On 07/02/2021 10:59, Theo wrote:
John J wrote:
You could go to a "proper" supplier but are you really planning to install
a three phase circuit in a domestic property or just shooting the breeze?

The train of thought was that, as part of current works, I'm thinking of
putting in a circuit for EV charging. I don't have an EV, nor do I have a
space on the CU to fit it, but working on the 'materials are cheap, labour
is expensive' principle (especially when you've made good on top of
everything) it's only the cost of the cable to do it now. The CU
replacement is likely to happen in the medium term (which would include
wiring in this cable), which just leaves the (relatively limited) external
wiring for the EVSE.

And then, scope creep being what it is, I was pondering what the uplift to
three phase would be. I don't have a three phase supply, but it's 'just'
another conductor to go from 6mm2 T&E to 6mm2 three core and earth. And
then we'd be all set for a three phase EV charger - for example, charging
multiple EVs at once. That would mean upgrading the supply, but longer term
we might have to move it anyway and the uplift in costs to the DNO from
single to three phase isn't *that* much.

But I couldn't find regular 'three core and earth' at suitable gauge, which
is why I was wondering...

That's simply because 3+e is made for two-way lighting