How To Connect A Solar Panel To A Water Pump

Connect 7 solar panels in series to form one string.

How to connect a solar panel to a water pump.

It depends on the pump. Connect the output of the 3 positive cb s together. Place 6 circuit breakers cb in a pvc box. There are dc solar pumps designed to work directly with a solar panel.

In a sale i picked up a 115w panel with 37v output and plan to connect this to a 12v dc 50w pump via a voltage regulator. Most of the cheap solar pumps available simply wait until the solar panel output is sufficient to turn on then run. You should have about 750 watts of panels. They have a controller circuit available that optimises solar output for pumps etc.

Wire to water efficiency is the commonly used metric that determines the overall efficiency of a solar water pump as the ratio between the hydraulic energy that comes out of the pipe and the energy coming over the electrical wires through solar panels. 3 such strings will be thus formed. An even better solution is to also use a linear current booster lcb between the solar panel and the solar pump. An lcb decreases the voltage and increases the current output helping to handle the high current surge a pump needs to get started.

Before connecting the solar array to the solar pump system controller we must connect a circuit breaker cb between them. Connect the negative wire from each string to one end of a separate cb input of cb 4. Connect the panels in series or parallel to match the pump voltage. It s a great.

Check the nominal voltage that the pump runs at. The voltage regulator came from e bay and is designed for golf cart use. Get panels which have an open circuit voltage about 1 5 times that or if it is listed a maxim power point voltage similar to the pump. Connect the positive wire from each string to one end of a separate cb input of cb 3.

I am looking at a similar challenge a very simple solar powered pump that only operates when the sun is shining.