Thanks @sunshine_eggo! This is all VERY helpful information! I am very new to all of this, and feel a bit like I'm drinking from a fire hose. I really appreciate you and @Rocketman taking the time to addressing the flaws in my thinking as well as my system. I'm still learning much of the lingo...
Thanks @Militoy. It looks like the the bar stock I have is 6063-T5, which is between 2-5% less conductive. Based on the chart (linked below), I should be able to adequately pull ~151a on the aluminum bar stock I have. I doubt I'll be pulling the full 160a of load that my batteries can...
I've gotten some really constructive feedback in this thread so far. Attached is my updated plan design updated with suggestions/feedback proposed in this thread. Green BG is new elements being added, and yellow is the modified panel configuration (from 3 panels all in series to 4 panels in 2p2s...
EDIT: Updated plan design here (further down in this thread).
I should have 2 additional 395w panels to add to my solar array in the next week or two. My plan is to add the Renogy Rover 30A MPPT charge controller to handle the two additional panels, since the Growatt 3000 24v can only handle...
I have a 24v nominal battery made of Headway 10ah LFP cells, and despite taking care to make sure the parallel strings are all roughly the same capacity, I'm finding that a few strings dropping in capacity much more quickly than others, not always the same strings.
The BMS is a JK with 2A...
Ahh, got it. So if I'm understanding correctly, I would leave the generator/shore power running into the WF-T30 alone, and reroute the power out of the WF-T30 from the breaker panel to the Growatt. Then run AC out from the growatt to the AC IN on the 30 amp breaker/distro panel (where the WF-T30...
As the post title suggests, I'd like to know if 1"x.125" aluminum I have will suffice for busbars in my temporary setup while building out a full mobile build (Class C RV). I want to get some basic power asap while I take my time getting the final build installed correctly. I expect to have the...
Thanks @Jamsolar876. Here's the additional info you need:
1. PV: 3 panels, 395w/10a/40.7v (under load), bifacial, wired in series.
2. 8 24v nominal batteries each constructed from 16 Headway 38120S 10ah cells + BMS (wired in 8s2p, 29.2v 20ah total for each). All 8 batteries are currently...
Got it. The BMS used in the batteries is a custom-built BMS. It doesn't seem to have the specs listed, but I was informed that it's a 60A BMS. Assuming all batteries/BMS are functioning correctly, then having them wired in parallel with busbars would allow them to accept a much larger number for...
Thanks @sunshine_eggo! Here's the spec sheet on my panels:
https://signaturesolar.com/content/documents/URE/JW-HT144Pspec.pdf
The upper left most chart on page 2 (third column from the right) indicate that my panels have an open circuit (Voc) of 49.03 and a max voltage of 40.73 under load. I...
I'm a total noob when it comes to solar/off-grid, but nonetheless I'm diving head-first into a solar install on my RV. It's mostly installed (and temporarily working woohoo!), but I still have a few pieces to figure out. (I've listed the specs of my current starter solar configuration at the...
@mkaye Do you think this setup would fit the loop condition you were referring to? Is there anything else I need to include/check to ensure the converter is only handling the house batteries, and not looping back to the Growatt?
Can you help me understand why my Growatt isn't ever taking my batteries to my set float value (28.8v)? I currently have a 1200w solar setup with a set of 24v LiFePO4 batteries in parallel (160ah total). For some reason, the Growatt isn't ever charging my batteries above 27v, even though it's...
Thanks Rocketman. Are there any considerations re: max potential combined amperage when running multiple controllers to one bank? The cells are 1C (10a) standard, but can charge as high as 3C I believe. But I'm assuming the BMS on each battery would handle charge current anyway, and limit...
I need to order breakers/fuses for my current (and evolving) solar build. Hoping for final sign-off or correction so I can sleep well knowing it's all well-protected.
PV: My understanding is that I don't need fuses in-between panels when wired in series or 2 (or fewer) in parallel. That leaves...
I have the Growatt SPF 3000TL LVM with the WiFi module, and it's all working correctly. But the battery voltage only gives whole number values in the app (rounding up or down on half-volt values). Is there any way to configure the app to show 1/10th volt values like I see on the Growatt panel...
I am working on an RV solar build. I have an initial system installed and working (which has been an awesome start), but I still have 2 additional panels, another MPPT controller, and circuit protections to install. The last part (circuit breakers, disconnects, fuses, etc) is what is most...
Here's the data on the individual Headway 38120S cells in my batteries. It lists recommended charge current at 1C (10a), and max charge current at 2C. I was mistaken that max is 3C — that's for discharge.
Hi, I have been running my Growatt SPF 3000TL LVM-24P for a few months now, and while it's not perfect, it does get the job done for the most part. However, one issue I've had since day one with the Wi-Fi dongle is that the Charge Voltage and Float Voltage only allow values in a range of...
I am interested in potentially using Solar Assistant for my RV solar build. I'm curious, though, how many of the components can be connected/monitored via SA. The components I have so far are:
- Growatt SPF 3000TL LVM
- Renogy Rover 40a Charge Controller w/bt-1 module
- Renogy One Core wifi...