I would like to get some advice.
I am going to upgrade to a Hybrid inverter (Victron 12V 3000VA w 2x120v) to enable me to function on < 50A but still run all my systems (within reason) as needed.
One issue I have is the Intellitec 750 EMS. My understanding is that when I am on Single Phase Pole power (15A - 30A), The Intellitec enables Load Shedding and if I am at 30A, it will shed loads if I exceed 30A. I want to be able to modify this behavior (As my inverter will be able to Load Assist up to ~55A). After some thought, I have come up with the idea of forcing the Intellitec to think its getting power from the genset. This would be done by providing 12V power to pin 2 of the Intellitec display panel. I am considering using a Switch along with an Isolation relay (like is used in Tow Vehicle Brake Light wiring kits that will take a signal from either tow or motorhome brake and pas it to the lights). My thought is that the system should then appear to be in genset mode when the "Force Genset" switch is turned on and the Inverter is turned on (I would use the 12V relay on the inverter to determine the inverter is on) . I believe this would enable the Intellitec system to remain installed and function normally, but allow me to use the Power Assist of the Victron Inverter.
One issue I see is that in Genset mode, The EMS would not limit my power until it exceeded 8K watts (66A) and the 30A (or 15A if mooch docking) + hybrid inverter would only provide 55A total (40A if I was getting 15A from shore power) and the inverter would shut down if I exceeded this level. I am willing to live with this as I am mostly looking to just run 2 ACs and maybe a Microwave while on 30A shore power).
I will have a large (1140AH) LFP battery bank, and understand this still has its limits. Not trying to run everything at once, but want to be able to do laundry and run an AC and not have the AC shut off if I nuke a cup of coffee (Yes the EMS will shed my front AC before my W/D!).
Do you see any problems with my plan, or have suggestions? Again my main purpose is to allow me to not be limited to 50A shore power, if I want to run 2 ACs + a Microwave or Dryer. (BTW I will have the AC soft starts installed as part of this system). My Loads are approx. as follows:
2 ACs at 15A each (once they heat up)
Convection oven at 12A
W/D at 13A
TV at 3A
Base Load at 5A
Thanks!