I would have paid a bit more for #6 copper. You wired a NEMA 14-50 which is usually expected to be on a 50A circuit for 40A continuous duty. And you are placing it where an RV could access. Upping the capacity a bit future-proofs the installation.It's a very simple charging system. We bought this enclosed 50A receptacle from Amazon (30A-50A is the same receptacle) connected to a 40A breaker. The Model 3 already come with a NEMA-14-50P adapter for its charging cable so that's all we required. Wired a #8 3 conductors (red, black and white + ground) wire from the breaker box to the receptacle. We were already renovating/repainting so make holes in the drywall at the junction of the ceiling and the wall to pass the wire wasn't an issue. Distance was 85' so #8 wire was the recommended size for that distance.
I have the same configuration as SylvainG because 30 years ago the #6 with 40 amp breaker was ran to my external garage. My EVSE is rated for up to 40 amps with Tesla in mind. My 6.6 amp Leaf charger draw maxs out at 26 amp draw. Using my current set up what would a new Tesla try to draw? The EVSE seller said he tested it on Tesla and it worked but the Tesla adapter did get warm. I could have went with the cheaper 30 amp but my geek streak liked it's #8 wire size.I would have paid a bit more for #6 copper. You wired a NEMA 14-50 which is usually expected to be on a 50A circuit for 40A continuous duty. And you are placing it where an RV could access. Upping the capacity a bit future-proofs the installation.
Tesla does not use neutral, but you have to have it to be code compliant with the 14-50. The RV requires neutral to be able to split the 240 into two 120 circuits.
The difference in US prices and many places in the world is simply due to taxes.Worth watching, for a few reasons.....
To date, other than the sandbox and sometime S. American dictatorships, USA prices are often the lowest in the World.
Siemens is not known for getting involved in weak Business Cases.
(Create Hydrogen from Wind.... too bad you couldn't do that with PV panels..... ....).
As this is a premium fuel, let's compare to Premium gasoline. Today, Premium is $1.80/L CAD in Vancouver BC.
Time value of Money, yadayadayada...... estimating $2.00/L USD five years out..... it's depressingly sad to type, but, that's not looking so bad..... even w/o considering Covid hyper-inflation....
This one may have legs....