Much much easier, and less expensive, to just have the Utility grid connected, 3scam provides all that for basically mahala…. YMMV
Groetnis
Ah come now! Where’s your drive to overkill!
Now now, Escam already spends a few Billion per year on that, enough of an overkill for me 
Groetnis
Patent pending? 
Mocked up the pwm active cooling, and it’s super efficient, 
Groetnis
Ironically not so much. I always say it is based on the parable of the talents, if you happen to know that ancient piece of literature. Those that do well get more, those who do poorly gets their portion taken away. The code is open too… if people wanted to look 
What’s nice about the AC fan is when you inevitably set something on fire, the AC is the first to go, so you don’t end up fanning the flames.
Just going to drop this here…
Now I did not think of that!
My thinking was based on the fan being fed from always-on DB, the plugs below the changeover switch, so if that goes off, the fan goes off.
I had the same, but prefer it automatically controlling for the cooling amount 
Groetnis
Hey, I can also automate it … I can put the fan on a timer, come on at 10am and off at 5pm. 
On a serious note … I like automation, but not too much depth. AC plug timers and a Geyserwise timer, and I’m fine. Some HA and Cronjobs too, and I’ve reached my “quota”.
Haha! My MPII and MPPTs stay fairly cool passively. Haven’t notice them throttling, but I am neurotic about my batteries. As such, I have exactly the same setup myself, just on the batteries. It definitely shaves two or three degrees off, but the temp of my batteries are then maybe 6 degrees above ambient, so can’t really hope to do better… oh how I wish I had an aircon in the garage…
Me and TTT were talking off forum about this. I want to get one of this fans for my garage and then run it from a TH16 to control it. Goldair GIWF26 Industrial Wall Fan - Black (660mm) | Wall Fans | Fans | Gas & Appliances | Builders South Africa
Prezacatly what I used, before the new mod, just a different fan. Set a schedule to start n stop the fan.
Groetnis
@Sarel.Wagner another question for you.
I read something somewhere or might have been a youtube video, can’t quite remember, but I’m not sure if I understood correctly.
In a microgrid system like yours, if oversizing the PV connected to your Fronius which is highly recommended, say 10 kW panels on your 8 kW Primo. For argument sake perfect conditions, panels going at full tilt, generating 10 kW.
If your house draw is 8 kW, will the extra power being generated by the panels, 2 kW in this case charge the batteries?
In a word, no. The Fronius can only output it’s nameplate power, in my case 8.2kW and no more. It simply limits, it can handle the power on the input side, the output and chucks away the rest.
Groetnis
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Ok thanks this makes sense and it’s actually how I had it, but the way someone phrased it just confused me for a moment.
If I may … I stand to be corrected on the Fronius, know this on the MPPT’s
I think the “confusion” may have come from that one can install more panels than what the Fronius or MPPT can use to generate, so that one has longer periods of better production, as both the Fronius and MPPT’s will both “clip” the max watts.
Just never ever exceed the max volts.
EDIT: And also never the max input current.
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Tis the flat top from the over dimensioning of the panels, 10.2kWp in my case on the Fronius and 2.3kWp on the MPPT, both combined. The flat top peak from 11:00 to 14:00 because of over dimensioning.
I am harvesting effectively the max, 10.2kW for 3 hours, thusly generating 30,6kWh just in the 3 hours.
Groetnis
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