Solar energy home installations are an increasingly popular alternative to home supply or to have an alternative in the event of a grid failure. Therefore, if you have all the necessary equipment but are unsure of how to install them and start enjoying the energy of the sun, we will explain it to you step by step. In addition, this installation came out for around 600 euros, so it will also help you come up with ideas to minimize the cost of your solar system.
Materials and tools.
Here are the materials you will need for the installation:
- Solar panels.
- Charge controller.
- Battery charger.
- Mechanical handles.
- A plastic container.
- 2 AWG cable (6.5 millimeters).
- A deep cycle battery of at least 12 volts.
Also, make sure you have all the necessary tools. In this case, you will have enough with a drill, screwdriver, wrench, electrical tape and a cable cutter.
If everything is ready, you just need to get to work by following these steps:
1. Batteries ready.
To start this project, a good step is to check that the batteries are 100% charged and, if not, to recharge them so that they are at full capacity when you want to turn them on. While you are waiting for them to fully charge, you can start placing the solar panels and connecting them so that they are also ready to go.
2. Place the batteries in the containers.
Once the batteries are fully charged, it is time to place them in the containers. In this step, make sure all the positives are on one side and the negatives on the other. When you’re done, measure from terminal to terminal so you can bridge the gap.
3. Create the bridges for the connection.
To connect the batteries in parallel, you will need to make bridges with the 6.5 millimeter cable. At this point, it’s important to make sure the jumpers match your system. So, if you want to use a larger inverter, you will have to take this into account in the wiring. Typically, 6.5mm cables can be used for about 100 amps. With this, if your solar inverter is 1200 watts, you will need to use two cables per jumper.
Lay out the wiring and cut it to the size suitable for the batteries. Then place the handles and connect them to the terminals of the equipment.
4. Prepare the battery cover.
Once the batteries are ready, pierce the container cover to be able to extract the cables that will connect to the charge controller and the solar inverter. If you prefer, you can fit the controller in the same box, although leaving it out will allow you to control it more easily.
5. Connect the controller and the inverter.
Once the holes have been made, all you have to do is connect these devices to the batteries. Before doing this, make sure the controller is not yet connected to the panels and the inverter is turned off.
6. Tests and final touches.
Activate the inverter and connect the solar regulator to your panels. If everything is connected correctly, the installation should work without problems.
With all this, your installation will be ready to start functioning and make yours a more sustainable home in which, in addition, you can upgrade the equipment to increase the capacity of your system and be more and more independent of fossil fuels.
This installation, of which you can consult the original and detailed project on Instructables, it costs around 600 euros thanks to the reuse of materials (the container for the batteries, the charger and the charge controller), as well as the purchase via the web and the choice of second-hand solar panels, which resulted in a significant cost reduction.