Just did mine and that cost me around £100, with:
- 32 amp blue wall plug (32A Interlocked Socket and 32 Amp Plug 3 Pin 2PE 240v Blue Wall Mount IP44 Switched
32A Interlocked Socket and 32 Amp Plug 3 Pin 2PE 240v Blue Wall Mount IP44 Switched : Amazon.co.uk: DIY & Tools).
- Tesla 32amp blue adapter for the mobile charger (
Blue Adapter - 16A/32A)
-10mm Twin and Earth Electrical cable (can take up to 60amp) between the blue wall plug and the fusebox.
- added another 40 amp fuse in the fusebox (from screwfix for £5)
- Bear in mind that I already have an outside fuse box installed for my patio with a 63amp RDC .
Test it yesterday and I have been able to charge the M3 at 27 to 29 miles per hour