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Its SP&N supply, gonna put 3 core SWA so will use one of the them as earth aswell as armour, I think this should give me satisfactory Zs values How found some decent fused switch disconnectors that would be appropriate for accepting the lugs of my 25mm2 tails one side and 120mm2 Swa other...

cheers for that, sounds good, I realised that before, I will have no choice but to carry on the PME earth, it would be pretty difficult to terminate that size of cable into anything but metallic and that would be an earthing issue anyway, unless I snook an s' type rcd into the 25mm tails at...

Yes, the land is neither, its just a piece of land i hope that one day will have house on it, right over the little brick shed that houses the new supply which i hope one day will be under my stairs. Id rather have TN-C-S now than call them back later, any STORAGE SHEDS, that i build for the...

so i need a 60amp switch fuse with 120mm2 terminals? know any contenders?? Like the idea of steel cabinet and small busbar option could then run my 25mm tails straight through to CU. But decided to carry the PME earth right through and add earth rod also "belts and braces" many thanks

im not going to terminate the earth at the cu end, im gonna TT it, for the reasons, distance etc

Ok i have no idea why i wrote xlpe!!!! must have it on the brain! Could get away with 95mm2 Swa but i have further voltage drop issues to consider when it comes to the final circuits connected to the Cu unit im terminating into. But im still not sure what to do with the switchgear side...

Worked out by using voltage drop calculation from bs7671 including grouping factors and the fact i'll have ill have slightly higher Soil Thermal Resistivity (its going in 1m deep, to avoid land work issues)

Just had a new supply fitted to the corner of a field in my small holding, PME 100A SP Located in a small brick building. I need to get a 60 amp supply over some distance about 300 metres, for which I will need 120mm2 xlpe 90 SWA. Buried direct in ground Anyone got any ideas what switch gear...