I know nobody wants this recommendation, but you might try to get ahold of Minersource. The last email I got from Carson (a little over a week ago) he asked if I wanted to buy some PDUs. I don't know what cabling, but he said "20A single phase 220 PDUs" so it's possible they'd fit your requirements.
That sounds like something I can use on my 20A circuits, but I am scared!!!!
I will try to contact them through their website or if you want to ask if you can give me their email that is welcome too.
Thanks.
EDIT: NVM they have no website anymore lol, please ask. Thanks again.