Hi all, NICEIC are coming back a.m. to see me for AC upgrade but I have a small problem, as they saw two big jobs last time 3wks ago or less, I can use my place CU upgrade & move for the job this time, problem being I've got EIC for the works I've done and all on RCBO's now but on iCertifi I need supply parameters and origin details. I'm a little stuck here as got Ze at my cu inc PEFC & PSSC but mains room serves 12 flats, is TN-S and through a BS5419 switch fuse which I think is 60A rewirable fuse inside carrier but do I need to do Ze from the DNO line in there to a disconnected main earth from them ? & if so as I can't kill power down there at switch to get cover off or what do I do ? Would we always need to go right to source like this when this kind of arrangement is supplying say flats or HMO's? Also need to find a kA rating on the old fuse down there ?
Thanks anyone who can help !
Thanks anyone who can help !