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I've used and fitted a few they have their downsides but generally work well Doesn't apply completely in this case but overhead sling fibre in my area gets destroyed by squirrels regularly, pesky things can't bite through wifi Protection is key especially if op is in an area with ground...

Yes and no everyone should do there research and inform themselves before going into any project especially one fraught with dangers. I've been playing with small solar projects for years but even as a former electrician, I spent weeks understanding my simple AC system before fitting the whole...

Lol sorry but the chances of me getting any non standard alloys here is like looking for hens teeth Flat as a pancake and sadly I can't even find membrane for the roof let alone the garden, a sand hill would wash away in a day with the rainfall here I'll be building a car showroom or at least...

Wonder if that works for Japanese knotweed. Past the jokes though not sure the guy wants to empty battery acid out every time he leaves his camper.

Running through my current inverter on ups mode there's about a 15% efficiency loss, not sure if it's the same for other modes but I guess I won't know untill I have the unit. I wasn't planning on manually switching a contacter at dusk the whole thing would be automated.

milliohms or Megaohms? Best bet is to test from the battery terminals to the inverter terminals to test lugs/connections then get back to us.

I just had a look for similar stories on Reddit and couldn't find much just some guy doing the math on a Chinese 12v 8kw inverter needing 5/8 inch thick cables.

With all this why don't you just feed it all into home assistant have one app and not need to rely on someone else's server.

Wow I looked them up a 12000btu for $1800 no expensive tools needed!!! I can buy a 12000btu Daikin for less than $400, hell I can likely buy all the tools and a beatup Hilux rather than ship it for $1400

Sorry what I mean is of I wanted to connect the BMS to the inverter by swapping the Huawei BMS out for a jbd one what reference material would give me a better understanding of how it's done and would it even be possible with a 15s configuration, not sure how many parallel connections the jbd...

Or a dodgy mexican factory boss working for takata? I mean from what i skimmed over it wasnt a global issue only parts comming out of their mexican plant being exported to the US. As i said japanese factories world-wide normally only have a japanese QC department and thats the manufacturing...

Newbie and non expert at solar here but the fact you said overload in your original post would lead me to believe your startup current on the AC unit is too high for your system. Anything with a compressor/motor that doesn't run off an inverter draws a massive load in comparison to working load...

Going down the home assistant route would give you more control but it's likely alot of work to move all your tuya stuff over to ha then integrated your jk bms via esphome, best think I could think of is some form of tuya power monitoring device but all I can find is AC versions, anything with...

So as my inverters soc readings are such poorly defined I'm contemplating building my own shunt as a test for possibly building more for my bigger system can anyone point me towards some reference material as I'm unfamiliar with how the get accurate readings. When I say building my own I mean...

The issue here is not many people actually have a clue, the more batteries I look at the more I see things like " New" and ">2000 cycles" in the listing. My one brother in law works as a government environmental inspector so it might be a better shout to ask him if he deals with any factories...

Strangely your ha entity for charging status indicates float for most of the day then boost in the early morning/late afternoon. I would grab as big as 12v load as you can like an old car stereo or something else you may have that runs off a car cigarette lighter and try that also try...

Wow your that far ahead in thinking I'm still focused on trying to work out what the ball is attached to the cable on the right.

Sorry I was thinking it was 24v as it's been suggested check each battery independently and check as much wiring as your comfortable with if the batteries have been wired incorrectly who knows what other gremlins might be hiding anything your confused take a photo and post it.

Multimeter? Can test voltage going to the controller?

Spanners and stuff I'm sure you have, a core drill to punch a hole through the wall but it's not necessary, then a vacuum pump, flange tool and a set of gauges, I guess you could buy cheap ones if your only doing it once and make sure you use nylog on the joints as the cheap flange tools tend to...

Don't buy a cheap non inverter model is my only advise as the power draw is massive compared to inverter but then again I'm on a solar forum kWh aren't such a problem for you lot.

This one? https://github.com/leodesigner/powmr4500_comm

So $210 and 30 minutes of youtube Vs a $1800 system that you might save a few hours of installation time on.

Ours have some form of canbus but i really cant be bothered to work out what it is, then decode the registers myself. Im really not a fan of any 3rd party integrations too many have disabled api access in the years I've used home assistant, then put their goods behind a cloud paywall or just...

I have the Powmr 12v 1.6kw version as a ups for my server Rack, the fans took a while to get used to and the soc seems to be completely made up but it seems to be a pretty good unit, I'm using a esp to decide the data and feed it into home assistant which is great as I can manage the load by...

From the photo of the cable it pretty much can indicate either the crimp was too large for the cable or the corrosion loosened the crimp one thing I would advise for @Delmar is looking at the corrosion I'd cover it in dielectric or some other form of rust protection next try if your using steel...

I doubt the railing is attached to the builings rebar and the suggested cable a few inches deep only works on very wet soil. they crazy thing is your air conditioner should be earthed they normally fit rods just for them and for the electric showers but im guessing you would have noticed the...

So I've managed to find a readily available source for stainless steel coils, but they only come in 3/8" 6m lengths and I'm not all that happy about making non accessable connections underground especially with oil. so I'm likely to go with your 2m depth Tanuki that gives me about 6 coils at...

So no expensive tools necessary unless you want a warranty? So saving $60 on a flare tool in the end.

I know the style I'm quite surprised though, obviously manufacturers can suggest what they want but atleast in the UK it would be considered against BS7671 electrical regs I think they actually suggest ferrules for class 5 and 6 cables on all terminal types now for the exact reason above, to...

I think as its in UPS mode the AC is being converted to DC so it can switch between grid or battery without any downtime rather than pass-through, that probably explains the efficiency loss. It isn't a big problem to fix after i install everything i just need to draw the circuit down and think...

100ft really isn't a big deal especially when your dealing with alot of panels in series, but my two cents would be your talking about big batteries big inverters and not much space so why not make a dedicated (fire safe) room somewhere off the garage to fit everything, then run any cables from...

So I live in east Thailand ambient temps this spring have been hitting 44°c/111°f on my shaded balcony I only fitted my larger system a few weeks ago and it's currently monsoon season so it's a lot cooler but summer will be a interesting test. I'm automating large floor fans to try keep the...

Hope this is just a normal link...

Each to their own I guess. UK and Europe demand a resistance of 5ohms or less and rods need to be placed the same distance apart as their depth.

ROFL ok well like I said I'd try the two in series rather than 3 if the test comes out ok and the voltage isn't clipping the charge then go for 2s2p there will obviously be some losses but it's likely going to be better than it dropping into pwm

first one that popped up

Agree with above the other factor you need to account for is the numbers you gave likely don't account for startup (inrush current) which could be greatly more than you quoted if you stick to a DC pump that won't be as much of an issue but best guess is with AC your quoted pump might have a...

I can but the domestic market is so much cheaper I'm currently looking at lvtopsun 16s 234ah batteries they come in at 55,000 baht which is equivalent to $1500/£1200. I've also noticed Deye 10kw single phase inverters are on the Thai approved inverter list, double the price of the 5kw and 6kw...

Not sure how accurate the data is for us in SE Asia I'm currently getting 250% of any projected daily production almost every day. From 760w of panels I get on average 2kwh on rainy days during this time of the year(monsoon season but high sun angle as it's close to summer solstice). We average...

Do you have any telemetry for the unit? Ive seen weird reports of similar instances that charging increases during morning and evening when the panels voltage is lower.

No directly to the battery with heavy load should be fine we want the battery to have a load so that the controller can see a realistic voltage of the battery. When you get a voltage reading from a battery especially charging it's normally not a true voltage I suspect that's what's happening...

0.31 percentile lol

Yep servicing looks like an issue I think that's the reason though mini splits are generally easier to service and maintain.

I'm guessing it's srne as they produce them for alot of the other Chinese brands but when I purchased my cheap Powmr HF AiO I noticed a few LF AiO for sale also, I'm a idiot and have no idea of the difference but thought considering the content of this thread it might be relevant.

Esphome has a provision for ble proxies lots of videos on YouTube but as a standalone system maybe something like this could work. https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-guides/esp-ble-mesh/ble-mesh-index.html

I do enjoy watching contractors trying to fix fibre optic lines with hopes, dreams and tape

yes electricity does take the shortest route but in resistive terms. Its not going to go directly down, through concrete when theres a grounded steel frame above you. I am indeed suggesting that that hollow steel beam is welded to the rebar in the concrete pillars that supports the whole house...

unsure of what solar charge controller you have or what your panel specs are but if you connect panels in series you need to stay below the controllers maximum voltage/power(watts), if they are in parallel like your are then you need to stay below maximum current(amps)/power(watts) of the solar...

$110 per cell? How do I say this without you feeling sick? Give a bigger number? ¢3000 per cell including delivery. I looked at the 280ah cells ¢5000 per cell but those are in aluminium housing and your earlier post suggested against this. I've also looked at the sinopoly cells they are...