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As one of the most common examples for offgrid inverters there would be Victron, depending on the models you could even hook up a generator to charge the batteries, connect grid tie inverters to your offgrid system,..

Hi, as a german electrician with NH-Fuse switches from Wöhner in my 48V pv system I might be able to answer your questions. The fuse holder you have is for the size NH000 and NH00 (Gr00). It goes up to 160A per fuse. The larger fuses (200A, 355A) are likely NH1, NH2 or NH3 (bigger holders). You...

I own a victron Multiplus II 48/5000 that switches over in <20ms and I also have a Victron Multiplus 24/800 that also switches over in less than 20ms (and has saved my Servers from countless power outages). Both Multiplus'es have integrated chargers and changeover switches and at least for the...

I do regret that I cut my 40U EMC rack into pieces a couple years ago, that thing was a 300kg steel beast with a weight limit of 1.8 Tons, that would have made a damn nice Battery rack

But careful, those cheapo chinese no name 200A polarised dc breakers are probably more dangerous than helpful

Does someone has experience what happens if I connect two MPPT Trackers in parallel on a single string of PV modules? I have a single 250V string of panels and use my inverter (with mppt tracker) so it doesnt put any power in the grid, I want to use parts of the especially in summer overproduced...

Paralleling fuses is not the best idea as no 2 fuses have exactly the same resistance, so you always have a fuse carrying a higher current than the other one, meaning one will fail more likely. Then there will be an additional amount of time it takes for the second fuse to blow, which leads to a...

Yes, the red tab on top is the indicator that the fuse has blown. On that ETI fuse you also have the red dot on the front, if its blown the rered dot will disappear

Most DC circuit run rather high currents, for a low resistance connection you need a lot of surface are, much better given by a ring terminal than a bare screw terminal

You dont calculate with the acutal voltages (25.6V) but instead with 24V or 48V to have some security

Just as a sidenote, before buying anything else, please show me what you want to buy and what you want to do with it so that I can tell you if its the right thing or not ;)

Don't parallel them, it just makes things messy and problematic. 1500W / 24V = 62.5A (without your factor the best fuse would be 63A) Times 1.25 would be 78.125A so the 80A fuse is your friend.

Each battery should have one fuse to the main busbar, every inverter should have one fuse to the busbar.

I would recommend getting a larger fuse size (6000W/24V (excluding conversion losses) is 250A, so at a minimum I'd use a single NH1 holder (up to your mentioned 355A).

I am building an agm charging system using a 480W 48V meanwell power supply (that has constant current so no resistor etc needed) but I will add a simple arduino or esp driven pwm mosfet to limit the power going into the batterys (higher pwm signal, more on time, more current, in my test setup I...

If anyones interested, I "solved" the problem by going the way of connecting my charger to the output of the inverter, of course the efficiency sucks even more that way but as its a whole "proof-of-concept" installation that doesnt matter right now. I am building myself an intellegent charging...

I've read a bit more, so gL is an old curve (for cables) replaced by gG (for general purpose). The first g is for "general purpose", there could also be an a for "accompanied fuse") the second letters could be: G - general purpose M - electric motors R - semiconductor protection B - mining Tr -...

Here is a more up to date table: https://www.ezitown.com/nh-ceramics-low-voltage-fuses-fuse-bases-fuse-rail-fuse-puller/

gG is not the dual rating for ac and dc but instead shows the tripping curve. gG is for standart uses, gL is slow-fast (sounds stupid but means that it is slow for low overcurrents and very fast for higher ones) A proper NH glove costs ~35€ here in germany, for your 24V system a simple NH grip...

Thats what I'm doing currently, when the flier is at 3.6V all the others are at 3.3/3.4V (if I remember correctly, havent looked into the bms for a while)

4/0 is ~105mm2 so for 250A nominal you would need at least 2 of them in parallel for plus and 2 for minus (depending on the wire length). But you can easily use 2 cable lugs on the one Bolt, just put the 2 larger flat sides together when bolting them on.

The datasheet from siemens lists that model fuseholder for 440V DC

Hi, we have 6 shortly used 18W 12 to 24Vdc led tubes to sell, they were used in an offgrid installation for ~4 months. The tubes are 1200mm (120cm) T8 tubes from GEO-Technik (https://www.geo-technik.de/en/Lamps-Bulbs/LED-Lamps/LED-Tubes-T8/LED-Tube-T8-1200mm-4Ft-12V-24V-DC-18W-G13--2345.html) We...

Tried that with an Eaton ECO 1200, Toasted it. Edit: Btw, If anyone (from germany) needs 2 Eaton Eco ups boards, one 800VA one 1200VA, cant remember which one exactly I toasted and which one worked but I gave up, contact me

The small Multiplus has a VE.Bus port, but you usually need an expensive adapter to connect it to usb and even then I can't say what you can read out or do with the interface. Would be simpler to put an ESP in to measure battery voltage and maybe a DC current sensor or shunt to calculate...

I've watched the Videos from Andy from OffGridGarage, JK "fixed" the bms problem by having it reset to the lowest voltage battery type, thats not really a fix in my opinion. Is there a long term solution planned to solve this?

Andy from OffGridGarage had a 200A JK BMS running at a bit over 200A and then open under that load and it immediatly blew at least one of the mosfets. For my battery pack, I will go with the JK BMS Mosfets AND a high current relay

I need to release my anger again. Today I further disassembled my problematic "100Ah" 48V battery from (today's Name) "PAPOOL LiFePO4 Official Store" (they keep changing names more often than I change my underwear). The battery had some problems from the beginning, i.e. one cell that is in a...

Yes, why not? get a USB-C power delivery board that can do 100W charging and work with the output voltage of the bluetti