Finally got my new “FREE” UPS.. Friend of mine donated a lightly used PERFECT condition HP 3000KV ups. Batteries are in perfect health and unit is perfect. I lopped off the 110V 30A twist lock plug and intalled a 110V 15amp plug and its all working perfectly.
YES you can change plugs, i’m only puling 505watts from this setup, not even close to what the ups can pull, if you arn’t pulling alot of current the you don’t need to worry about the 30amp plug, if you were pulling alot of power then you would need the 30amp twist lock and dedicated power run for the UPS.