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diy solar

diy solar

Victron is Over-priced Eurotrash. Why would anybody buy Victron over an AiO?

Tax credit?
The solar investment tax credit, 30% assuming you are using for your primary or secondary property and it's being put into service for the first time to power your house loads via solar. So used equipment doesn't qualify.


 
The solar investment tax credit, 30% assuming you are using for your primary or secondary property and it's being put into service for the first time to power your house loads via solar. So used equipment doesn't qualify.


Ah yeah, doesn't apply to me.
 
I thought someone documented in this thread adding relays to a Cerbo GX by adding a device to the Cerbo's USB port. Searching the thread and the whole site came up with nothing. Anybody remember that thread/post?
 

I had found that one earlier. The thread/post I'm looking for has a much less complex install. I'm pretty sure it's within the past three months, so it wouldn't be in the Victron archive. That same author made a similar post in the new Victron community site, bringing forward similar information so it was in the new site and didn't get lost.
 
I had found that one earlier. The thread/post I'm looking for has a much less complex install. I'm pretty sure it's within the past three months, so it wouldn't be in the Victron archive. That same author made a similar post in the new Victron community site, bringing forward similar information so it was in the new site and didn't get lost.
Ah, I don't recall.
Something I would be interested in too.
 
If every watt counts in the dark of winter, I wouldn't recommend the 450/100. There are performance compromises to get that isolation and fan cooling I guess. And then at full power its pissing away nearly 200W...
Reinforces my admiration for what one of the smaller MPPTs can do. Thinking about putting strings in parallel w/ the wiring implications kinda stinks unfortunately. I suppose there's no good answer here, either favor max efficiency, or slightly less for convenience, for lack of a better word.
 
A few weeks ago with panels tilted at 60°, nice bright white snow on the ground, clear panels and blue sky with 0°F temps, I saw 12.3Kw from 8.8 Kw of array sustained all thru peak sun. Impressed the heck out of me but I also thought the MPPT's might not like it.
 
Reinforces my admiration for what one of the smaller MPPTs can do. Thinking about putting strings in parallel w/ the wiring implications kinda stinks unfortunately. I suppose there's no good answer here, either favor max efficiency, or slightly less for convenience, for lack of a better word.
Honestly it's easier to get a full 100A out of a 250/100 than it is from a 450/100, because of the 4kW per tracker limits on the 450 units.

In my case, vikram 375W bifacials with 41V VOC. Can run a series max of 5s on a 250, or 10s on a 450.

Ten 375W in 10s on 450 - 3750W or approximately 80A of output. To get the other 20A out of the 450 you need to use the second tracker. So now you have two home runs back to the 450 from the panels.

With 250/100, I can run 5s3p with 15 panels, and one home run back to scc, 5625W. Can fully utilize the scc. Now for this option I do need three inline mc4 fuses and some Y splitters. Let's say $50. But I can then bring one 10 AWG pair back to scc, versus say two 12awg for the 450/100. Generally the price increase for the 10awg wire over the 12awg is well less than double, so cheaper in the end.
 
5S3P using Vikram Prexos 375W panels comes to 32.25A rated current. Add in extra for bifacial gain and 8AWG should be used.
 

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