Ring spur and RCD

[Couleddie]

House with no RCD protection. When fitting non fused spur off ring i'm assuming that in order to comply I need to RCD the spur as cable will be buried in wall less than 50mm?? So, RCD FCU next to existing ring socket? Not arguing against RCDs but seems bizarre to RCD what equates to 2 metres of cable whilst rest of installation remains unprotected. Could RCD whole circuit but more time consuming and therefore more costly plus possibility of throwing up other issues. Not that I object to possibility of more work but just trying to justify costs as well as do a good job.

 

[Zeespark]

What sort of fuseboard is it eddie? could it be possible to install an RCBO at all?

AndyGuiness Drink

 

[Couleddie]

This may sound daft but I haven't looked yet. Only had a brief visit so I'm assuming the house has no RCD due to the parts of the wiring I HAVE seen. I'll probably find it's got a brand new 17th edition board and complete main earth bonds. Then i'll come back to reality.

Hadn't thought of the RCBO route. Will bear that in mind.

 

[kme]

Would be preferable, in my mind. If I was adding a spur to ANY circuit, I`d be verifying the integrity of the whole circuit anyway; plus main earth & bonds. Therefore, to my mind, if I`m altering the circuit, then I should also be bringing the whole circuit up to scrach; i.e. RCD protection.

Just my opinion mate.

KME

 

[Couleddie]

Would be preferable, in my mind. If I was adding a spur to ANY circuit, I`d be verifying the integrity of the whole circuit anyway; plus main earth & bonds. Therefore, to my mind, if I`m altering the circuit, then I should also be bringing the whole circuit up to scrach; i.e. RCD protection.Just my opinion mate.

KME

Obviously i'll be checking the circuit before I begin and it would be preferable in my mind to upgrade the protection appropriately but it all depends on the age old scenario of how much the customer wants to pay. I suppose protecting the spur with an RCD FCU is the minimum that would satisfy the regs although it does seem excessive for a single socket.

 

[Andy™]

you will need to protect what youve added as a minimum. i.e RCD spur at point you take supply from ring. but it could be easier to just RCD the entire circuit, of the house if necessary

 

[NozSpark]

From my point of view you should be checking Zs, ring continuity and IR as a minimum for the circuit anyway,, and fixing any problems that you find...

So adding a RCD at the source of the circuit will not cause any problems

 

[batty]

As others have said all depends what customer wants to spend. Ways of getting over not Rcd protecting are surface trunking or conduit. Earthed metal conduit in wall if its being buried or swa if you fancy. So Rcd is not the only option.

Batty

But if its a socket and not a spur it will need Rcd protecting any way. Don't worry I will go back to reading other posts.