A roof top solar panel is a modern device capable of generating green and renewable energy sources, often used for large-scale factories or constructions in remote and isolated areas. In this article, we will guide you through the process of installing rooftop solar panels.
Checklist to prepare before installing roof top solar panels for the most efficient result
1. Cost estimation
At the first step, we need to estimate the costs associated with installation for the type and size of roof top solar panel you have chosen. Depending on the country, the host government will have different subsidy policies to encourage the installation of solar panels and the use of renewable energy sources. For example, subsidies provided by the US Government will be different from those provided in India or China.
2. Equipment preparation
These are the equipment that you will need to install solar panels:
- Solar Panels
- Charge Controller
- Power Inverter
3. Determining the size of the system
In this 3rd step, we will determine the size of the roof top solar panel system. We should add up the capacity of all electrical appliances and calculate how many hours we will use them per day.
If you fully follow the above preparation steps, you will fully understand the power requirements, the size of the solar panel and the required wire size. You ensure that the proper wire size will prevent the wire from overheating and ensure maximum energy is transferred.
4 basic steps of roof top solar panel installation that you can easily follow
The installation of roof top solar panels will include the following 4 steps:
Step 1: Mount Installation
Step 2: Install the Solar Panels and Electrical Wiring
Step 3: Connect the System (Solar Inverter, Solar Battery, Grid)
Step 4: Start Solar Inverter
First step of Roof top solar installation: Mount Installation
The first is to place the brackets for the solar panels. It can be a roof mount or a flat-mount depending on your usage. This device provides support and stability. Here’s how to install PV panels (monocrystalline or polycrystalline)
For countries like us, we should install the panel in the North for countries in the Southern Hemisphere. The structure of installing roof top solar panels must be slightly tilted from 18 to 36 degrees. To increase conversion efficiency, finally you can use a solar tracker.
2. Second step of Roof top solar installation: Panel installation and electrical wiring
In step 2, you will fix the solar panels to the mounting brackets provided in step 1. You should secure the whole system properly so that it is stable in the long run. Then all we need to do is wire it up. It is recommended to use universal connectors like MC4 during wiring because they can connect well with all types of roof-top solar panels. These boards can be electrically connected according to the following instructions:
- Serial connection: The positive (+) wire of one PV module is connected to the other module’s negative (-) wire. The type of wire that can increase the voltage matches the battery bank.
- Parallel connection: that connection is Yang (+) to Yang (+) and Yin (-) to Yin (-) . The wiring voltage of each board will remain constant
- 3. Third step of Rooftop solar installation: Connect the System (Solar Inverter, Solar Battery, Grid)
Next, we will proceed to connect the panel to the rooftop solar inverter. The wire from the solar panel will connect to the positive pole of the inverter; The negative wire and the negative bar will connect together. Finally, the inverter with the input of the solar cell and the grid connect together to generate electricity.
Then you connect the solar inverter to the solar battery. The pole of the battery connect to the pole of the inverter and the negative pole to the negative pole.
The final stage in this step will be to connect the inverter to the grid. It would help if you used a plug to connect to the main power switchboard and an output wire to connect to the power board.
4. The last step of Rooftop solar installation: Start Solar Inverter
After completing all the above steps, we will start turning on the main inverter switch of the house. Most inverters have a digital display to show the statistics of solar energy generation and usage.
Above is the process of installing a roof top solar battery system. So, hope it has helped you in your plans to install and use solar energy.