Keith Jennings
: Ive got a sump pump – and after losing power during a downpour, I now have a batter backup to the sump! : However, my sump is fairly small, and Im concerned about the two tether style floats (1 for the sump, 1 for the battery backup) will bind up and stop the backup from working. : Any one know of an alternative to the tether style float I can use?Sure- at least for the battery-backup, since Im not sure of the voltage and ampere ratings of the switch: look to the boating industry. (After all, the battery powered backup is nothing more than a boat bilge pump); there is a sensor available that is waterproof and rather than a float, senses the rising water level by detecting continuity between a pair of contacts,causing the switch to close and the pump to turn on. If the switch will handle your primary voltage, you could get two of them (one for the main pump and one for the backup), epoxy them to a piece of pipe or plate that wont float with the backup a little higher than the primary, and wire them into the system in place of the floats. They do work, and they cant jam up.
