Question re Board Change with Looped Supply

[m4tty]

Hi,

Just wondered if anyone (must be loads of ya) have changed a board with a looped supply where you cant see the incomming cable as its next door. How was it Earthed.

Its a bit naughty if the Earth goes through the wall to next door and next door had work done and forgot to reconnect next doors Earth leaving a dangerous situation?

Any information appreciated.

Thanks

Matty

 

[Andy™]

you cannot normal get access to looped supplies terminals, but for lead, there may be a clamp on each, with a cable between, and then onto MET. sometimes the first house may be TN, and the looped propety TT (seen this a few times)

 

[a1]

I have a loop in my house - goes from mine to next door. I will have to have a check next door (Both TNS).

 

[m4tty]

Hi,

I've looked next door and they've got an ec15 Tenby clamp on the tns sheath with earths going to their board. Would it be allowed if I fed a 16mm earth through the wall next to the looped incommer and join onto the ec15 clamp . Next door said this was ok but a trainee spark who's building a porch for them said it may introduce fault currents from one property to another. Is this correct ? I am thinking my only option is to bang a rod in and make it tt. What do you recon?

Thanks

 

[SLIPSHOD & SLAPDASH]

but a trainee spark who's building a porch for them said

:_| :_| :_|

 

[m4tty]

^^^lol^^^

Will it introduce fault current if this was done?

And i take it this practice is not allowed?

Thanks

 

[SLIPSHOD & SLAPDASH]

I has a similar senario and fitted a rod to my system

 

[SLIPSHOD & SLAPDASH]

It can only introduce a fault curent if there was a fault ! If the neighbours Ze was tested and ok then it can not introduce anything, however it could be disconnected by a future sparky who wondered what it was as it had a high Z

 

[Andy™]

Hi,I've looked next door and they've got an ec15 Tenby clamp on the tns sheath with earths going to their board. Would it be allowed if I fed a 16mm earth through the wall next to the looped incommer and join onto the ec15 clamp . Next door said this was ok but a trainee spark who's building a porch for them said it may introduce fault currents from one property to another. Is this correct ? I am thinking my only option is to bang a rod in and make it tt. What do you recon?

Thanks

no. DNO may change it to TNCS, but you cannot simply convert this TT to TNS yourself.

 

[sparkytim]

Not happy with my advise then?

 

[Andy™]

Not happy with my advise then?

?

 

[Evans Electric]

I guess he can change it to TT though . Could have a situation where next door wouldn't give you access, or the trainee sparks building the porch could decide to disconnect your earth cable for some reason.

 

[m4tty]

Thanks everyone for all your advice its appreciated cheers :coffee

 

[m4tty]

Not happy with my advise then?

Sorry Tim just read your reply on other thread. Cheers mate