen

[cyclonebri1]

Hi Chaps, advice apreciated.

We have recently had an extension done to my daughters property. Amongst other thing the old kitchen has now become a dining room and a new kitchen added.

Stopcock, and mains infeed water moved 3 metres.

The old earth to the cold feed which I assume ran directly back to the consumer unit is still in the original position, this was 25 years old and I think 6mmsq.

Can someone clarify what is needed to bring this up to part p spec, the builder didn't allow for anything in this respect within his quote and is now trying to claw back extras.

Am I right in thinking the earth now has to be replaced with a continous run of 10mm cable to the new water main

 

[holmslaw]

..

 

[Risteard]

Before doing any electrical work of any type in any house the earth bonding to gas and water must be sized to comply with the regs

What is "earth bonding"?

 

[cyclonebri1]

Before doing any electrical work of any type in any house the earth bonding to gas and water must be sized to comply with the regs, and you're correct the cable should be 10mm².

So he should have allowed for it to be replaced.

yeah, thanks that was in the back of my mind from years ago.The building contractor was unaware of this which is a little strange as the electrition is his son

The whole job is good with just a few add ons, just needed the facts to decide how to procede.

Thanks again.

Ps he hasn't mentioned anything about bonding to gas, may save that for later

 

[holmslaw]

..

 

[Taylortwocities]

Holmslawski must have a different version in the jungle.

My copy of BS7671 has a definition for Earth and for earthing.
Also a definition for Bonding Conductor.

Can you tell me where I can find the definition for earth(ing) bond(ing)? I can't find it in definitions or the index.

I will (as always) bow to your greater knowledge, if you are correct.

 

[Electrifying]

Before doing any electrical work of any type in any house the earth bonding to gas and water must be sized to comply with the regs

What is "earth bonding"?

You could also argue that 'earth bonding' is the bonding of Extraneous Conductive Parts to the means of earthing - although I don't use the phrase myself.

 

[Risteard]

whereas "main equipotential bonding conductor" is an overly wordy phrase constructed by someone lacking basic common sense and communication skills.

Unless you are referring to the 16th Edition they are in fact called main protective bonding conductors.

 

[Mursal]

Earth bonding is the connection of gas and water pipes to an earth point using 10mm square earthing cable.

 

[Taylortwocities]

Earth bonding is the connection of gas and water pipes to an earth point using 10mm square earthing cable.

Are you related to Holmslaw in some way? You can't go inventing terms or combining definitions just to come up with a handy phrase. You may think it is earth bonding but it is not.

It is not Earth bonding. There is no such thing.

Your description (above) is of Protective Equipotential Bonding as described in 411.3.1.2.
The conductors that provide the Protective Equipotential Bonding connect to the main earthing terminal. The point of this little intercourse is to discover where in the regulations there is a definition of Holmslaw's "earth bonding".

Please tell me the paragraph where the term earth bonding is defined.

 

[Risteard]

Indeed.

Given that earthing and bonding are entirely different things which serve entirely different purposes the whole concept of "earth bonding" is frankly ludicrous.

 

[Electrifying]

Indeed.

Given that earthing and bonding are entirely different things which serve entirely different purposes the whole concept of "earth bonding" is frankly ludicrous.

Unless of course, by 'earth bonding', you are referring to 'Earthed Equipotential Bonding' as opposed to 'Earth-free Equipotential Bonding'.

EEBADS may be gone in the 17th, but the above scenarios are still very much relevant.

 

[Risteard]

Unless of course, by 'earth bonding', you are referring to 'Earthed Equipotential Bonding' as opposed to 'Earth-free Equipotential Bonding'.

EEBADS may be gone in the 17th, but the above scenarios are still very much relevant.

In fairness though, "Earthed Equipotential Bonding with Automatic Disconnection of Supply" makes a lot more sense than "earth bonding" which is meaningless and contradictory in nature!

 

[Electrifying]

In fairness though, "Earthed Equipotential Bonding with Automatic Disconnection of Supply" makes a lot more sense than "earth bonding" which is meaningless and contradictory in nature!

Here's another contradiction for you - What do you connect to this? .....

http://www.toolstation.com/shop/Ele...lamp+1232mm+ECL14+Interior/d190/sd2620/p88231

 

[Taylortwocities]

A length of this, maybe?