Folks (Will), about to settle on an approach and I have read a bunch and also watched the EG4 6000xp video as well as the compare with the 18pv.
Goal - take most of my house circuits off grid power - but do not plan to net meter:
- I have 2 water heaters installed in line (a 20 gallon 120v and a 40 gallon 240v)
- 240v loads (40 gallon water heater, clothes, dryer, range and hot tub) will stay on grid via main panel - WH shut off if all goes as planned
- 120v loads moved to a transfer switch subpanel that will be feed by the inverter
As I can use my 120v WH as primary when I want to, having 240v split phase is really optional as I don't intent to be able to cover 100% 24/7.
I like that the 6000xp is an updated model and that has the breakers internal to the unit.
I don't like that the unit doesn't have surge on the individual L1/L2 legs beyond the 3,000 watts each.
Plan to have 2 5,000 watt PV strings regardless w/ 15-20kw bank.
EG4 6000xp w/ 8kw max, 4 solar hours a day at 80%, I think I'll get 25kw per day (17 amp useable)
EG4 3000-48 w/ 10kw max, 4 solar hours a day at 80%, I would have 33kw per day (18 amp useable)
Cost of 2 3000 units ($675) vs 1 6000xp ($1,400) basically same, but add I know then I have the added costs for wiring and breakers.
If 240 split phase isn't needed, would I be better off with 2 EG4 3000-48 units in parallel with the appropriate PV and battery breakers?
I also like the 2 unit set-up in case one goes down, I can reconfigure the wiring at least to get by, but the newer 6000xp unit looks enticing.
Pros of 2 unit in parallel vs 1:
- more solar collection (up to 5kw per day)
- redundancy to reconfigure if needed (for backup / emergency use)
Question: with the combined 6000kw, do these units allow for surge to 12kw?
Pros of 1 larger unit:
- less complexity for setup and wiring
- built is breakers
- lower total cost (when adding wiring & breakers needed in other setup)
Seems the lack of surge on each leg (L1/L2) is the biggest draw back of the unit.
Thanks