Thank you all for the info. Very valuable for noobs like myself.
Just to make sure I understand it correctly; I run dedicated 30 amp 240v w/10 awg line with l6 30p outlet. I buy pdu rated 30 amp with l6 30p (24 de rated ) like the APC 9571A and I am good for 5k watt right?
My circuit breaker has 2 spaces empty next to each other but I am not sure what is the total power coming in to the house.
Also, standard ATX psu in the US is rated to use 240v ? I know that all my three rigs are hooked to 120v outlets right now.
5.76kw, and two spaces next to each other usually means you can get 240v. Some GE panels have 2 spaces before it changes legs. If you install the breaker and it shows ~240v between poles you are good to go, If it shows 0v then rearrange the breakers to move it down one space.
The power supply may have a switch on the back to switch it from 120v to 240v. If it doesn't have a switch look at the label and check that the voltage range goes to 240v and hook it up.