I will first say I am very familiar with wells, pumps, and electric, but I have never tried this little tangent. We are doing a quick and cheap cabin. Minimal is the game here to get inspectors to fly it. I am looking to enter the dwelling with a 24V charge controller and PV, and have a small lead acid battery back for storage and inrush currents. I am looking to run a small 3" DC pump either on 24V or we could have to go to 48V if I cannot find joy in this design.
The issue is the pump will have a 300ft distance, including the pump drop. I have determined that we will need about 100ft of head. The actual flowrate is really not a big deal because it will be coupled to a 30gal pressure tank and estimated water need is about 10-20gpd. I'd be happy with 1gpm but the key is getting enough pressure. Plumbing code requires a min of 15psi water pressure and I am accounting for that with the 100ft of head requirement.
The issue is as one could guess, we have some decent voltage drop going to that pump! I am also not yet sure if the pump will really serve the need with the voltage drop and pushing a small pump near max lift. The batteries will certainly be able to deliver the amps but that will get pinched down with a smallish wire set. I am really trying to get this done on 12ga wire! Everything is stupid expensive right now.
I see lots of you guys running pump inverters and such but I am just looking to control the pump with a complete DC system and a pressure switch. Or other very simple approach you guys may know of.
The issue is the pump will have a 300ft distance, including the pump drop. I have determined that we will need about 100ft of head. The actual flowrate is really not a big deal because it will be coupled to a 30gal pressure tank and estimated water need is about 10-20gpd. I'd be happy with 1gpm but the key is getting enough pressure. Plumbing code requires a min of 15psi water pressure and I am accounting for that with the 100ft of head requirement.
The issue is as one could guess, we have some decent voltage drop going to that pump! I am also not yet sure if the pump will really serve the need with the voltage drop and pushing a small pump near max lift. The batteries will certainly be able to deliver the amps but that will get pinched down with a smallish wire set. I am really trying to get this done on 12ga wire! Everything is stupid expensive right now.
I see lots of you guys running pump inverters and such but I am just looking to control the pump with a complete DC system and a pressure switch. Or other very simple approach you guys may know of.