Hi Guys
I have a CU in the house with a 20A RCBO there are no spare ways in the consumer unit the RCBO currently feeds a correctly IP rated outside socket. So all good so far however someone has placed a box alongside and incorrectly terminated a SWA cable looks to be 2.5 three core and they have placed it above ground some of the way to a shed. The rest of the installation well don't even go there it's unbelievable.
Anyway my question is it acceptable to extend the radial circuit leaving the outdoor socket in place making sure everything is terminated properly and extend into the shed where another socket would be placed with a switched fused connection unit used to protect the 1.5 lighting circuit. What about the CPC size as this is 2.5mm so too small, I know I need to bond the SWA sheath should this be both ends. There are no extraneous conductive parts.
I think I should I TT the shed SWA bonded at house end only. if so I will have to remove the outside socket from the house and remove the RCBO from the house and replace it with non RCD protected 20A MCB so that if I put a small CU in the shed it will be RCD protected there and there will be no selectivity issues. Obviously an earth electrode for TT.
Any advice appreciated otherwise I was going to follow the NICIEC guidance in which case I will need to TT or change the SWA cable so that the CPC is larger to meet the requirements.
I have a CU in the house with a 20A RCBO there are no spare ways in the consumer unit the RCBO currently feeds a correctly IP rated outside socket. So all good so far however someone has placed a box alongside and incorrectly terminated a SWA cable looks to be 2.5 three core and they have placed it above ground some of the way to a shed. The rest of the installation well don't even go there it's unbelievable.
Anyway my question is it acceptable to extend the radial circuit leaving the outdoor socket in place making sure everything is terminated properly and extend into the shed where another socket would be placed with a switched fused connection unit used to protect the 1.5 lighting circuit. What about the CPC size as this is 2.5mm so too small, I know I need to bond the SWA sheath should this be both ends. There are no extraneous conductive parts.
I think I should I TT the shed SWA bonded at house end only. if so I will have to remove the outside socket from the house and remove the RCBO from the house and replace it with non RCD protected 20A MCB so that if I put a small CU in the shed it will be RCD protected there and there will be no selectivity issues. Obviously an earth electrode for TT.
Any advice appreciated otherwise I was going to follow the NICIEC guidance in which case I will need to TT or change the SWA cable so that the CPC is larger to meet the requirements.