Skip to content

How to connect solar panels with an inverter

Know how to connect solar panels to an inverter , this step is very important if you install a solar system since the inverter is in charge of transforming the direct current DC into alternating current AC than the current used in homes.

In the following image gallery you can find more information about solar panels 

How to connect solar panels with an inverter

Knowing how connecting solar panels with an inverter is crucial to get AC power,  solar panels and inverter  for home use have become a necessity rather than a luxury with frequent power outages all over Nigeria.

Now people want to use all appliances, including air conditioners, televisions, and refrigerators.

Solar panels and inverters have played a huge role for those who want an uninterrupted power supply and at some point have even been referred to as the ”  21st century alternative energy source in Nigeria  ” by This Day Live.

Due to its quiet and pollution-free capabilities, an inverter is something every home should have.

How to install solar panels and inverters yourself

We have categorized the installation process into four different steps:

  1. Solar panel installation:

Here you may require some level of help from a roofer to allow the solar panel to be firmly nailed or screwed to your roof.

To get the most out of the sun’s rays, place it where it can get direct sunlight.

When the solar panel is in direct sunlight it should give you at least 26v if you use your multimeter or voltmeter to measure its voltage.

 

2.  Connecting your charge controller:

The current we get from the solar panels will not stay constant throughout the day, so you should not connect the solar PV modules directly to charge the battery, as it will damage the battery over time.

Therefore, you need a device called a Solar Charge Controller to control the current we receive from the solar panels.

The charge controller has a built-in PWM (Pulse Width Modulation) charger to charge the lead-acid battery in three stages, ensuring long battery life.

The charge controller has three connection points for Solar Panel(s), Battery and Direct Current (DC). If you look at the back of the solar panel    (the one we mounted in the first step)  , you will see two cables, which are positive (+) and negative (-).

Connect them to the place where  the solar panel is indicated on the charge controller  , connect positive to positive, negative to negative.

3.  Connect the battery to the inverter:

On the back of your inverter you will see where the 12V DC input is indicated, connect the positive (+) terminal of the battery to the positive (+) terminal of the inverter and the negative (-) terminal of the battery to the negative (-) inverter terminal.

Please, the inverter must remain OFF at the point.

4.  Battery connection to charge controller:

As indicated in the third step (above), the charge controller has positive (+) and negative (-) terminals for the battery. Connect positive (+) from charge controller to battery positive and negative (-) from charge controller to battery negative.

Make sure all connections are tight.

5.  Charging your house:

CAUTION: 
Have an electrician separate the intended load for the inverter so that the inverter is not stretched or damaged when the house is powered.

me. Turn on the inverter, use your voltmeter to check the inverter output voltage, which should be 230V.

ii. Turn inverter  OFF  .

iii. Turn  OFF  all your appliances

IV. Connect the output of the inverter to the electrical network of your home.

V. Turn  ON  your inverter.

saw. Turn on your appliances, starting with an appliance that draws less voltage.

If you already have an inverter already installed in your home 

If you have a normal power inverter already installed in your home circuit and you want to:

A. Make it Hybrid (Solar + Electric Supply)

B. Make it solar powered only,

then these articles will be useful to you.

Requirements?

  1. A solar panel or (combination of solar panels)
  2. A solar charge controller (PWM type in this article)
  3. An existing inverter connected to the battery and home supply.
  4. One load (AC)
  5. Wire connection

Step 1 –

Take a solar panel and connect two wires from the positive and negative terminal present on the back.

Step 2 –

Connect the positive and negative cables to the respective input terminals of the charge controller.

Step 3 –

Connect the DC output cables of the charge controller to the respective terminals of the battery. (This ground is connected to the inverter)

If you want to go hybrid i.e. you have an existing power supply then your power supply needs to be connected to your inverter. yes

Whenever there is sunlight, the battery will be charged from the solar and electrical power source.

If you want to do it only with solar energy, that is, you do not have electricity supply or do not want to use it. Your circuit will appear as shown in the diagram.

The battery will be charged by solar energy and this battery will supply DC voltage to the inverter which will reverse it to run AC loads continuously.

In this article, we have discussed a Simple Single Solar Panel and Single Battery Circuit that is suitable for running loads up to 300 watts.

For heavy loads, a combination of solar panels and battery combination can be used to achieve higher power output. This topic will be discussed in subsequent articles.

Thank you for reading.

In case of questions, queries or suggestions, please leave your comments below.