Do you have to protect submain if wired in SWA?

[rosewood]

Hi Guys,
Sorry title should have been 'do you have to protect a submain with an rcd if wired in SWA?'

Please excuse me if this has already been asked but i cant find a straight answer to question...

I need to change a fuseboard for a split load board (2x 30ma 63amp RCD's). off this board there will be a sub main to a garage split load board which feeds some stables and a barn etc.

The board i have to change is already got 3x32a circuits and 4x6a circuits (re-wireable fuses). If i change it to a new 17th board where the main RCD's are 63amp can i still put a 63amp mcb on this board (protecting 16mm SWA to garage buried 600mm)?

Thanks

 

[Marko10010]

Best thing to do is for the other spark to confirm where in the 17th Ed it would be a requirement.

That would be a good idea. As far as I know the 18th hasn't changed in that respect either.

 

[westward10]

No it hasn't.

 

[Marko10010]

No it hasn't.

Good man!!

Not that it actually matters as they are all non statutory regs but still... better to adhere to the when possible ?