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@MrM1 - Myself and a few other folks from this thread are working on a similar solution. I'm in the process of a major code refactor of design #216 here which is being built to accommodate multiple inverters, and could technically run multiple transformers as well (has capability for neutral current monitoring and soft-breaking of the 120v loads). One of the folks is running multiple non-isolated transformers successfully, and uC control would add an additional layer of safety through active current and temp monitoring (currently bench tested, but not yet deployed)
Wow, and I thought I was on the edge of the bell curve seeking a 24V hybrid…12 volt grid tie all-in-one unicorn?
In a recent thread the idea of ‘stealth’ or ‘guerrilla solar’ grid tie microinverters came up. Since I’d been thinking about that it prompted me to purchase one of these units and use it with some spare panels. Since then, however, I have been plagued with the fact that I have 800W of panels...
Because it was a
Yeah, keeping under a budget of $1000 isn’t easy in this donain.
Not really. There are valid points raised. They are being answered over time.
Definitely agreed. We are not in the name calling business. We do want people to understand we went out of our way, PRIOR to importing or selling ANY units, to make sure they were safe to use. It's clear now we needed to take additional steps at a manufacturer level to clarify changes for our market, and in the future we will make sure to follow these new protocols.
I would like to hear @Hedges opinion of the system but the one thing that sticks out at me is that you abandoned the breaker on the transformer Neutral that would have prevented an overload and cut the Inverters output. I assume you guided Poz towards that solution. Also is that Mains ground bonded to the other ground or are you suggesting two different grounding systems?
For that circuit to be safe, the neutral wire running between center tap and neutral busbar of critical loads suboanel needs to be sized for double the rating of the L1 and L2 breakers (or sized for L1 + L2 Amos, if you prefer to think of it that way). And the subpanel itself (and in particular the neutral busbar of the subpanel) also needs to be rated for L1 + L2 amps.
Yes, 2 seperate grounding systems. Unfortunately, you can get current between the 2 grounds, the earth is just a resistor.
Well said. This is a DIY forum not an EE (Electrical Engineering) forum. Their advice is welcome but the flaming of SS is not. In America you have
I believe their business and credibility has probably increased because of the way they have handled it. Nobody is perfect.
That is a bizarre conclusion to me.
I wouldn't say we were ever the target. We just happen to likely be the largest supplier, and only authorized retailer of the product in question (in North America). That being said, there were definitely some ......unfriendly...... accusations about the way we did business and at the end of the day, most people didn't know (due in part to our lack of marketing) that we went out of our way, FAR before this ever became an issue, to make sure we had safe units. I think everyone understands we did everything we could before, during, and after this whole fiasco to make sure everyone was safe.
You statement makes zero sense. Your playing around in the Electrical Engineering world when you mess with power systems.
Go tell your power company inspector you have freedom of choice and see what happens
How did you know to remove the screw? Hmmmm...
250lbs would crack a PCB. Also Injecting in silicone would do almost nothing but fill in the threads on the standoff.
Is this another SS employee account? The Hi-Pot test is a valid test and should be done again after equipment is modified. It is actually required for certification.
Are you smart enough not to touch a water pipe while taking a bath. Do you really understand what this conversation has been about?
Amazon and Signature Solar are two different types of companies. Amazon does not advertise themselves as solar experts.
I think their business is doing just fine. People are asking for information that would normally be provided by any Inverter manufacturer or distributor. Proper Wiring Diagrams are not luxury, they are essential.
The only way the forum will get better is if people with knowledge on the topics chime in and point out ways in which the industry can be made better. Your first statement implies you would prefer that the blind lead the blind. That can only lead to disaster.
Nope, just me here. You should know by now Robby that I'm not afraid of taking a verbal beating on the forums, no need to create burner accounts for it
Just asking because the guy makes his first post and comes out with all of those statements.Nope, just me here. You should know by now Robby that I'm not afraid of taking a verbal beating on the forums, no need to create burner accounts for it
That is the basis of the resistance I’ve read here. People don’t get that something can “work fine” and still have inherent dangers in certain circumstances.
That's what I did, after installing my Growatt. lolGo tell your power company inspector you have freedom of choice and see what happens
Hello Robby. I expected no less from you or your group. I am not frazzled. Your interpretations may be judged differently if brought to a court.You statement makes zero sense. Your playing around in the Electrical Engineering world when you mess with power systems.
If it was not for the Electrical Engineers and other people who are skilled in working with power system doling out advice, this place would be pretty much useless.
Go tell your power company inspector you have freedom of choice and see what happens
How did you know to remove the screw? Hmmmm...
250lbs would crack a PCB. Also Injecting in silicone would do almost nothing but fill in the threads on the standoff.
Is this another SS employee account? The Hi-Pot test is a valid test and should be done again after equipment is modified. It is actually required for certification.
Are you smart enough not to touch a water pipe while taking a bath. Do you really understand what this conversation has been about?
Amazon and Signature Solar are two different types of companies. Amazon does not advertise themselves as solar experts.
I think their business is doing just fine. People are asking for information that would normally be provided by any Inverter manufacturer or distributor. Proper Wiring Diagrams are not luxury, they are essential.
The only way the forum will get better is if people with knowledge on the topics chime in and point out ways in which the industry can be made better. Your first statement implies you would prefer that the blind lead the blind. That can only lead to disaster.
This has been a problem before even this thread was created. Many more threads on the subject of neutral loss and bonding issues. Workarounds attempted, some not so safe.
