Bud Martin
Solar Wizard
- Joined
- Aug 27, 2020
- Messages
- 4,844
Well VOC of the panel is 40V so if she reading 17.4V from the array then there is problem. At this I do not believe what she is reporting are correct. She need to provide the pictures of her setup and what are being display on the scc.Well, if she "put the multi meter leads on the end of the positive and negative wire coming in off the solar array", she was obviously measuring voltage. So it could be 17.4. Not particularly relevant.
A few point I would like to make. Personal opinions, obviously.
- Panels, they sell them everywhere. Why have them shipped from far away? Just buy locally.
- Technical specifications are all good and fine. Real life is more... real :·)
Four 300W panels (well, 2 if they are 12V and you need 24) plus (I guess) some 400 Ah of batteries, should be fine to run a 1000W A/C unit.
If you run it during the sun hours, and use the generator on overcast ones.
Even though, 300W, it's theoretical. Real-life, call it 150. Non-ideal angle, non-perfect radiation, heat...
Likewise, and in this case I see this as the crux of the matter, a 3KW inverter. To run 1KW.
Sporadically, fine. Continuously, for four hours... it won't like it, and above all you won't like it.
It will get extremely hot. The fan will be on all the time at maximum power. It will suffer and degrade.
It seems to me... as I've said, they do sell 24V evaporative coolers Not expensive.
That would take the inverter out of the equation and basically solve the problem.
At this I sure like to know if she fixes the PV inoput Voltage to be at <70V max PV input and if the setup is even working at this point.
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