RedHotSolar
New Member
- Joined
- Nov 6, 2022
- Messages
- 1
I'm looking at adding AC-coupled backup power to my house and just wanted to see if anyone had suggestions or areas that I should do more research on first. As well as a few questions.
Proposed equipment:
Questions
Thanks for any comments!
Proposed equipment:
- 2x EG4 LL V2 Server Rack batteries
- Schneider Electric Conext SW 4kW 48VDC Inverter/Charger SW4048
- Schneider Insight Home
- Future solar via Enphase IQ microinverters
- Generator breaker interlock for the main breaker to ensure the grid is not backfed
- Breaker Interlock for the AC input circuit on the inverter from the main panel and the AC output circuit to the generator input on the main panel. This will ensure when in off-grid mode the output and input of the inverter are never connected together through the main panel.
- Generator for extended power outages when solar is limited
- In the future adding an adjustable output 12-volt to 48-volt charger to charge from an EVs 12 volt system
Questions
- Are there instructions for integrating the EG4 batteries and the inverter through the Insight Home? It seems to be a supported configuration but I didn't see specific instructions.
- Does EG4 have anything written about how their precharge circuit works and how to properly use it? I saw that SOK's user manual has specific steps for turning things on but the EG4 manual makes no mention of this. I understand the basic concepts but it's surprising to me that something that seems so important would be missing from their manual.
- Any recommendations on sourcing name-brand DIN rail components? For example, I see online TOMZN brand DIN rail manual transfer switches for $20 but that seems too cheap compared to say midnite solars solution for this which includes a case that is nearly $200.
- Can I order a spare backup BMS kit? If these batteries really can last 15 years I worry that sometime in the future a component of the BMS could fail after EG4 goes out of business or stops making parts for this generation of products.
- Breakers for high amperage loads will need to be turned off when in off-grid mode
- The output rating of solar microinverters should not exceed the limit of the inverter
- Gas generator and microinverters can not both be connected at the same time
- I'm aware of the limits that a 4 kW inverter and 10kwh battery pack have
Thanks for any comments!