Hi, Was wondering how dual input power strips work. Ive seen them in data center racks, they have 2 mains power inputs wired to separate mains circuits. if one breaker trips then the strip still receives power from the other circuit. Do these strips have both power circuits wired to all the outputs in parallel? or is there some logic involved to switch from one circuit to another when it senses failure on a mains circuit? Ive also noticed on some of the higher end computer hardware ive worked on over the years where the power supply has 2 or in some cases 3 separate mains power inputs. I'm curious to know if these are all just wired in parallel. Is it safe to have 2 or even 3 separate mains circuits connected together in parallel in this sort of arrangement? if so would the load be distributed evenly across all circuits? Thanks in Advance.