Spur and trunking conduit

[GeezerJT]

Hi all

I need to install a spur of a ring main, i have no problem with doing this.

However, the wall is concrete so i assume the easiest way instead of chopping out a channel for the cable would be to run it in some cable conduit. As it is for power does it need to be run in a specific type of trunking conduit? and what is the best way to do it as how do you make it good at the original socket so no cable is showing.

thanks

 

[ericmark]

It will all depend on the type of cable you are using. With singles then one would often use 16mm steel conduit although can't really see a problem with plastic but it will be contained through out it's length.
Using Twin and earth or Ali-tube there is no real need for conduit although with twin and earth it is often fitted to stop damage during plastering.
Because of the use of RCD on all new sockets Ali-tube is sometimes used as then one can use a RCD socket rather than use a RCD where it connects to original supply.
But so much will depend on what exactly you already have one can't really give an answer.

 

[Spark123]

I take it you are meaning running it on the surface?

 

[GeezerJT]

yes it will be run on the surface with twin and earth

 

[Lectrician]

It will all depend on the type of cable you are using. With singles then one would often use 16mm steel conduit although can't really see a problem with plastic but it will be contained through out it's length.
Using Twin and earth or Ali-tube there is no real need for conduit although with twin and earth it is often fitted to stop damage during plastering.
Because of the use of RCD on all new sockets Ali-tube is sometimes used as then one can use a RCD socket rather than use a RCD where it connects to original supply.
But so much will depend on what exactly you already have one can't really give an answer.

 

[Spark123]

Is the spur supplying a socket?
Is the circuit already RCD protected?

 

[GeezerJT]

Is the spur supplying a socket?
Is the circuit already RCD protected?

Yes and no i dont think so.

 

[Spark123]

The wire which you are installing in surface trunking or conduit is not concealed hence doesn't need to be RCD protected for this purpose. However a normal socket outlet (unless for a specified purpose) it needs to be protected by an RCD. This can be achieved using a socket incorporating an RCD or by having an RCD installed at the consumer unit.

 

[GeezerJT]

Thanks for the responses.

So can it just be installed in normal trunking where the cover clips on?

 

[Spark123]

Yes