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Wow, I wouldn't want something like that in my house... ?

@Vigo The switch will see from my battery bank 28V max, so the 48V rating might be adequate. It also has a rating of 300A continuous which is 3 times the 100A max of my setup. Interestingly, if you have a look at back side of the switch the two studs are marked Input / Output. (?) @Phil.g00...

One last question. This is a two pole breaker switch. I suppose it has two arc diverters, one in each pole. If I connect it like you said in order to work bi-directionally for a single line, when the left arc diverter works properly during switching under load, wouldn't the other arc...

But then the other half might start a fire!

@Phil.g00 "A polarized DC MCB cannot be used to even break load current in an application where current can flow in either direction wired as shown" Is that because of arcing when trying to break the circuit under load? "However, if 1 leg, say the "+" was wired the right way and looped back...

That GoodWe inverter looks very nice at least on paper. I am not sure though how they are getting away with the fan-less design. Microinverters that use a similar design (fanless with big heatsink), do not seem to last very long. On the other hand its very efficient and this might play a role...

The voltage rating of this MCB is 600V and I will only use 28V max between the inverter and the battery. So its better to use it to break only the positive, correct?

I might consider batteries in the future. I want to utilize as many hours as possible, that is why I will use two 500w panels. (they will not be shaded) Do you have in mind any good off-grid inverter with a fast built in ATS? Thank you.

10 years? Wow! Thank you for the suggestion, its definitely a candidate and especially because I was looking for one with little noise. I assume that this one will work with your adapter & the JK BMS.

I will not use a battery. Transfer time from solar to mains and mains to solar. (switch time) It does not have an MPPT, I know but I will not need it I think. Its voltage input range is from 38V to 66V and the solar panel Vmp is 39V. Is there a problem with that setup?

So, will the following wiring be a safe configuration for my setup and the specific DC breaker? (hybrid inverter + battery = bidirectional current path)

Can something like this disconnect the battery under load without any problems? https://energymonkey.co.uk/product/m-series-mini-on-off-battery-switch-with-knob-red/

Ok, I see. "How do you wire it right as a 2 leg ( + & -) MCB bi-directional current setting?" You tell me... Is it possible?

I'd better connect only the positive wire to the breaker and use a fuse as well. I need the negative always connected because I will also use another switch parallel to the positive connection together with a 20 Ohm power resistor to precharge the inverter capacitors before switching on the...

Ok, now I am confused! :confused: Just found a site that was selling this DC breaker and it says: "This is a non-polarized circuit breaker, the input and output directions of the circuit breaker can be interchanged. Suitable for 12V, 24V, and 48V Battery Systems up to 600V DC Maximum."...

Just test it with a steel flat ruler and it is indeed magnetic in both sides, upper rear side part near the pin hole. The ruler almost sticks to it. Does this mean that its actually polarized?

I will use it then as a polarized one and connect only the positive wire the way you pointed out. You have been really helpful! Thank you!! Next investment will definitely be a good fire extinguisher... :)

"If you get a 3-position, should be good for capacitor precharge." Indeed, I was thinking of that as well. MidNite would be a good solution, but I am not sure if you can find it in Europe.

Hmm, so the inverter might cause a significant voltage drop. I would need then an MPPT inverter with batteryless operation mode. The LV1012 seems to do that but its for the US market. Any other way to achieve the same result? Separate MMPT controller being able to work without batteries +...

Hello uksa007 , I am planning of replacing my Phocos B 3kW inverter with the Phocos H 5kW. I will be making a 16S battery bank and I will buy the JK BMS B2A20S20P. It looks like that the Phocos inverter can communicate using the Pylontech protocol over CAN bus, but I am not sure. My...

Hi, I currently have a small 2kW solar array in a series/parallel configuration as in the diagram below, together with the Phocos 3kW hybrid inverter and a custom 6.7kW LiFePo4 battery. Everything is working fine but I need just a bit more solar power for the perfect balance. The solar...

Because it will produce even lower power at 2743 W. I also want to minimize the cable loses and voltage drop. It has a 7.7V margin with the Hyundai and 13V with the Sharp panels. How much lower should the array total Voc be in order to compensate for freezing temperatures?

Hi, I've just bought a new Phocos B series 3kW hybrid inverter to replace my MPPSolar 2.4kW. I run a constant load of 400 watts during the day. In the house I have the Owl watt meter connected at the main entry point of the grid supply and it uses current clamps to do the measurement. When...

Hi, I have been using for 6 months now the MPPSolar PIP2424MSE1 hybrid inverter without any issues. It is connected to two 500W solar panels in series and AC power in. The maximum load is about 350Watts but it is non stop. Recently the AC power output switched off suddenly and it happened...

What about the noise? Are they noisy?

Thank you for the link. Yes, I've seen the video from Andy about the new JK BMS and I agree that they should not have released it yet with such a firmware. Anyway, the price is too high for me, that is why I am considering the B2A20S20P. But this adapter is not cheap as well. What is the...

Nobody wants to destroy its equipment but I want to squeeze out of the system as much power as possible because I do not have more space for solar panels. I found this online calculator: Max Voltage Calculator In my area we don't get temperatures lower than -5C and according to the above...

Current will be passing through both sides simultaneously. During the disconnect, arcs will be created in both chambers. The same time one side quenches the arc, the other will divert it away from the quencher. So maybe there will be a small damage to the other side which will become worse...

Hello, I live in Greece and here we have a lot of Sun which I would like to use to power my PC and some peripherals. The maximum power consumption of my setup will not exceed 320 Watts at any time. I will use two Eco Delta Mono Shingle 500Watt panels (ECO-500M-72SB) which look promising, at...

I am trying to decide between these two hybrid inverters. I already have the Phocos 3kW which has been working fine until now with no issues at all but I need more power. My PV installation is 3kW and I also have a DIY battery from 16 280K EVE cells with a JK BMS. Growatt...