Here's the modified HPC attached to my 100A banded cable (50 feet long) and my modified Tesla plug (removed from the HPC and outfitted with camlock connectors).
In this case there's a breaker located at the HPC, which was only there because we were testing it for the first time and needed a breaker for safety (quick cutout). Normally this breaker is only needed at the panel.
This three-cable banded brings the 220VAC up to 50 feet from the source, in this case, a breaker panel in my shop where I installed a 100 amp breaker using some more cables and connectors I'll show you later. I also have a 50 foot 100A banded cable with four conductors to go between the Tesla connector and the HPC. That way, the HPC can be inside, out of the weather, and up to 50 feet from the Roadster, and the HPC can be up to 50 feet from the breaker panel.