[gardenland1]

My 7.5 hp, 50 gal, 230 voit pump seam to burn up the pressure switches. Is there a heavy duty on

[hkstroud]

230 voit pump seam to burn up the pressure switches

Pressure switches would be rated by amperage draw.
A 7.5 hp pump is a big pump. What's the amperage draw? Another factor to consider is how often the pump cycles on and off. Constant cycling would burn up points of switch.

What size tank?

[mygirlsdad77]

7 1/2 hp pump with only a 50 gal pressure tank? 7 1/2 hp pump is a huge pump. What does this pump supply?

[hkstroud]

Lee,

Guess I am reading a 50 gal flow. I have a 300 ft well, don't know the pump size but think it is in the 5 hp range. It had a 50 gal flow 30 years ago when I put it down. Now probably only 30 gal flow, but it is on a 1800 gallon tank.

[mygirlsdad77]

Oops. I think your probably correct here. Just assumed tank instead of flow. Good catch. Still curious about the 7 1/2 hp. That is a industrial sized pump. Ive seen farms that water thousands of cattle, supply the home and all farm buildings that only use (the biggest Ive seen in my area) 2 hp. Even that requires a special control box, but a standard pressure switch works just fine. Not sure about the pressure switch requirements on a pump motor that big.