Power to garrage

[sivoodoo]

Hi all,

Does the SWA from the house to the garrage have to be 30mA protected?

Im thinking it does?

Regards

Si.

 

[malcolmsanford]

No you don't have to protect the SWA with an RCD. In the case of this sub main you can connect it without RCD protection, and if your fitting a CU in the garage then you can have the RCD protection there if it is required.

 

[sivoodoo]

Brilliant. Thanks,

The only feasable place to take the power from is from the ground floor ring, so would i be correct in using a FCU spur from the ring to the swa then out to the garrage and a garage CU.
Its just for lighting and 1 socket outlet.

 

[Paul.M]

Correct me if I'm wrong but the reason why we have rcd is to protect the cable if its not 50mm sunk etc. So using swa supersedes the rcd requirement. If you were using pvc/pvc t+e without mechanical protection the answer would be yes, rcd needed.

 

[Deleted member 26818]

If concealed in a wall yes.

 

[Paul.M]

Brilliant. Thanks,

The only feasable place to take the power from is from the ground floor ring, so would i be correct in using a FCU spur from the ring to the swa then out to the garrage and a garage CU.
Its just for lighting and 1 socket outlet.

Is the ring your spurring from rcd protected?

 

[malcolmsanford]

Is the ring your spurring from rcd protected?

Please please please don't ask if it's TNC-S

 

[telectrix]

Please please please don't ask if it's TNC-S

wonder why?????

 

[Deleted member 26818]

Please please please don't ask if it's TNC-S

Can we ask if there are extraneous parts in the garage?

 

[malcolmsanford]

Brilliant. Thanks,

The only feasable place to take the power from is from the ground floor ring, so would i be correct in using a FCU spur from the ring to the swa then out to the garrage and a garage CU.
Its just for lighting and 1 socket outlet.

To be honest why are you thinknig of fitting a CU there if it's just going to be a single light and a single socket. If the Ring Final Circuit is RCD protected then just fit a FCU with a 13 amp 1361 cartridge fuse into the socket in the garage and then another FCU with a 3 amp for your light

if the ring final is not RCD protected then you could fit an RCD FCU.

 

[sivoodoo]

No RCD protection in the house.


The cu is in a tiny cupboard, no access to anything all recently boarded in and decorated! (why do people call the electrician after decorating???)

 

[Deleted member 26818]

No RCD protection in the house.


The cu is in a tiny cupboard, no access to anything all recently boarded in and decorated! (why do people call the electrician after decorating???)

I think they believe electricity can walk to where it needs to be.

 

[telectrix]

or do they think we now have wi-fi sockets?

 

[sivoodoo]

My initial design was to fit a RCD FCU spured from the ring main.

as mentioned no RCD in the house

 

[telectrix]

My initial design was to fit a RCD FCU spured from the ring main.

as mentioned no RCD in the house

fine, just need RCD FCU in garage. not necessary at house end and more convenient if trips when you are in the garag as it is a spur from the ring final.e. SWA must not exceed 2.5mm