Hi
just had a consumer unit changed in a ground floor flat that i own in Newport Gwent
Flat is fed via a cable that pos out of the floor and terminated in a 415v steel box.
One phase is then split out and feeds my local meter and CU.
The remaining cables are then fed up to the ceiling, where they go through to the 1st floor flat. I then assume that phase 2 feeds the flat, and phase 3 is then routed to second floor flat.
In my flat the original CU has been replaced with a new BG box with 5 RCBO for the various circuits.
Job went very well and all circuits test correctly.
However , when doing final tests my electrician noted a Ze of 1.7ohms He advised me it should be 0.8ohms
From what I understand the earth issue is the responsibility of DNO (Western Power), as the earth was installed by the original DNO (unknown).
What can be done to resolve this?
The block of flats was originally Council built and owned, but now have mixed ownerships.
Because of new legislation relating to Landlords within Wales, i am obliged to carry out the necessary board upgrades etc, and I'm pretty sure that the 2 flats above are still owned by Local Housing Authority. Therefore im sure that the above flats would already have had the the board changes etc.
However the 2 flats rely on the common earth path through my property.
Am i correct in saying that the Ze in the other flats should have only been tested with the earths in the other 2 flats are disconnected (Parallel earth paths) ?
Is 0.8ohms an absolute max or is there any guidance for the issues described above?
cheers for reading this post.
just had a consumer unit changed in a ground floor flat that i own in Newport Gwent
Flat is fed via a cable that pos out of the floor and terminated in a 415v steel box.
One phase is then split out and feeds my local meter and CU.
The remaining cables are then fed up to the ceiling, where they go through to the 1st floor flat. I then assume that phase 2 feeds the flat, and phase 3 is then routed to second floor flat.
In my flat the original CU has been replaced with a new BG box with 5 RCBO for the various circuits.
Job went very well and all circuits test correctly.
However , when doing final tests my electrician noted a Ze of 1.7ohms He advised me it should be 0.8ohms
From what I understand the earth issue is the responsibility of DNO (Western Power), as the earth was installed by the original DNO (unknown).
What can be done to resolve this?
The block of flats was originally Council built and owned, but now have mixed ownerships.
Because of new legislation relating to Landlords within Wales, i am obliged to carry out the necessary board upgrades etc, and I'm pretty sure that the 2 flats above are still owned by Local Housing Authority. Therefore im sure that the above flats would already have had the the board changes etc.
However the 2 flats rely on the common earth path through my property.
Am i correct in saying that the Ze in the other flats should have only been tested with the earths in the other 2 flats are disconnected (Parallel earth paths) ?
Is 0.8ohms an absolute max or is there any guidance for the issues described above?
cheers for reading this post.
