I have two separate 12/2 Romex lines I ran in my house to a dual 20-Amp outlet (top outlet on one line, bottom outlet on the other). I used this to power a small server rack. I am changing my setup to go to 220v and power a PDU with an L6-30R, and run everything off of the PDU.
Is there a way I can utilize my existing wiring to do so safely, and if so; exactly how do you recommend I do this?
I was thinking I could get a double pole 220v breaker and run the hot wire from each of the two existing Romexes to the outlet. This seems safe / reasonable, but the whole idea seems weird and I want to make sure there isn’t anything I am missing.