Theft deterrent mount for Opel Ampera charging cable with meter

I wanted to make a safe station to connect the charging cable of my Ampera to the mains socket outside my home. The safety goal was: "cable not easily removable without crowbar."
I also wanted some protection from elements (it is mounted outside, but under the roof).
I added a cheap energy meter to get an overview of energy used and to be able to check charger function. For standard EU in-wall receptacles with earth contact (schuko).
Please be safe and install only if you have the necessary knowledge about safety of electrical installations.
It should also work with other charging cables of a similar design (max. 35mm thick handle).