I too was a bit confused with the information provided. At the time when I placed my order, I was promised a free wallbox device, this was 11kW 3phase 16A wallbox from Schneider, partner of Mazda here in Slovakia. But I've already found an information about 1phase 6.6kw onboard charger. After little bit of digging, it appeared that even Mazda folks were given incorrect information about onboard charger of MX30 and passed this wrong specification to Schneider.
To me it didn't make any sense getting 3phase wallbox for MX-30, because car's charger would utilise only one phase (that's how i understand it), resulting in only 3.7kwh at 16 amps - that would mean around 8h40m long charge (I am using 32kw capacity available in the car) from 0-100% (not that this would happen too often if at all)
So I decided to press on Mazda and Schneider and they added another wallbox option. I ended up getting 1phase smart wallbox capable of 8-32A (Amperage can be set via ethernet or wifi (separate module) when connected to the wallbox) with a small charge extra for variant with T2 cable attached.
The limitation of the connection I can get here in the residential area is 25A max, 1 or 3 phase, but since it's more expensive to get 3phase connection, I've opted for 1 phase 25A connection, but did all the cabling in the garage as 3phase, futureproofing it for next electric car with 3 phase charger I guess
At 25A I can get maximum of 5.75kWh which is acceptable - means 0-100% in 5h30m long charge opposed to advertised 4h50m at full chargers capacity.
Now, I cannot say this is my expertise in the least so I got in touch with a Schneider representative I was dealing with during the process, and he confirmed the initially offered 3phase wallbox doesn't do any phase merging. So if this device Weljo mentioned works as advertised, it's not bad option I guess.
My guess is, Mazda initially planned 2 phase onboard charger, and changed it in the process, or it was only specified 2 phase for japanese market and 1 phase for european market. But I am only speculating, I guess we will never know where the confusion came from.
Anyway, here are the pictures of my EVSE opened and in full beauty (
link)
Weljo, do you mind sharing how much did this installation cost you in the end?
My total costs were somewhere in the region of 750 euros, roughly 250 extra for the variant with a cable, 300 for the additional equipment like all kinds of voltage protection thingies I don't understand, and 200 euros for certification. Plus extra for the certified eletrician and the work done (around 250 euros). It was roughly what I expected extra costs of getting started with EV would be.
Btw, basic tariff here is 19cents for 1kWh, best option is 11-13cents but only makes sense if I was charging a lot (there is a higher monthly base fee)
Different electric company offers special EV tariffs, with only 9cents for a kwh, but this is not available yet where I live. This price is only for smart wallboxes (allows electric company to throttle or turn off the wallbox if network needs it.