OFF GRID Rainwater Harvesting System – Part 4 – solar powered pump

Mount the Board in the Mini Pump House

installing the solar board in the off grid pump house

Then I can mount this on the back wall of the box and connect the battery terminals. I designed this rainwater harvesting system with room for expansion.

attaching board to wall of mini off grid pump house

The 12V pump I have won’t draw a lot of amps so for now a single 100 watt solar panel will work for this system. The roof of the pavilion is sloped to the south and the pump will only be used in the summer months when there’s a lot of sun.

The Solar Panel

installing roof mounting brackets to the solar panel

The kit comes with roof mounting brackets.

installing roof mounting brackets to the solar panel

And they are attached to the panel with nuts and bolts.

taping cardboard to protect and shield the solar panel

To protect the panel while I’m handling it I’ll cut some cardboard and tape it to the face. And this will also prevent any shorts or sparks from the wires if I accidentally cross them. I’m not sure if I needed to do this. But, it can’t hurt.

Mount the Solar Panel

setting the solar panel on the pavilion roof

On the roof of the pavilion I’ll set the panel in place and check that the feet of the brackets sit flat between the ribs.

setting the solar panel on the pavilion roof

Looks like it just fits.

setting the solar panel on the pavilion roof

I cut a strip of Eternabond tape and stick it to the roof under the brackets. This should make a water tight seal. And the roofing screws have a rubber washer too.

drilling holes in roof for solar panel controller wires

Now I can drill two holes in the roof for the panel wires.

feeding wires for solar panel controller
silicone used to seal wires where they penetrate the roof

These wires will run through a water tight housing that I’ll silicone to the roof.

silicone used to seal wires where they penetrate the roof

I’ll tape that in place while the silicone cures. Then connect these wires to the panel and tuck the connectors up underneath.

Leave a Comment

Your email address will not be published. Required fields are marked *

Shopping Cart
Scroll to Top