I need to know what kind of inverter I need for a solar system consisting of four 305w solar panel, connected in cerise.

Yes, it is possible to connect an FBI2000W inverter to solar panels. In fact, inverters are an important component of solar power systems, as they convert the direct current (DC) electricity generated by solar panels into alternating current (AC) electricity that can be used to power homes and businesses.
To connect the FBI2000W inverter to solar panels, you will need to:

1. Install the solar panels on your roof or other suitable location and connect them in a series or parallel configuration to achieve the desired voltage and current output.
2. Install a charge controller between the solar panels and the inverter to regulate the flow of electricity and prevent overcharging of the battery bank.
3. Connect the output of the charge controller to the input of the FBI2000W inverter using appropriate wiring and connectors.
4. Connect the output of the inverter to your home or business electrical system, following all relevant electrical codes and safety guidelines.

It is important to note that connecting solar panels to an inverter can be a complex process that requires specialized knowledge and expertise. It is recommended that you consult with a professional installer or electrician who can help ensure that your system is properly designed, installed, and configured for optimal performance and safety.

That appears to be for a solar energy system, you should have solar panels on the house if you have that. If the unit is small and has an antenna then it monitors your solar power and reports what the inverter on the outside of the house is producing to whomever is your solar provider. IT requires an internet connection to do this. http://growatt-america.com/

I like to ask, is the voltage from the solar panel messure with some load connected or is open circuit, normally solar panels produce high voltage than the working system, the reasson for that is to have Amperes in of to charge the batery, these is related to the size and power generated by the panel.
No need a resistor or in any case use a voltage regulator to prevent over charge.

It depends on many factors. What is your geographical location, in very hot climate generally poly panels do a little better and you need to match your charge controllers input with the solar panels. sometimes for small systems big panels with higher current ratings do not do well.

Hello Phil, what is the size of your solar panel? This pump draws 17 watts so, your panel must be 17 watts or greater. Remember a solar panel only puts out full power when in direct sunlight and facing the sun directly. You can read 21 volts but your amperage may not be full and this is why your pump is not running, not enough amps. I would recommend a minimum of a 20 watt panel.

the solar panel is just to charge your inverter,if it is charging and the inverter is on it will drain the current the solar panel is supplying to the batteries,this makes it look like it is not charging ,so i advice you to switch off you inverter when charging it,get another set of batteries connected to your solar panel then charge both, let them be separated so that the new one is not in use so that when solar is out you can switch to the other set of batteries

How are the batteries for that inverter? Have you got a dead battery in the loop?

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

Solar panels come in different ranges of wattages.Add up the wattage of different solar panels you get e.g. Ten 100W solar panels will give you a 1Kw solar system.