Schematic for EG4 off-grid system. I think I'm going to pull the trigger soon and buy parts.

[thomBangor]

After lots of feedback from this forum, I think I'm going to go with this design.

If you find any holes in it please let me know.

 

[thomBangor]

 

[stienman]

The ATS will go between the inverter, panel, and subpanel, not just the panel and subpanel.

For the inverter to ATS run use conduit so you can replace the wires later with heavier gauge wires as you upgrade without digging another trench.

 

[thomBangor]

The ATS will go between the inverter, panel, and subpanel, not just the panel and subpanel.

For the inverter to ATS run use conduit so you can replace the wires later with heavier gauge wires as you upgrade without digging another trench.

I don't quite understand. Is there a 2nd ATS, or do I have it in between the wrong objects?

 

[thomBangor]

The ATS will go between the inverter, panel, and subpanel, not just the panel and subpanel.

For the inverter to ATS run use conduit so you can replace the wires later with heavier gauge wires as you upgrade without digging another trench.

Like this maybe?

 

[thomBangor]

I have revised my diagram. If I understand right, the inverter goes on the ATS 'main power' and the grid/panel goes on the ATS 'emergency power'. My subpanel/appliances are on the 'Load'. Does that sound correct?

 

[stienman]

Yes, the ATS chooses the power source, then feeds it to the subpanel. The new diagram is better.