Check the rated duty cycle, most of them are rated for 5-10min on, then a cool down of 15 min. I transfer 60 gallons at a time to a storage tank. It takes 10 min or so. The pump gets damn hot. There may be ones out there that can run continuously.
It has definitely been a miserable few weeks in lower Michigan as it relates to the sun. I read somewhere we lead the country in cloudy days during winter months. Great Lakes are a blessing and a curse!
https://signaturesolar.com/growatt-48v-3kw-250vdc-stackable-off-grid-inverter/
The ONLY reason I'm selling this is I didn't consider voltage correction factor for lower temps with my solar array. I'll be too close to the max PV input voltage for my comfort.
NEW, never powered up.
This unit is...