Yurt supply

[Soulsurfer]

Btw you can get soil conditioning agents, done by Furse I think that will increase conductivity for the sandy soil if you are hard put to get low ohms on your rod. Soil Conditioning Agent - Kingsmill Industries (UK) Ltd - http://www.kingsmillearthing.co.uk/products/soil-conditioning-agent/ for instance.

Thanks Vort that's spot on

 

[Soulsurfer]

Just a quick check, as getting sorted today. If submain swa is indeed fed from TNCS source in the office cu and then out to yurt and at that end a metal cu with 2-3 circuits power, interior lights and separately 2 x 20W L.E.D. exterior lights all with rcbo protection and earth from TNCS divorced there through a plastic enclosure or similar and then TT rod earth for the cu in yurt. Would I need a simple mcb for the swa sub main out to yurt, or would that require more ? as only time delayed rcd's I can get hold of locally are double pole main switch type ones which would be not really what I need.

 

[Richard Burns]

The SWA is a distribution circuit on a TNCS supply.
The cable is installed in such a way that it is enclosed by an earthed metal covering that is suitable as a cpc. Therefore the regulations do not require any sort of RCD protection to this cable.
An MCB will be fine (of suitable rating).

It is very hard to find any time delayed RCDs for single phase that are not double pole 2 module breakers.
I think I have seen some mentioned but never used anything other than 2M DP.

 

[Soulsurfer]

The SWA is a distribution circuit on a TNCS supply.
The cable is installed in such a way that it is enclosed by an earthed metal covering that is suitable as a cpc. Therefore the regulations do not require any sort of RCD protection to this cable.
An MCB will be fine (of suitable rating).

It is very hard to find any time delayed RCDs for single phase that are not double pole 2 module breakers.
I think I have seen some mentioned but never used anything other than 2M DP.

Thanks so much for that really appreciate taking your time out. It was a grey area for me as things have kind of gone Rcd/rcbo crazy here with most I know in the trade locally & didn't want to get anything pear shaped on the start ! Thanks again such a help.