Does anyone know how much power can you get out of a Rosie inverter using generator support? Is it limited to the 60 amp output rating of the unit or something lower than that? I'm assuming the Rosie would make it's rated 7 kW and use generator power up to 7.4 kW to make the 60 amp output. Is this correct?
Thanks for your help.
Quote from: Wirenut on March 09, 2026, 10:01:27 PMDoes anyone know how much power can you get out of a Rosie inverter using generator support? Is it limited to the 60 amp output rating of the unit or something lower than that? I'm assuming the Rosie would make it's rated 7 kW and use generator power up to 7.4 kW to make the 60 amp output. Is this correct?
Thanks for your help.
When there's AC input it can take 30A of 240V (or 120V), to pass thru to loads and use any remaining current for its battery charger. The 60A inverter output rating is a 60 second surge value. Otherwise it would be 30A of 240V (30A on each 120V leg).
I realize the inverter will only do 30 amps. I was referring to the rest of the device: wiring, relays, etc. I think the AC output breaker in the Rosie breaker box is also a 60. Are you saying the Risie can use It's 30 amps of inverter capacity with 30 from the generatorfor 60 amps total to the loads? That would mean the breaker is good for 60 amps continuous?
Quote from: Wirenut on March 10, 2026, 06:40:29 AMI realize the inverter will only do 30 amps. I was referring to the rest of the device: wiring, relays, etc. I think the AC output breaker in the Rosie breaker box is also a 60. Are you saying the Risie can use It's 30 amps of inverter capacity with 30 from the generatorfor 60 amps total to the loads? That would mean the breaker is good for 60 amps continuous?
My apologies I made a mistake in previous post. Please ignore that.
The breaker box uses MNEAC60 fully rated hydraulic-magnetic breakers that allow for a full 60A.
This post from one of the Midnite guys on diysolarforum should clear things up. Basically you need to enable grid support mode:
"Halfcrazy
Solar Enthusiast
Dec 31, 2023
#211
Cheap 4-life said:
The way I read what @Halfcrazy said was that the grid simultaneously powers the load when battery SOC is below the settable percentage not above.
Correct. For example if you set grid support to 70% the Rosie will ignore the grid when batteries re at 70% or higher. Unless the load exceeds Rosies ability then she will pull the excess from the grid:
1- Battery at 75% and load is 5kw Rosie powers it all
2- Battery at 75% and load is 12kw Rosie powers 6 kw and Grid powers 6kw
3- Battery is at 69% Rosie powers no load and the grid passes through to power loads"
Post in thread 'Has anybody used the Rosie inverter yet for prime time?' https://diysolarforum.com/threads/has-anybody-used-the-rosie-inverter-yet-for-prime-time.60074/post-964040
If AC INPUT = GENERATOR then Grid Support is DISABLED. There is no "generator support" in the Rosie Inverter.
Grid Support only works in AC INPUT = GRID MODE. If your generator connects and runs in AC = GRID mode then you may get support or the generator may just go "wawawawawawa" and start acting funny. So please don't call support and say you are having issues getting grid support to work with a generator. It's not supported officially.
So there isn't officially gen support? I didn't realize that. I thought I had seen it in the menu before. Maybe it's there but disabled? The system I'm designing would bee 3 Rosies in parallel and a 26 kW generator. My customer was asking if he could use the inverter and generator together if he needed more amps to run some shop tools or something. I was trying to make sure that was possible.