Bobby Cannon
New Member
- Joined
- Jan 5, 2021
- Messages
- 32
I have 18 x 320 Renogy Panels (320D). They are in 6 strings of 3 panels. 40v each so the string voltage is ~110v. All strings go into a 6 string combiner. This is a total of 320 x 18 = 5760 watts total. From the combiner I use 8 awg wire to the PV1 input on the Growatt SPF 12000T DVM. Note: the DVM cannot exceed 150v dc for PV.
The 3 x EG4 batteries are in parallel and connect to the Growatt. I have the Growatt programmed (option 5) for LI. This means the inverter will talk to the battery to determine when to bulk, when to float, when to switch back to grid, etc.
Now here is the problem. I cannot seem to get the inverter to pull more than 1.3kw from solar. How or when does the Growatt determine what to pull from the solar panels? It's been uber sunny the last couple days. However my load (at times) takes 80-90% of the 1.3kw so the batteries are left with a measly 200-300 watts to charge. This means I end the day with the 3 batteries only at 65-70%. I feel like there was more overhead that was available but the inverter won't pull it?
I'll take anything, comment / ideas / anything...
The 3 x EG4 batteries are in parallel and connect to the Growatt. I have the Growatt programmed (option 5) for LI. This means the inverter will talk to the battery to determine when to bulk, when to float, when to switch back to grid, etc.
Now here is the problem. I cannot seem to get the inverter to pull more than 1.3kw from solar. How or when does the Growatt determine what to pull from the solar panels? It's been uber sunny the last couple days. However my load (at times) takes 80-90% of the 1.3kw so the batteries are left with a measly 200-300 watts to charge. This means I end the day with the 3 batteries only at 65-70%. I feel like there was more overhead that was available but the inverter won't pull it?
I'll take anything, comment / ideas / anything...