Been running off-grid on batteries since midnight. Getting useful info.
Data so far:
Time: 6am. 6/21/2022
Indoor temp: ambient room temp is 76F.
Battery: is at 56% at 44.9v pack, 3.74v cell, operating battery temperature 27c (80.6 F), surface 75F.
18kw Inverter: temps: transformer coils 104F, core 97F, exhaust 87F, board 81F, surface 78F.
Solar panels: surface temp: 50F (no sun, but light)
Outside inverter box under solar panels: 1300w inverters: 60F, internal cabin temp: 58F
Photo cooling/exhaust fan switch: On and running properly. No sun, but it's light outside
Ambient outside temp is 15c (59 F), concrete ground 63F, surface soil 59F, humidity 75%, wind 4mph.
The panels should be receiving sunshine around 8-10am and start producing power. Will then manually connect the panel output to the 18kw inverter AC input side to charge battery. Will be automated later on. Once charged, the solar panel power output will be diverted to the 18kw AC output side and the system should continue to run mostly off solar.