@QueenMumbleBee Lmao look up how a sump pump like that works. Just because both are plugged in doesnβt mean both are running. There are floats under the cover for each. When float rises because of water the pump turns on. The second pump has a float higher so it only goes on when 1st pump fails
@QueenMumbleBee They both have to be plugged in silly. How would the backup ever work if it was not?Under the covers are floats which are like switches. Your main pump float as at a certain level and the backup is at a higher level. The backup wonβt turn on until the water pushes that float up.