I really dont want to play with the outlet on the wall. That is the reason I asked if the below method will work
https://bitcointalk.org/index.php?topic=2769696.msg28656258#msg28656258Someone replied it should work but i have to be careful with connecing 4-prong dryer cord to 3-prong connector. And i asked the below on that
Is there any chance you could tell what 3 to connect from the dryer wore to what on the connector and which one to leave alone on the dryer wire?
I tried to google but not many results since this is a rare situation I guess. Most of it was about how to change the dyer from 3 prong to 4 prong

This stuff is dangerous, if you don't know what you're doing you should hire an electrician. You can't take your bitcoins with you after you electrocute yourself.
I explain 240v circuits in the USA here:
https://bitcointalk.org/index.php?topic=2772135.msg28578662#msg28578662Note: I am not an electrician. I know enough to know when I don't know something (could probably pass a journeyman test). Which is only slightly better than knowing enough to be dangerous.
Shouldnt that work without the need for electrician? I am planning to run only 1 miner as of now