An Uninterruptible Power Supply (UPS) can provide emergency power to a load when the input power source fails, but it is not designed to supply power for an extended duration during an outage.
A UPS is indeed designed to provide temporary power to allow for proper shutdown or to bridge the gap until a generator takes over. It is not designed to supply power for extended periods during an outage, as its primary role is to provide immediate protection from input power interruptions, typically lasting from a few minutes to an hour.
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