>You need to find a electrician with out a cocane and hooker addiction.
In 2010 I added a nema 10-30 plug to the side of my dryer that was energized all the time.
Used it for air compressor, plasma cutter and welder.
Then in 2018 I briefly used it for EV charging, just don't run the dryer and charge at the same time.
You probably need a sub panel.
My 200 amp main panel was over loaded, breakers doubled wired and stuff.
I added the 8 circuit panel on the bottom fed it with 4 gauge wire and a 70 amp breaker, filled it up then added a 12 breaker 24 circuit panel on 2 gauge wire and a 125 amp breaker on the opposite outside wall.
Now there are 9 free spaces in that main.
My solar panel tie in breaker has to go in the main panel, can't go in the sub.
I have done a ton of electrical work here, probably thousands of dollars worth, only cost me a few hundred dollars in materials.