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All true I'm sure, but this would assume that I would fully empty the car's battery each day and thus need a fully charge every night.  In reality I rarely take the car even down to 90% on an average day.  Only now and then will I take it down to 50% and once in a blue baboon down close to...

SP chargers seem to come in 3KW & 7KW, then TP come in 22KW and higher.  Mine will be 7KW SP so 32 amps.  Furthermore it draws them constantly for four hours at a time, hence whilst my sparky was happy with 10mm (and so am I now) I was considering overrating it. Sparky has now postponed due...

Already sorted, many thanks.

I said that I am not concerned about them, not that they are not important.

Those aren't areas I'm concerned about.

Pass, I'm honestly not sure about that.  That'll be for the installer anyway.  I wouldn't have expected a surge but who can tell?  If so I may need a type C on the house MCB supplying the garage CU.  Will wait and see what the installer says.

I do all my own electrical work and then get the sparky in to connect and sign off, at which point it's a bit late if he wants to change it!  He said he's happy with 10mm bit given that the run through the house is enclosed I was pondering going 16mm.  All solved now anyway.

The plan has never varied.  My sparky is happy with 10mm, I was considering over rating.

Yup, but far more of a pita to thread through all those joists.  Also I have 10mm T&E lying about so need to buy less SWA. I'm laying the cable run, my sparky will then fit the garage CU and link up to the house CU and sign off both.  Installer then connects up charger on 32a circuit from...

Using a separate earth and the 10mm third conductor in the SWA.

They didn't state how they'll class it, just that they're happy running 50A over 10mm in those circumstances.  As I'm a mere punter I suspect they don't want to confuse me with such things.  ;) Pass - that's over to the installer.  I know they're happy with me using a 10mm earth from the...

Cracking, thanks mate.  I've now managed to get the installation company to commit to that too, so I know I'm good to crack on with 10mm on a 50A MCB. Thanks all!

All I'm looking for is anyone who knows which reference case should be used for cable mounted between holed joists in an uninsulated void between ceiling and floor.  From the descriptions in the literature it could be argued to fall into either B, C or E.  I'd argue B but interested in opinions!

It's fine on both reference methods b and c, one of which must be the case here. All I'm looking for is anyone who knows which reference case should be used for cable mounted between holed joists in an uninsulated void between ceiling and floor.  From the descriptions in the literature it could...

Yup, VD fine at 10mm.

They are not prepared to do the cable run and seem non-plussed over which reference method this represents.

Oh I dunno... We could just call it underfloor heating?  ;)

Very long house, garage is also at the bottom of the garden so it's half T&E under floor boards and half SWA clipped to exterior brick wall.  I'm not a sparky myself but I'm laying the cable run before the charger installation company sends their sparky to do the rest.

50A over 40 meters, single phase.

Am running cable to my garage to provide power for a car charger.  The run will be threaded through holes drilled in the center of the joists under the upstairs floor such that the cable is suspended in the air between plasterboard and floorboards.  There is no insulation in there. Would this...