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Some hybrids do have the facility to draw a minimal load from the grid when in no-export mode (Deye certainly do). The idea being that any minor exports that may occur during load changes are absorbed by the constant import so that the inverter never, ever exports (some grid operators seem to...

Sorry, I can't sit through 7 minutes of that voice. 10 lines of text and some drawings works better for me :) I do note this comment mind.

30m to the CT ought to be no issue (does the inverter manual have a distance limit?) using 4 cores of the Cat-6 per side, although I'd probably use a 2-core flex (maybe 1.0 or 1.5mm2) rather than the Cat-6, keep it reasonably separated from the power cables. What you have drawn should function...

Nah, but they glow so you can find them when the power is out.

Me too also a 787 in about 5 hours, and on the daylight side of the planet!!

Not that specific shunt, but I'm going through a similar process. My 200A shunt used to hang off the battery bus-bar with the cable hanging off the bottom. But after reading a post on here where the shunt apparently failed on overheat and dropped the wire somewhere it shouldn't go I've had a...

This idea (using a craft-knife not the wheel-cutter just yet) seems to work best for me today.

Yeah, it was a 1961 G2 like this one https://wesellclassicbikes.co.uk/products/matchless-g2-250cc-1961 Back then it was a throwaway machine, now ...

How are you testing your panel output?

Just putting the lugs on the 50mm2 battery cable. I should have bought a hydraulic crimper!!! My 10-year-old, Indian-made, lever-type beast goes to 50mm2, my British-made (and ancient) body doesn't. Adding a 1m bar to the handle sorted it for the half-dozen I need today.

This, dear readers, is why we have forums!! It's so simple I wonder why I didn't think of it. I'll just run off and try it on the 35mm2, the 50mm crimps are somewhere on a delivery truck. Thanks for the "obnoxious music" warning. EDIT Well knock me sideways with a wet kipper, it only ruddy...

My "fairly fat" cable of choice is 35mm2 made up of 490 x 0.3mm diameter strands, this makes it a bit flexible. I've got some silicone insulated 50mm2 with a massive 10,000 strands (not really sure I believe that, but I'm not counting them) for a new job that's a bit tight on space, it's...

I would go for a proper 48V battery pack with a single 16S BMS. There's a risk of 4 x 12V packs going out of balance with one another with attendant issues. Just how much autonomy do you need from your batteries? Your panels are going to be generating about 25kWh per day (very much dependent...

This diagram is probably your best bet. With no PE from the grid itself the Grid-PE connection would be your local ground rod. When the grid is down the N-PE relay closes grounding the N on the Load output allowing your RCD/RCBOs to operate correctly.

My dad was a baker, so I did lots of baking and confectionery during school holidays. But. He was also a keen DIYer, mostly woodwork but he did electrics too. I was 10 when he trusted me with a power-saw!! I dabbled with hobby electronics (early 70s anything with more than 3 legs was...

Your first port of call should be the book of words for your inverter, I'm assuming you came up dry there :( A TT system doesn't have a N-G bond at the customer, the N is grounded at the transformer and nowhere else. When running off-grid you need to simulate that source N earth so that your...

But it's the underwear that's important in the event of an accident. At least, that's what my mum said!

This post is nothing without a suitably explosive video!!! Where are The Mythbusters when you need them? Enjoy!

Is a 10kA breaking capacity sufficient for such a pack one wonders? The 200A MCBs fitted to my Liyuan 280Ah packs are also 10kA. I'd possibly want something with a bit more capacity as the last chance saloon. I'm looking at RT36-00 fuses as being more available here than the preferred...

Yup, add me to the list. I just got two of the Liyuan 280Ah 48V kits, great quality and not silly money. I have 32 cells which will fit that are currently as a "naked" 2P16S arrangement (they do have separators). I'm going to order another pair of boxes for them. That would place all my cells...

Whilst waiting for your loop tester could you let us know the make and model of your inverter, someone may have actually measured the standby drain. You did verify that your ordered loop-tester does to DC current, not all do!

El-cheapo PowMr 60A works well enough except it tends to "leak" when the pack is full.

It's driving the input of an MPPT so it could possibly be a kick since these things have inductors (ok not very big ones), maybe an inverse diode would help. I have suitable diodes in stock so I could bung one across and see if it still dies.

I have an array of 3S2P x 380W panels, Voc 48.71V Isc 10.05A So worst case should be Voc 146.13V and 20.1A. This array is being switched by an SSR - DD 220VDC x 100A this "should" have no issues with the energy involved. SSR is mounted on the recommended "100A" heatsink using heat-transfer...

Let's not lose sight of my earlier post - Energy storage in a bedroom????

Hmmm, I had massive fun with my Korean ex on a recliner! Note that it was in the lounge mind!

I'm a hater of extension leads too. But I'm a bigger hater of any form of energy storage bigger than a smartphone in a bedroom!! (and I think carefully about smartphones too, but mainly coz the ruddy things pling and ring at the most inopportune moments). Even the very safe LiFePO4 can go...

Would adding a meaty Schottky diode in series with the battery output connector mitigate the issue? It would of course affect the charging profile somewhat, but not as much as letting out the magic smoke from an incorrect connection. Do note that testing a single unit with an incorrect...

This came just at the right time for me :) I've just acquired 32 x 280Ah CATL LiFePO4 cells from an estate clearance. These were manufactured in June 2019 (genuine QR codes) and have been in dry (tropical but not climate controlled) storage in their original packaging since. I've measured a...

I buy them in bags of 100 "just in case", then use two! That reminds me, I used my absolutely, very last MC-4 connector yesterday, luckily it was of the correct sexual persuasion!

Yup ^^^, me too!! It's the "reverse-illusion" that gets me. Let me explain, an "illusion" is when you see something that's not there, the "reverse-illusion" is when you know damn well something is there, but you just can't see it! For example, I just put that small screwdriver down on my...

A number of local sellers here in sunny Thailand are selling Deye SUN-5k-SG01LP1-EU for about 43,000Baht other sellers have the LVtopsun SUN-5K-SG03LP1 which looks to be the same/similar unit for about 38,000 Baht. From the photos the units are "identical". A few sellers are advertising the...

Yeah, I'm in that boat too. I'm on a project in Cairo (Metro Line 4), I "started" in February and the Contractor (Thales) are now talking about an "initial" meeting with them mid-May! No wonder it took them 2,000 years to build the pyramids (the site-office has views of the pyramids to...

Saw this, thought of this thread, sorry ...

Meanwhile in the UK we use sheep. Baa. https://www.fwi.co.uk/livestock/how-solar-panel-diversification-is-working-for-a-sheep-enterprise "Agrivoltaics" is definitely a growing idea, if you don't completely cover the area with panels you can grow shade-loving plants underneath.