Marksmith4x4

Ok .. after much back-and-forth .. here is my almost final wiring:

Wow - long read .. but worth it. That settles it for me. Going Option 4. Thanks for everyone's input.

Thanks, I read on another post "NE Bridge in SA not allowed with relays due to our SANS regulations". Which is against what the manual tells us to do. sans 10142-1 7.12.3.1.2 In an installation that is supplied from a combination of transformers and alternative supplies located near to each other, the neutral points of each of these items SHALL be connected to a single earthed neutral bar (see P.1). This earthed neutral bar shall be the only point at which the neutral of the installation is earthed.

Thanks - I added option 4 as you have described

Thanks for the input .. but what is the correct answer then?

Using a Sunsynk 5kW as grid tied system .. which of the following is most accurate? Sub DB receives PE from Inverter Load Sub DB receives PE from Grid Sub DB receives PE from Grid & Inverter Load N bonded to Grid PE Sub DB receives PE & Inverter Load N bonded to PE None of the above

If there are any qualified electricians that read this - I would love to have your feedback on DB board wiring. Would it pass SANS 10142 inspection?

Found a simple document for EN Bond. In case someone needs it - attached. SS EN Bridge.pdf

Scratch that - Removed load PE + Passed PE directly through + Bonded load N to PE

Question around the EN-Bridge Continued .. Based on the manuals instruction then this should be correct?

Question around the EN-Bridge: Sunsynk manual states: "Do not connect this terminal [PE] when the neutral wire and PE wire are connected together." Does this mean that I need to remove the load PE connection completely? OR Have a second contactor that only passes PE on load when ATS is NOT engaged?

Thanks - that's probably a good idea - never thought of that.

Hi All, My first stab at wiring my system. I will update this post with the latest version of this diagram as I learn more. Hopefully this will help the next person. This is where I need your help - To learn more!!! Please critique the diagram and point out any mistakes I have made. Wiring diagram made using Drawio Feel free to reuse in your own project The software is free - available @ https://www.diagrams.net/ I have attached a jpg version and the drawio version for you to use in your own project Check back to see if version number changes to see if you have the latest Updates v1.2 Updated EN Bridge (hopefully correct) WireDiagram_v1.2.drawio