Haggers Posted November 22, 2016 Share Posted November 22, 2016 Hi Want to purchase 2 of the following to run a grey water system and also an aquaponics system. do I need a charge controller and or battery to run this or can this be connected directly to solar panels? https://m.aliexpress.com/item/32282612900.html?aff_click_id=0afe97f6baf5468f8cd46792902a472b-1467220924649-07588-UneMJZVf&aff_platform=y Quote Link to comment Share on other sites More sharing options...
DownTime Posted November 25, 2016 Share Posted November 25, 2016 If you want the system to operate during the night and days when the weather is bad then you will need a charge regulator and battery, if not then you can connect a 12V panel directly to the pump. Quote Link to comment Share on other sites More sharing options...
DeepBass9 Posted November 25, 2016 Share Posted November 25, 2016 How many watts is that pump? If the solar panel is not producing enough, it may burn out the motor. With simple 12V stuff charge controllers are optional really, so a panel, cheap car battery and switching it on and off manually should do the trick. The battery will smooth out any mismatch between current drawn by the pump, and generated by the panel. I take it is not going to be running 24/7 bit rather only when needed? Quote Link to comment Share on other sites More sharing options...
DownTime Posted November 25, 2016 Share Posted November 25, 2016 From the specs that I could find of the pump has max 3 Amp current draw and it has a built in float switch, so it will operate depending on the water level. Quote Link to comment Share on other sites More sharing options...
DeepBass9 Posted November 25, 2016 Share Posted November 25, 2016 OK, so about 40W max. Quote Link to comment Share on other sites More sharing options...
SilverNodashi Posted November 28, 2016 Share Posted November 28, 2016 I got this one: http://www.takealot.com/submersible-bilge-pump-marinepet-12v-50w-for-boat-water-supply-d/PLID41263443 This was my first bilge pump as well and while it can empty the bathtub in about 30 minutes (up the window, probably about 1.6m, then 50m around the house into a "turtle" sprayer), I think I should have gotten a bigger one that can push more water, with more head. This one draws 5A @ 12V, so I ended up running it through a nice big (13A) transformer I had purely cause I don't want to haul a battery to the bathroom every time. My next pump will be 220V though. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.