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Daisy chaining power backup (UPS)

By pioneerx01
Jun 24, 2010
  1. I have a question about daisy chaining power backup (UPS). Let’s assume I have 2 new identical UPS. If I hook up one the wall, the second one into the first one, and the entire computer the second one (so wall socket > 1st UPS > 2nd UPS > computer) will I be facing any issues? Such as oscillation between UPS’s when power kicks out?

    I know that I will have a problem if 2nd UPS draws more power what 1st UPS can provide when power fails.

    Thanks
     
  2. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,714   +397

    I wouldn't think there would be an issue. I think the first UPS should output a cleaner signal than the wall does (sine wave vs blocky), which the 2nd UPS should be fine with.
     
  3. jobeard

    jobeard TS Ambassador Posts: 9,342   +622

    hmmm; puzzled. WHY? Is this an effort to double the keep alive time with less capacity UPS devices?
     
  4. captaincranky

    captaincranky TechSpot Addict Posts: 11,702   +1,886

    W not just split the load between the 2 units. True enough it won't be exact, but with the monitor and peripherals one one UPS, and just the desktop on another, it should help with extending the up time.

    This approach doesn't require as much mental anguish, I don't know if that's good or bad.
     
  5. hellokitty[hk]

    hellokitty[hk] Hello, nice to meet you! Posts: 3,435   +145

    I'd try it first.
     
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