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I have ~120ft of 1.25" sch40 pipe burried from the creek to the pond. In the past I used a 3/4hp shallow well pump to pump water to the pond and for watering lawn. The problem is that once in a great...

Thanks Jim,

>> ... search on isolation relay ...

Now I see. I do electronics for a living instead of electricity or heating/cooling. The terminology was the source of my confusion.

Gene

I have a geothermal system run off of a thermostat. Also I have a Alaska coal furnace run off of a thermostat. The two heating systems are fighting. I’m told that I can put a relay on the Y1 wire...