Bixard

I am running all my circuits from the Essentials Load side of the inverter. I dont want to draw any power from the grid directly to my loads. I will be using the grid to charge batteries if needed. The switching I am refering to is an automatic switch that I has been essentialy wired backwards. It is intended to used for backup power. If the grid goes down it switches to battery/generator circuit. However I am using it in reverse. If my Solar/Batteries dont have enough power or something fails, it will switch my house back to grid power. Currently my electrician bonded neutral/earth at my first the junction panel which splits power to the solar/battery room and my main house panel upstairs. There is no neutral coming from the grid. So currently the bonded neutral is passing to the solar room and back to this junction box and going upstairs to my house panel. The automatic switch has seperate neutrals for grid and backup(Inverter Load in my case). So currently I have it manually switched to grid power. Solar/Batteries have not been powered up yet. The DEYE has interanal neutral bonding, so I believe we need to do nothing. If grid power goes down the DEYE will internally create a bond and the system will not hiccup. Essentlal we are just trying to figure out what is best for all the equipment in the house/Distillery. There is no safety concern for grid, since there is no neutral leaving the house. It does not exist from our network poles.

Hello All, as the title states, I have not neutral coming from the grid. Half of my house is old wiring where electrical sockets have two wires and the "neutral" wires connect to ground in the main panel. After a major remodel of the kitchen and prep for solar the other half of my house as well as wiring to my distillery is up to date. Currently all the new wiring is bonded at the main panel neutral bus is bonded to ground bus. I have 3 Deye 12kw 3phase inverters I am about to bring online. They have interanl bonding in island mode,(which is how I intend to run). My question then is where is the best place to do my bonding? (Note: all my loads will be connected to backup side of inverter) Should I bond the incoming line from the grid and let the loads switch bonding. I think this seems unecessary. Should I continue to have a permenant bond on the load side as it is currently wired? In Slovakia, most houses also do not have a ground rod and rely on ground coming from the grid. However after discussion with the electrician who did my remodel he suggested 2 ground rods spaced a few meters apart and tied to the system. So that is what I have done. I have 2 copper coated rods less then 1 meter from incoming grid power and the room where all the inverters and battery are located. The electrician has been helping me sort through and decide how I want to run the solar but we are both unsure what is best for the bonding since we do still have some old wiring in the house. Any insight you all could give would be great.

Thank you @GreenFields for this. I think this will give me more to think about and answered some questions about settings. To clarify, I intend to put the entire house on backup load and keep the distillery as non-essential/house load. If there is a power outage, I am not worried about the distillery. We have fairly stable power in Slovakia and when the power does go out, it is usually only for a few hours. Nothing in the Distillery will be affected. I have started to look into the Time of Use settings. My goal is to never use grid power in my house. I have several friends in my local area that have much smaller systems then I have, and have been able to get about 90% of their power from Solar and Battery throughout the year. We over-sized our system significantly to account for the distillery loads when cooking, and will likely need to pull from the grid on brew days only. At least that is our intention. Thank you again. Your explanations make sense and I feel a bit more confident we will get to where we want. I hope to get everything install next month. I will be traveling for the next few weeks, but plan to start immediately when I get back. I am sure I will have more questions along the way. Below is the basic setup I was sent from the factory for reference. I built a dedicated room in our space for the equipment with ventilation. I am excited to get started.

Thanks, I have done a lot of research over the last few days. Gone through the manual, went through forums and Reddit. I just can't find anything that is quite like how I want to set my system up. I am asking for advice not really for a pep talk to go do more research. I understand I need to use the CT's in the correct direction, and that they need to be located in the right place. I have read through many topics on all the different "brands" made by the DEYE company. I have a local guy also helping me and he suggested I post to forum as neither of us are sure which direction to go. I thought maybe someone out there in the ether has done it before the way I want to set it up. EDIT: I should have mentioned this in my original post. In past life long ago, I was an electrician. The wiring, breakers, panels, etc, I have a good understanding about. I have no concern over the actual installation process.

Hello, I ordered and just received a complete solar system from SunArk for my house/distillery in Slovakia. 30kw capacity of panels, and 6 200Ah batteries. I did a bit of research before purchasing and thought I had everything thought through but now I am not sure. Slovakia has pretty strict rules on grid connections and I do not plan to be officially connected to the grid to sell power back to the grid. My plan was to only use grid power to supplement the distillery and charge the batteries if needed. My inverter setup is 3 DEYE SUN-12k-SG04LP3-EU units. I wrongly assumed I could setup the system in a SBU mode and now I am not sure how I should manage the loads. I want to reduce the risk of even sending back a small amount of power to the grid. My thought now is that I should run the whole house on the Backup Load output and only run the Distillery on the GRID/House Load output. My reasoning is that I believe the system size is more then large enough for running my house and should not need supplemental power from the grid. The distillery is a small commercial distillery but more on the scale of large hobby. The auxiliary power needed for the distillery is minimal, however the Still itself has 3 7kw electric elements, but will not be at 100% for more then an hour or so each time it is used. When the system is up to temp the power will be reduced to 1-2 elements. Another note about the operation is that we will only run the still 1-2 days per week in the fall and possibly less during the rest of the year. I am not sure which Zero Export setting would be best to use or if my thinking on which load outputs to use is right. I orginally thought I would have all outputs on house load, but I would like to keep the whole house operational even if there is a grid power outage. I was hoping I could run it in "island" mode and use a mechanical switch to gain power from the grid to supplement, but I know realize this system is not really designed for that. I would appreciate any advice you may have about this.