Magnum inverter, Yamaha Generator

hbski wrote:

You're kidding right? If not then:
You might want to read the Magnum inverter manual. The MSH-M inverters are specifically designed to add load support of the inverter to an incoming AC signal to provide extra AC power when the shore power connection (whether generator or utility) cannot provide enough amps.
also might want to look at the hundreds of you tube videos of people paralleling dissimilar inverter generators.

Good answer but for the wrong reason.

Where did I say that it is not totally possible; based on how OP was trying to do like hooking up an autoformer in series with inverter etc.

Of course it can be configured to have and inverter or shore power or inverter- generator to function in parallel connection. (Read my last paragraph.)

What you intentionally omitted is, the configuration that would essentially (possibly) require all three power sources as OP had indicated.

You can parallel generator and inverter as long as they can be synchronized in terms of frequency and potential. In the case of AC from utility, frequency doesn't need to be monitored because we know it is delivered at 60Hz no matter which campground you are.

Voltage may drop but frequency would pretty much stay the same. This is one reason we can't control an AC motor speed by using a simple rheostat unlike DC.
The feasibility of paralling two different brands of gennie is attainable thus synchronizaton can be achieved. Making the governor controllable and thus enabling us to control the speed of the engine to maintain the frequency of the AC output.