Can you switch-on an UPS when the Main Supply is Off?
Please anyone give me the correct answer
Yes, you can turn on a UPS when the main power is turned off, although this depends on the type of UPS & the battery condition:
Normally turns off until the mains fails.
Can turn on from batteries, only if:
Yes, you can use a UPS without a mains supply if it enables cold start & the battery is in good condition.
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