Carl, I have a 5 hp 220 air compressor and the contacts after many years the contacts fried. I looked long and hard for a pressure sw and at the time grangers had the largest, 3 hp. So instead of breaking both sides of the 220v, I jumped both sides of the switch together and wired only leg to the pressure switch. The other leg I wired directly to the motor. Many times, I've seen air conditioners where the motor contractor just breaks one leg and the other let is hot all the time. I'm sure there may be some NEC code that says you have to make and break both sides of 220v going to a well. Why do they wire pressure switches, 110v, where neutral and power are going to the switch? What does that accomplish? I figure by jumping both sets of contacts together, I came up with a bigger switch.
Option 2: Use pressure switch to pick up a motor contactor. Wire pump to motor contactor. I was going to do this if my fast fix didn't work. Well that was many years ago. Still using the 3 hp pressure sw on a 5 hp motor. Motor contactors used on 3 hp A/C are between $10-15. If you use a 24v contactor coil, you will also need a 24v transformer.
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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