I loved Joe Bidwell's article in the July issue of Nuts & Volts regarding the water pump protection system! It opened my eyes to control devices that I never knew existed. I have a few questions I am hoping Joe would help me with. There is a box called the "pump control" that is mentioned several times. Why is it necessary and what is its function? In the article, Joe says the pump current can be checked at the pump control box while the pump is running. How do you do that? I would like to get Joe's opinion. Instead of purchasing separate units for the voltage relay, time-out relay, and time-delay relay, what would you think of building a single device from scratch using a PIC microcontroller driving a single relay? Other than design/construction time savings, are there any advantages to spending the dollars to purchase the commercially manufactured units?
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