SWA into plastic cu

[longers30]

Hi guys just finishing off a rewire where I have a 6mm 3 core SWA Sub main running to an outbuilding. I'm connecting into a 10 way plastic cu in the house which is going to be positioned just under the ceiling in the hallway with the cable dropping down from above into it. Just wondered on the best way to connect the SWA I've heard people mention earthing nuts but never come across them. It is a T-N-CS earthing arrangement and is going on a 40a MCB, non RCD, protected running to a metal clad board in the outbuilding with the 3rd core used as the cpc and armour connected on the supply end. Any advice would be appreciated

 

[shanky887614]

Hi Trev, yeah all the work we done was for local authority, Hospitals,schools when GLC run the show.!!, and it was in the spec, in fact it's never been a situation for me not to provide an cpc in conduit, weather it be black enamel or galvo, still can't see me having ever to thread or set again. lol

Thats why inside the hospitals we use plastic when we can get away with it, always galv in plantrooms though