Hey everyone. Wanted to reach out to see what you guys think about using 277v for mining. I currently am using a step-down transformer to 240v, but I wanted to build out a little section for testing some machines at 277v. I know HP makes some power supplies for 277v and I am going to give those a shot with some breakout boards, but I wanted to see if anyone has had any success with other power supplies.

IBM 2880 Bladecenter
I have seen a discussion from 2015 here that talks about different power supplies that run at 277v and on that list is the IBM 2880. Link: https://bitcointalk.org/index.php?topic=1206101.0

I bought a couple of them and tried it on 277v for about an hour and it ran great. I was curious if anyone has tried it long term. Also, why does this power supply work for 277v compared to other power supplies rated for 240v?

Bitmain APW3++ or Avalonminer Sorcerer PSU
Has anyone tried these power supplies with 277v? The sorcerer says it is rated for up to 264v so I am curious if either of these will run at 277v long term. Anyone had any success?

Anyone know of other PSU's that work at 277v safely?