Is this an acceptable means of earthing ?

[7029 dave]

Your explanation is highly possible

 

[Modster]

Many thanks for your help with this guys,

Think ill get the DNO to come have a look just to clarify

 

[Leesparkykent]

Also shouldn't the earth wire on the first clamp be looped through under the screw. Not cut ends?
Not acceptable to loop (on my elec course) bonding with a cut cable.[/B]
But if the 1st pipe is actually the earth then its one cable to feed earth to the house and the second is the only bonding?
Does that make the pipe a MET

No its not a reg just considered best practise.

 

[polo1]

We have lots of supplies like that around here. Main tn-s supply into one property, then looped with vir tails in conduit to the next property. Main earth is taken from the first property via the conduit, to the second property. In fact I've been at two jobs in the past week both with exactly this arrangement.

 

[Pat H]

Why isn'ta 16mm earth run in the conduit as well? Copper would ge better than steel with 2 clamps involved.

 

[Lucien Nunes]

Because it was done in the era when nobody ran a copper earth or CPC if there was a steel containment available to do the job, just standard practice. Perhaps it's time to rephrase the question: "If the DNO supply arrives through a steel conduit that gives a satisfactory Ze when tested, is it adequate to terminate the EC to it with a BS951 clamp and consider the installation properly earthed?"

BTW surely that G/Y cable goes behind the wood to the CU and not into the sealing chamber / cutout?

 

[westward10]

That is highly possible now I look again.

 

[Modster]

Again many thanks for your help with this guys,

I will carry out Ze test as soon as the debt is cleared and power is back on.

 

[davesparks]

What is the earthing system? Is it possible that the DNO have converted it to TNCS and that the earth connections we can see apparently coming from inside the cutout are actually just earthing the conduit?

 

[dmxtothemax]

When the instalation was originally done
that would have been considered as adequate earthing.
Is it considered that today ? maybe not.