Hi guys. How would you code a Concentric cable feeding a detached domestic garage. Cable is i believe a short run under a tarmac drive although i can't find the house connection ( probably behind kitchen cupboards ). There is plenty wrong with how it has been connected but specifically the use of the cable. I was thinking a C3 as i don't think it's dangerous as unlikely to be damaged in the ground because of the tarmac. Any thoughts please.
Thanks Gary
Spilt con is OK in a domestic setting, although for several editions of the regs now (early 2000s ?), it has not qualified as truly 'armoured' as some of the wires that surround the live cores are 'neutralled' not earthed But routed on the surface or in an obvious duct providing mechanical protection, it is still better than T and E, and can certainly be used where that would be acceptable. Example image from here
I'd be wary of plain concentric on consumer side of the meter,
as there is no CPC (or no neutral, depending how wired.) It may be OK with neutral on the outside so long as inside a metal trunking acting as CPC I suppose.
More info needed to decide, but low risk.
Mike.
