Thanx for your reply but I have yet to find anyone selling a 2 pump system because the sewage pumps are so large (to be able to grind up "stuff") there wouldn't but much room anyway. In addition it hasn't been that the pump failed but the switch failed to rise high enough (blocked) thus failing...
My house is below grade thus all sewage wastes go through a sewage sump system.
I have a full suite in the basement.
If there is a power failure I and my tenants know NOT to flush/drain anything so that's not a concern.
As the system works with a float to turn on/off the power to the sump it...
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