This is an interesting question, what is the fault level at the inverter when it switches over to battery backup, if you have one, 2 or 10 batteries connected.
How do you work out the fault level when carrying out the inspection report for the COC?
Lets say a you are using 5.2 kwh (48 VDC) batteries, in parallel.
I am interested to see some of the calculations done by electricians who issue COC for solar installations.
Where on the test report would one enter those particulars ?
Your Fault level on the AC output will be the max peak output of the inverter which is anywhere between 1,5 to 2 times the rating of the inverter .
The fault level is low.
The DC fault level internally on the inverter is a different story - With Lithium the BMS will restrict the fault current.
With Gel it takes a bit of calculation but is generally around 12 times the Amp hr rating
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