I am attempting to wire several servers up to 240v. Some servers have PSU's which are capable of adjusting to 240v from 120v, others are strictly 240v no questions asked. According to the manufacture's website I need to use 240v single phase or 240v 3 phase, and 3 Phase is not an option where I live. My question is, living inside the United States with 2 120v Hot Wires in a residential home, how do I combine those to a single 240v hot wire with neutral and ground. It doesn't say whether I can use 2 hot wires to achieve 240 or not, and I don't want to nuke thousands of dollars in equipment. I plan to install a UPS as well which might be an answer to the question. I can provide specs on the servers and PSU's as needed. Thank you!