I want to run 1 HP, 220 v, single phase water pump on solar panels without using any batteries. what do I need to do so amp; how do I wire it?
Hey R, if you have an existing pump you are trying to run that is designed for 220 AC, I would suggest going with the battery and inverter, but either way it will take about 1200 watts of solar. With no battery, the panels need to provide for the surge power to start up the pump, so now you're looking at at least 2000 watts of panel. Then as Caoedhen pointed out, one cloud goes by, it shuts down then starts again, this is not good for pump longevity, so you'll be spending more on replacement parts too. If you don't have the pump yet, and you want to go solar, I would use a slow DC pump, they make them strictly for solar panel operation, no batteries or special controllers. Windy Dankoff probably is the expert, do a google search for DC slow pumps, or look for Windy's website. Then you can get by with a lot less panel, and a better pump for them, plus no batteries. Take care, Rudydoo
Does a great job of increasing global warming as well, as the waste energy becomes what = HEAT!
Several huge panels, into an inverter than can provide the required amperage. You realize the pump will only run when the panels are receiving light, don't you? While you may not wish to use batteries, without the batteries the system will only work when and if it gets enough sun to actually provide the required power. It may actually burn out the system or even the motor trying to run on less power than it needs.
