Well it works, tested on a solar panel.
I rigged up an 80 watt mono panel that I will not be putting on the vehicle.
The Genasun MPPT charge controller is installed under the air comprssor.
Then I just kind of stuck the grid tie in there on a kill-a-watt meter just to see if it would all work and it did.
The grid tie is on the input side of the charge controller. Once the battery is full the grid tie will soak up more power.
The grid tie is just sitting in there, its permanent place will not be in the vehicle.
With out the grid tie inverter connected it was doing this:
The genasun MPPT controller was doing its MPPT thing for sure. It had 15 volts, 3.1 amps going in from the solar panel and 12.9 volts and 3.5 amps going out.
If this were a regular PWM controller, it would be 3.1 going in, and maybe 3 going out.
Its sorcery.
With the grid tie and charge controller going the solar panel was sending 3 amps to the charge controller and 0.6 amps to the grid tie (and 0.1 amps to the fan).
With the charge controller disconnected (simulating full battery) the grid tie put out up to 30 watts.
The solar panel I am putting on the suburban are 17ocv. I reckon I will series up 2 of them for a max voltage of 34 volt, which is the max input voltage on the genasun.
This will work better with the grid tie.
I think if I put all the "12 volt solar panels" on there in parallel I am thinking that I would only get 50 watts. With the panels wired in series parallel for "24 solar panel volts" it will push more like 100+ watts on to the power grid. That is if I need more than 100 watts on my houses vampire circuit.
EDIT, the panels are actually 21 to 22 volts OCV and I wired them all up in parallel because if I put them in series they would send up to 44 volts to the charge controller which would fry it.