Is this an acceptable means of earthing ?

[Modster]

think you'll find out when you do a Ze as per my last post.

Key meter is currently £200 in debt so cant do ZE until its cleared

 

[dez0178]

Hello all,

I am doing a consumer unit upgrade for a family member in a domestic household, However i am unsure if ther earthing arrangement is up to scratch, As it is, the main eartghing conductor is clamped onto the incoming supply conduits. Southern electric have been and installed a key meter with the installation as it is, I am jib approved electrician, but im from an industrial background, Any advice from any of you guys would be greatly appreciated. I have attached some photo's for your perusal.

View attachment 34360

I work for the board, and cables like that ran in conduit are usually VIR or like someone on here has said flat lead , possibly. Usually the conduit runs next door, where their cable will be fed from there cut out. Maybe next-door has a pilc cable and they have took an earth from the pilc to the conduit to give them an earth. But not good, but a means of supplying an earth though non the less. Check next door. Do an earth loop to the conduit and see what the ze is? Looks like they have PME,d it anyway. Look at the earth cable it runs into the cut out, will most likely be terminated to the neutral block inside. A TNC-S system by the looks of it. Will need to check it though. Contact the board if in doubt. Hope this helps

 

[westward10]

This is possible but there appears to be no earth coming from the head in the second picture.

 

[Pat H]

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.
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

 

[7029 dave]

This is possible but there appears to be no earth coming from the head in the second picture.

looks like it to me.

 

[dez0178]

This is possible but there appears to be no earth coming from the head in the second picture.

It is terminated in the bottom of the neutral block, not at the head, like we see most of the time. We have terminated a load like that. But will have to verify that it definetly the case.

 

[dez0178]

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.
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

Yep, an M.E.T, in other words a Main earth terminal.if the ze is okay, but it is properly connected to the possible pilc cable next door? I've seen a few like this.

 

[westward10]

Your explanation is highly possible but where is the earth from the head to the consumer.

 

[LeeH]

Would the 951 clamp comply even if the conduit was the DNO's earth?

 

[7029 dave]

Your explanation is highly possible but where is the earth from the head to the consumer.

Yep give you that looks like zero , so he can bust into that earth lead an block it.