Grundfos SQFlex with 3000' to float switch [RE-wrenches]

[erics]

I have a customer that wants to use a Grundfos 6 SQF-2 to pump from one
storage tank about 3000' and up 250' to another storage tank.
My question is about the distance and a float switch conductor.
Grundfos' CU200 float controller can only have a max. of 330' between
float to controller.  Anyone done this for 3000'?  Can I increase wire
size?
Or can I make up some kind of DC powered relay.  The pump would be
powered by 3 Sharp 165's in series - about 495 watts.  Any
suggestions?    We'd rather not trench from a neighboring house and use
AC.
Thanks,
Eric Stromberger
Village Solar and Electric
Mendocino, Ca

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