- Dec 5, 2018
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I heard long ago that daisy-chaining UPSes could generate equipment-destroying harmonics in the final output.
If one used a pure-sinewave UPS as the first device in the chain and blocked off all but one of its outlets (to prevent overloading), then plugged a second pure-sinewave UPS with a lower overload rating into the remaining outlet of the first UPS, could runtime duration be increased safely?
I'm wondering if the pure-sinewave output would prevent the second UPS from switching to batteries until the first UPS was drained.
This scenario doesn't contradict APC's FAQ on daisy-chaining UPSes (except for not being UL tested).
If one used a pure-sinewave UPS as the first device in the chain and blocked off all but one of its outlets (to prevent overloading), then plugged a second pure-sinewave UPS with a lower overload rating into the remaining outlet of the first UPS, could runtime duration be increased safely?
I'm wondering if the pure-sinewave output would prevent the second UPS from switching to batteries until the first UPS was drained.
This scenario doesn't contradict APC's FAQ on daisy-chaining UPSes (except for not being UL tested).
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