I suppose that's fair enough - but I think I would have used at least 20A (just in case my crystal ball was faulty) - and probably 32A if the installation method allowed!
Hmmm. Particularly given the 16A design current, I'm surprised there was a need for 4mm² to satisfythe reg's VD requirements. Even if the submain were also in 2.5mm² cable (unlikely!), with 2.5mm ² cable, by my calculations, you'd be able yo have about 40 metres total (submain + final) length and still be within the regs' 5% VD limit. How big is this cottage?!
Not large but stone walls and wattle and daub walls ( Grade II listed ) have made cable runs "interesting".
I certainly have no problem with that. I suspect that many of us here take the same attitude (with respect to those matters we we regard as more 'important').
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