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Another option you may consider is running the garage area off-grid fully, but keeping your existing grid line in a separate panel and either connecting it to the 'generator' input of the inverter OR using it on a single circuit with a 48v battery charger in case your PV can't keep up with load...

I just wanted to add another PDF I got from GSL. It doesn't say too much, but it could provide some insight if others are looking into this inverter. (Notice even their sticker shows megarevo part number (R8kLNA)

The "bus over voltage" error is also one I experienced. I think it has something to do with the mix of PV power & battery when the load is right at the edge of PV production, or an issue with the PV string. At least that's when I experienced it. It was early in the morning, so load was...

I has to manually add it to overview. How do you have 55 entity, do they al work???

Anyone having an issue with battery charging current? It seems my inverters are maxing at 56A to the battery. I can change the charge current lower, and the inverters will go right to that setting, but if I go above 56a, they won't go over. I know its not PV capacity because when I turn on...

I did the exact same thing when I powered on my unit! I double checked all my connections, settings, battery, etc. And yeap, RSD button wasn't pressed. I wish they made it more clear in the manual that "pushed" is ON. Every safety switch we use is push to stop, twist/pull to reset. I think...

That is how I plan to use mine. Unfortunately, I just got mine on Wednesday, and the CTs don't fit my 200A service aluminum mains. It is the right size for the neutral, but does not fit the mains. I need to see if I can source a CT that will work on the larger diameter cable.

Sorry, I misread. I want to export all available energy back to the main grid panel, but NOT past the CTs, neither from solar or battery. I see you only mentioned not using battery back past the CTs.

I'm using lead-acid mode, there is no reporting to inverter. Maybe that is the issue? Temperature is not an issue as my shop is heated. Maybe the inverter not seeing temp is limiting, though. I've tried changing settings and rebooting and nothing has helped so far. Looking back at the logs...

Here is battery current, for example.

But the registers are different. Which yaml did you choose?

If it is the Megarevo unit, generator input wasn't enabled until the very newest firmware

I'm running 2 in parallel for about a year now. I am off-grid. Are you using BMS/Lithium battery or are you set to Lead-Acid? Does the inverter batt voltage show the same voltage your physically measure at the terminals? What is your actual measured PV input voltage?