If the house panel is connected to the power grid the inverter can be programmed to sell excess power back to the power company.
Solar battery bank inverter.
For example 1200w drawn at 240v is only 5a whereas at 12v this current increases to 100a.
I want to maintain the 70 c temperature of 50 liters approx water using 500 w dc heater for 24 7.
The inverter will convert the dc current from the batteries to 110 volt ac current for use in the house.
When using an inverter the current draw on the battery side can be extremely high so you may need a battery bank that is larger than the minimum.
If we connected one positive and one negative from a 12 volt battery bank to our dc breaker panel large enough to handle both inverters 12 000 watts we would need cable large enough to handle 1000 amps with a 1000 amp class t fuse at the battery bank and then split 500 amps with two 500 amp breakers to each inverter.
The designer then connects the batteries to produce the total amphour capacity of the battery bank.
Because of the better efficiency and deeper discharge depth lithium battery banks tend to be only 50 60 of the size of a comparable lead acid bank.
The lithium batteries we use are purpose built for off grid solar and utilize a special lithium chemistry called lithium ferro phosphate lifepo4 commonly called lfp.
Connect the battery bank to the input lugs of the inverter and then connect the inverter to the house panel.
Your inverter input voltage the system voltage is the combined voltage of the entire battery bank.
The solar panels the charge controller and the inverter will all use this voltage.
I have seen the excel sheet you have prepared for design of solar panel inverter and battery bank and it is awesome.
Here my application is little different on solar water heater.
Choose your system battery bank voltage.
Call wholesale solar to find out which one of their complete battery banks is right for you.
Selecting the right battery bank for your off grid solar power or back up system is an important decision.