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  1. F

    SWA or else?

    Sorry Dave - didn't mean to imply the load calculations were totally irrelevant - only that (fortunately) I don't have to worry about them, so are now "irrelevant to my question" as you've convinced me that 100A/25mm is the way to go. The existing barn cu & PV installation are currently...
  2. F

    SWA or else?

    The load calculations are for the electrician to calculate/certify and seem indeed to be irrelevant to the 10m cable run (25mm²) it's back to the original dilemma - will SWA be mandatory for physical protection (as I hope the existing Solar PV DNO's TN-C-S earth or separate run will meet...
  3. F

    SWA or else?

    That's my intention, but as I live in the boonies, I think it's only considerate to give a flavour of what I want done, to save a wasted journey to quote for a job that's either impractical or too expensive to quote for. I'm also worried that a just any implied potential for a 3-core 25mm SWA...
  4. F

    SWA or else?

    Thanks for the confirmation - in old money 3-core 25mm SWA must have all the flexibility of a 1" pipe & that's my potential problem whether DIY cable-monkey or not. Finishing and connecting 25mm SWA will also not be cheep, hence the hope of finding enough information to be able to...
  5. F

    SWA or else?

    I started this post really only looking for a guide as to whether or not SWA would now be mandated for the surface mounted connection of a new supply across (an unheated space) to an existing CU some 8-10m away as the new connection will still need a "main switch" and "main board" to fit into...
  6. F

    SWA or else?

    Yes - one for old "main" board circuit (8-10m away across the barn) and the other for the new "shed" sub.
  7. F

    SWA or else?

    Again, thanks for all the input. What I failed to mention at the outset was that, as there's been trenching and ducting involved for the new supply, a shed supply was also laid with 3-core 10mm². With a new sub-main for the shed plus the pre-exiting CU both to be connected, the 100A DP switch...
  8. F

    SWA or else?

    Dave Thanks for the clarification. 25mm² meter tails to 100A DP switch, then 3-core required (either 3-core SWA or 2-core & separate 16mm² earth as any 3-core SWA is labour sensitive to cost) but 16mm² SWA is OK as per on-line Voltage Drop Calcs for 100A/23kW? Obviously I can await an...
  9. F

    SWA or else?

    Thanks for all the in-puts & it looks like I can initially leave the spec open & then can query any differences that are evident on prices if they don't elaborate. One immediate feed-back I got from a visiting sparks today was that it will need 3-core 25mm² SWA rather than 2-core 16mm² SWA...
  10. F

    SWA or else?

    As a result of intended "change of use", I have had a new supply/meter installed in an existing barn conversion. There is pre-existing (certified) wiring and an existing CU on the opposite side of the barn to the new meter installation. The logical route between existing CU & new meter is a...

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