Anyone know if it is possible to buy 25mm to 16mm in-line crimps? This would be so useful taking 25mm SWA down to 16mm for CU termination without the need to do 2 x lugs and bolt them together.
Yeah. 4 floor house. Power enters via basement, 1 phase being used for basement flat. Other 2 phases being taken to a ryfield on 1st floor to feed 3 flats above. Bit of a weird one I know as you've got the supply infrastructure split into two locations.
Sorry if people are struggling to follow me on this one.
In short, normally you'd want to have a fused isolator on a sub main. Do you however need to do this for a 'riser', given its not DNO property but sits after their cutout fuses and before the Ryefield, again with its own main fuses?
So the three-phase incoming supply has been split as follows:
Phase 1 > basement flat CU
Phase 2 > 1st-floor Ryefield > ground floor CU + first floor CU
Phase 3 > 1st-floor Ryefield > second floor CU
The SWA needs re-doing and tbh I think I'll spec an additional core to bring all three phases...
So the situation is this:
Historic 4 story townhouse to 4 flats conversion.
Supplier 3-phase cut out coming in at basement level (One of these will have a 60amp fuse, unsure whether the other 2 contain solid links or additional 60amp fuses yet).
1 phase feeding basement.
4-core SWA containing...
The fuses are sealed along the top. The ryefield board had a DNO seal (see photo).
Given the cut out needs to supply meter tails for the basement flat but also the 'riser' for the Ryefield how best would you terminate? Options I see are:
1) Have UKPN move the basement cutout into the communal...
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