Hi,
I’ve got a brick built outbuilding as an annex next to the main house (not physically attached) and I’d like to think about converting it from TT to PME. Main house is TN-C-S and the buildings are connected with 25M of 3-core 16mm SWA (one core currently unused). However there’s an external metal oil boiler outside the outbuilding (it's bonded to sub main CU). Water feed pipes/oil/etc from house are all plastic.
Reason for wanting to do this is excessive Zs, especially sockets which get about 16ohms. (Due to the earth rod Ze impedance).
I don't know if it's a snag, but the SWA armour is already cut back at the outbuilding CU (in a plastic stuffing gland) and would be fairly difficult to reconnect using a full brass SWA gland. There is obviously a spare 16mm core of the SWA though. The SWA armour is earthed at the house end.
Does anyone see reason why I can’t convert the outbuilding to PME?
Cheers,
Dave
I’ve got a brick built outbuilding as an annex next to the main house (not physically attached) and I’d like to think about converting it from TT to PME. Main house is TN-C-S and the buildings are connected with 25M of 3-core 16mm SWA (one core currently unused). However there’s an external metal oil boiler outside the outbuilding (it's bonded to sub main CU). Water feed pipes/oil/etc from house are all plastic.
Reason for wanting to do this is excessive Zs, especially sockets which get about 16ohms. (Due to the earth rod Ze impedance).
I don't know if it's a snag, but the SWA armour is already cut back at the outbuilding CU (in a plastic stuffing gland) and would be fairly difficult to reconnect using a full brass SWA gland. There is obviously a spare 16mm core of the SWA though. The SWA armour is earthed at the house end.
Does anyone see reason why I can’t convert the outbuilding to PME?
Cheers,
Dave