Understanding Dual Input Power Strips: How They Work and Their Safety Features

[dr_boom]

Hi,

Was wondering how dual input power strips work. I've 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 I've 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.

 

[mdjensen22]

To be honest, I am not familiar with what you are describing, but it could be that they have two separate mains inputs to allow for more than the standard 15A of current (North America).

Can you find any links to the equipment you are referring to? There might be datasheets or installation instructions that could help clarify the function...