- Joined
- Sep 3, 2012
- Messages
- 15
- Reaction score
- 2
hi everyone.
currently doing some farm work and require some guidance. i currently have a 16mm t+e overhead cable on a 300ma rcd, going to a CU in an outbuilding with a 30ma RCD main switch. I then have a 10mm SWA cable going to an animal shed, fed off a 32a mcb, protected by the rcd 30ma main switch. The armour of the swa is earthed at the supply end and not connected in the shed as it will be a TT system. I was told by a NICEIC inspector last year that there was nothing wrong with using the actual steel structure as means of earthing rather than a earth rod, so I have taken a bond from the steel work in to the CU in the shed which supplies lights and sockets in there. Do i need another RCD in the shed to protect the circuits? Or does the one in the outbuilding suffice?
currently doing some farm work and require some guidance. i currently have a 16mm t+e overhead cable on a 300ma rcd, going to a CU in an outbuilding with a 30ma RCD main switch. I then have a 10mm SWA cable going to an animal shed, fed off a 32a mcb, protected by the rcd 30ma main switch. The armour of the swa is earthed at the supply end and not connected in the shed as it will be a TT system. I was told by a NICEIC inspector last year that there was nothing wrong with using the actual steel structure as means of earthing rather than a earth rod, so I have taken a bond from the steel work in to the CU in the shed which supplies lights and sockets in there. Do i need another RCD in the shed to protect the circuits? Or does the one in the outbuilding suffice?
