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This started happening to me in the last week as well. When you actually CLOSE the app on your iPhone (by flicking it UP) and then re-open it, it has a 100% success rate. Trying to refresh it after that is 100% failure rate. This strongly indicates that there's something wrong with the app's...

It looks like I could use another of that same exact Siemens service panel to add breakers between the inverter and transformer. Two double-pole 25A breakers. One is a backfeed breaker coming from the inverter to power the panel. The other powers (and protects) the input of the transformer.

Combiner box is for future extension and it gives me a place to install a surge protection device (midnite solar). This is my first attempt at DIY off-grid solar, so it's possible that I chose the wrong inverter. I picked the SPF 5k ES because of its higher PV input voltage, which I thought...

Yeah, the one-battery hookup is pretty obvious :D Alligators always look happy to me with their mouth open.

Do you have your batteries in the rack? Would you be able to post a picture of how you hook the charger up to the batteries? Alligator clips onto the bus bars or something?

Interesting. I have just a normal wall outlet available. It's got normal 12/2 going to a 20A circuit breaker. Nothing large is on that circuit. I wonder if it's a sneaky or stupid idea to attempt to make the "25A" work on that.... ?

Yeah, I have the transformer too.

Agreed, but that seems to be what chargers under 15A have, right? Do you know of any such 120VAC charger that doesn't have an alligator clip but something I could wire onto my battery bus bar?

hahaha, this is the problem, right? It's the "US model" that is labelled as ES. I purchased it directly from SignatureSolar.

it's my own fault for not saying which model I had up front. Most 120VAC battery chargers under 15A have alligator clips to be placed onto the battery terminals. In my case, should I clip those to the position and negative bus bars in my rack? How to correctly hook up alligator clips to an...

I thought that the consensus on this forum was that the Growatt 5000 ES is safe so long as you don't use the AC input? That's why I was trying to avoid using the AC in on the growatt. Do you disagree?

I have 2 EG4 48v 100 AH rackmount batteries (LiFePo4) in parallel that will be charged by a growatt inverter getting its power from solar panels. After a string of cloudy days, the batteries can run low and I'd like to be able to charge them using something I can plug into a normal outlet in my...

Everything? I would think that it would protect the transformer from a misbehaving inverter, but how does the breaker on the output of the growatt protect everything? I'm super-curious to hear more about this? The breaker on the positive terminal of the battery lead was suggested by Signature...

FilterGuy thank you for taking time to respond. Yes, I have been following that controversy. I ordered directly from Signature Solar, so there is no screw to remove - luckily. I had been planning to use the grid to pass through but I'm not going to do that any longer. Honestly, I made that...

I know that the solar array is pitifully small for the system designed here, but other than that - do you see anything unsafe or outright incorrect here? Am I going to bond ground and neutral in the correct place? Are the cables correctly sized? Am I missing breakers anywhere?