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Would I be right in saying then in this situation the easiest way to do this for a decent size shed or domestic garage would be to use a 3 core 10mm SWA or separate 10mm earth from the garage/shed to the house. Obviously 10mm swa is not really required for a small metal garden shed so then you...

Can you please expand on this for me please,I dont quite understand, is this something to do with a situation when the earth conductor in the SWA may not be of a sufficient size to be the submain earth?

Sorry should have read TNS supply, but anyhow just out of interest does it make any difference to my original question as to the connection of the armour to earth if I used my third core of the SWA as an earth??

Just a quick question, Im in the process of taking 3 core 6mm SWA to the garage from the house CU, glanding into MK enclosure in the garage, using 3rd core as earth from house to garage enclosure, Im on TNCS supply do I connect the panhandle on the armour to the earth bar using a 6mm earth...

Thanks for the replies again. Can someone just clarify the following for me: I plan to install a 40A breaker in the house to supply the garage. My main board (non rcd) will then have the following: 3x40A MCB's for shower, cooker and garage 3x32A MCB's for downstairs ring (2off) and...

Lost on me now, how do I know if Im on a TT supply or not?? Think ill leave the tail ends at the house CU for someone who does this for a living to connect but Ill do the rest myself and get it checked before connection into the house CU. Thanks

Thanks for the reply The reason I was going to put an RCBO somewhere on the combined circuit was because at some point I will need to use the welder outside the garage possibly so I would also need RCD protection on the welder outlet as well as the socket outlet so I preferably wanted to put...

Just a quick question, I am in the process or putting a 6mm SWA supply to my garage to run a 20A welder with its own supply, 32A socket ring and 6A lighting circuit from a new small CU on the garage wall The garage is detached from the house, where is it legally required to fit an RCD, on...