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Earth bonding cut for water meter

Discussion in 'Electrics UK' started by RMB, 27 Nov 2019.

  1. RMB

    RMB

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    That 2nd stop tap was installed by the water meter installer. When the lower stopcock is switched off as far as I am aware it does not affect neighbours (our house is the last one in a cul-de-sac.
     
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  3. JohnW2

    JohnW2

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    Where does that branch pipe (the one with the blue wrapping) go, then? - as has been said that's on the supplier's side of the meter, so if it is supplying water to anything inside your house, that will be 'free water'!

    However, the person who fitted the new meter must have seen that pipe, so it presumably must be something 'legitimate'!

    Kind Regards, John
     
  4. RMB

    RMB

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    That supplies the toilet - thanks for pointing that out!
     
  5. JohnW2

    JohnW2

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    Interesting. It would seem that the person who installed the meter didn't really know what he was doing (and/or was lazy - since what he's done is easier than what he should have done!) - since he should have installed the meter upstream of all the pipework supplying your house!

    Kind Regards, John
     
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  7. sparkwright

    sparkwright

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    All looks a balls up to me, get all of it checked out.

    Is that piece of cable between the clamps really thinner than your original bonding cable? Or has he cut your bonding cable and used that piece to provide that link between the clamps?

    Are there warning labels on the clamps?

    And it does look like the toilet is unmetered, unless I am missing the point.

    It all looks wrong to me.
     
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  8. ericmark

    ericmark

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    With my parents house as with many of that age, the earth was the water supply pipe, when the water main in the street was renewed with plastic this earth became ineffective, so when the wet room was fitted this was found out, and the electric supply authority was phoned and asked what earth they should have, and they were unable to answer, so sent some one to investigate who fitted a TN-C-S earth system.

    With the house in question with this tread it could be the cut wire is a bonding cable or an earth cable, from pictures there is no way of knowing.

    If a bonding cable then really it should be extended to after the water meter and reconnected, reason for after meter is if meter removed the pipe work is still bonded.

    If it is an earth cable, then alternative earthing system needs to be found, as using the water pipe is not reliable.

    Since which earth system is used is down to DNO in theroy you can simply phone them and ask if your house has some outside item earthed, and your neighbour also has something outside then unless both earthed with same system one could get a shock touching both (although unlikely) so the DNO has to decide what earth system, they don't need to supply an earth, but they do need to say what earth is used.

    So if DNO says earth is TN then water pipe is not the earth, but bonded, if they say TT then you need to look for an earth pit, in real terms I would not trust a phone call, so I would want some one with electrical knowledge to check.

    A photo of the incoming supply may help, it may be clear as to type of supply, the person fitting water meter should have checked if earth or bonding and it should have been connected, but we don't know where, so maybe neither did he, for all we know he may have reported he had not connected and why.
     
  9. EFLImpudence

    EFLImpudence

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    That is wrong.

    It should be connected, as I said, to the pipe emerging from the ground.
     
  10. JohnW2

    JohnW2

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    As EFLI has said, no matter what the regs may say, that is (electrically) wrong. Apart from anything else, if the meter were ever removed (and not replaced?), there would be no need to bond anything which had previously been on the customer's side of the meter.

    Kind Regards, John
     
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