The e cannot make best use of a 3phase 11kw wall box. That is a european style 3x 16a. You will therefor only be able to pull a maximum of 1x 16a in your e, making it a ~3.6kw wall box for the e.
The e can only use a single phase up to 32A/7.2kw
Either way, the design fault still exists on a 7kw wall box as well.