I will look over it.
It has some errors.
Gfci is not that important.
Do you own an empty container twenty feet size?
Do you have 1 phase 240
Do you have 3 phase 440
Are you usa based
Are you in a hot state?
You can use 5e cables like these on ebay
https://www.ebay.com/itm/167426372173Note That is my eBay listing I have lots of cables and sizes.
A lot depends on where you put the container and how hot the area is.
https://www.wayfair.com/Alphamarts--12-X-30-Ft-Heavy-Duty-Carport-With-Galvanized-Steel-Roof-GA2311230-L623-K~APHC3902.html?put a 20 foot container under the car port
https://www.zoro.com/zoro-select-84-in-x-135-ft-x-1-in-polyester-air-filter-roll-merv-7-bluewhite-formerly-air-handler-2gge5/i/G7574953/Put this along the car port. It ends up on the container input wall
Then cut out a side of the 20 foot container.
Leave a foot to 18 inches of the container
Low
Leave a foot to 18 inches of the containers high.
Leave two supports in that big cut out
<20>
______________
| | | |
—————————
So you are looking at the cut side of the 20 footer
You can avoid intake fans and the container is protected from leaks with the carport.
But a lot depends on your location.
Oh 400 amp 1 phase is
400 x 240=96,000 watts de rate to 77000 watts
That is 23- 25 s21s