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Joined 1 year ago
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Cake day: July 10th, 2023

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  • I checked the manual and it's actually documented to trip at 137V and open its fault relay, and won't reclose until the input voltage drops to 134V. This is hidden in the fault section and not really advertised in the specs.

    Obviously in a cold weather overvoltage situation this loss of load causes immediate runaway, which resulted in many full days of lost generation until I rewired the array down to 2s strings.

    This issue was actually what resulted in me building the first dump load for the system, because as long as I kept the array loaded enough it wouldn't trip out. No way I was breaking the connectors or my fingers off during several weeks at -30C!


  • Conext series support modbus BUT only through an overpriced gateway unit, the actual devices speak Xanbus unless they have updated them. There have been reverse engineering efforts that I think found it to be a polarity flipped or bit flipped CANbus but at the time nobody had a reliable translation layer. I believe Schneider bought Xantrex and rebranded their inverters and chargers as their Conext solar line.

    The "do not exceed" nameplate ratings may be more typical in solar, but in the regular electrical world when I buy a solid state device like a 480 volt VFD, I expect it to run at 480VAC, and in fact to have a fairly broad operating range from probably 450-500VAC. Likewise I would expect the current rating to be full load operating current, hopefully with at least a 10% service factor and 20% safety margin on top of that.

    I was honestly pretty disappointed when a 150VDC unit tripped offline at 140VDC, not even making the "nameplate rating" but if this is standard for the industry I guess I can't pick at Schneider for that at least.



  • As a farmer we haven't even seen the beginning of food inflation. The entire country and much of the world is in drought, and we're only entering this El Nino cycle.

    I sold all my animals and my crops are a wash. Drought has crushed yields over a vast area of Canada's agricultural land. Combining the other factors at play such as war between two massive grain producers, there's a chance that global food demand could actually outstrip production this year, for the first time since the start of the Green Revolution.

    With that said, processors and middlemen are definitely grabbing the large portion of the increased value of food at the stores. Cattle prices are up but nowhere near the extent that beef has risen, and will soon plummet as animals are dumped on the market for lack of feed. What won't plummet is the consumer price of beef, I can almost guarantee it. And I shudder to think of what grain and bread prices could be by the end of this year. Very glad to have a freezer of meat, huge garden, a good wheat grinder and bins of grain that would last my family decades.


  • I'm an electrician, I found my own solar panels incredibly easy to install. The job is 90% racking and I would recommend buying a racking package if possible which includes all mounts, rail and fasteners.

    Take care as solar panels are ALWAYS LIVE. This is why they use the shielded connectors that they do. Do all the rest of your wiring first, then plug the panels in last.

    Make sure you have appropriate disconnecting means. If this is going to be grid tied in any way, make sure you're familiar with the code as it will be inspected. If not grid tied you may be exempt, but this is no reason to just slap it up, still follow the code as it's there for your safety.

    I recommend grid-interactive systems over grid-tied if you actually want to be power independent. Microinverters seem great until the power goes out and your panels are good for nothing. I would recommend a power blending transverter type system that allows 3-way power flow between panels, battery and grid. They have come way down in price and allow seamless integration of your loads compared to a charger/inverter system like I have.

    Run a string voltage as close as possible to your battery voltage to avoid conversion losses. It's tempting to go for high string voltages but roof mount distances are usually really short and conversion will likely be most of your loss. I started with 140VDC strings and my charger ran hot, dropping to 70VDC made it run cool and boosted my output by over 10%.

    Depending on your utility it may not be worth selling power and the hassle or extra fees and regulations that come with it. That's the case here - I just have automation set up to burn excess power for heat in winter and cooling in summer.

    Best of luck with your install, for sure it is way cheaper to DIY and not hard at all.