Solar inverter to battery - calculate wire size

In this video I will explain how to calculate maximum safe current between the solar inverter and battery (AGM GEL or LiFePo4) for popular hybrid and off-grid inverters like EaSun, Solfar, Must, Growatt , Fronius,  SolarEdge, Sungrow and more.

Maximum current value is required to obtain proper Fuse and wire size.

Power rated and battery voltage system could vary but the most popular is 5.5KW or 10 KW for 48 V battery or 3 KW for 24 volt battery.
We well also talk about
Why wire size matters and what can happens it is not selected properly
Why we should keep our connection cables between battery and solar inverter as short possible
How to calculate direct current fuse rate between battery and inverter.
How to obtain right fuse between battery and solar inverter.
What is the formula for Imax in 48V or 24V battery system

To calculate the maximum current of a DC circuit between a battery and solar inverter, you can use the general following formula:

I = P / V

Where I is the maximum current, P is the maximum power of the battery in watts, and V is the voltage of the battery.

For example, let's say the maximum power of the solar #inverter is 5500  watts and the #voltage of the battery is 48volts. The maximum #current of the circuit would be:

I = 5500 watts / 48 volts = 115 Amps

Keep in mind that this is the maximum current that the circuit can handle under ideal conditions. In practice, the actual current may be lower due to factors such as power loss and resistive heating.

Another example:
for 3000 Watts rated offgrid solar inverter  with 24 volts battery maximum current will be:
I = 3000 / 24 = 125 Amps

Whole playlist about offgrid backup power solar system:
DIY offgrid solar system

Thanks for watching it was  @CuAgFe

#diy #offgrid #battery #solar