Hi, recently did an eicr on flats, the electrician that wired them is no longer available!?! I made a note of the lack of bonding to the mains water incomer, the builder disagrees and stated that he has had 2 electricians and a lecturer look at this and it doesn't need any due to the amount of copper present, the copper pipes drop about 12 inches below the Worktop before changing to plastic, the tank is also copper. I can't find anywhere that states the amount of actual copper piping required before bonding is necessary.
Bonding issues - yes or no
- Thread starter Hatsoff
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Is it an extraneous conductive part?
If it is an extraneous-c-p
The amount of copper is irrelevant.
Supplementary bonding is not required anywhere other than bathrooms and the like. This may be easier to do in an airing cupboard but it is not required there in its own right.
The amount of copper is irrelevant.
Supplementary bonding is not required anywhere other than bathrooms and the like. This may be easier to do in an airing cupboard but it is not required there in its own right.
I am classing it as extraneous and they are not, that's the problem, as you can see the meter and incomer is in the picture, the problem is the builder doesn't want to get another cable from the db in the cellar below as it's all decorated and finished
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What, in your eyes, makes it an extraneous conductive part?
And why do they disagree?
And why do they disagree?
It's not a question of classing it one way or the other.
It either is an extraneous-conductive-part or it isn't. You can't tell by looking at it.
The pipework in the cupboard is probably immaterial unless it has travelled through the ground between the entry to the premises and the cupboard. If it isn't a ground floor flat then it can't have.
It is at the point of entry to the premises which counts and should be tested by measuring the resistance between it and the MET after disconnecting it from the rest of the pipework in the premises.
If this is plastic then it won't/can't be an extraneous-c-p and you will have a job getting an electrical connection to it.
Sorry, but should you be doing EICs?
It either is an extraneous-conductive-part or it isn't. You can't tell by looking at it.
The pipework in the cupboard is probably immaterial unless it has travelled through the ground between the entry to the premises and the cupboard. If it isn't a ground floor flat then it can't have.
It is at the point of entry to the premises which counts and should be tested by measuring the resistance between it and the MET after disconnecting it from the rest of the pipework in the premises.
If this is plastic then it won't/can't be an extraneous-c-p and you will have a job getting an electrical connection to it.
So the main incoming supply is not in the picture, then.
Sorry, but should you be doing EICs?
That's not the criterion.
Because it's an extraneous-conductive-part and not part of the electrical installation.
Spoons are conductive and not part of the electrical installation
...but you said the pipe goes below and changes to plastic.
The point is none of us can say whether it is or isn't an extraneous conductive part - you must prove this one way or the other.
I presume you know what the definition of an extraneous conductive part is?
You wouldn't, because it is not an extraneous-conductive part - any more than is pipework unless, as EFLI has said, it has travelled through the ground subsequent to entering the premises (and being bonded there).
It wasn't a 'clever dick' answer - it was a useful analogy, to try to help you to understand. You have been given the right advice. The pipework only (possibly) needs main bonding if it is an extraneous-conductive-part, and nothing you have told us so far suggests that it is.
Kind Regards, John
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