So this little upgrade isn't going to be for everyone. I road race and do trackdays so I camp in the pit area of race tracks quite a bit during the summer. The problem this creates is they never have 30amp plug-ins so you have to use an adapter and you can't run too much at once or the breaker trips. I was talking with a buddy of mine that does this kind of stuff for a living and he came up with a brilliant idea.
We installed this power relay behind the main breaker panel. If an outside power source is applied to it the relay trips and routes the A/C off the main breaker and to the outside power source.
We used a marine receptacle with a standard male outlet connection and mounted it right next to the main shore power connection.
With the cord pulled out the relay flips back to its normal position and everything works as it normally would. When it's all buttoned up it looks like it came this way from the factory.
I realize for most this isn't necessary but for me at the racetrack this will be a life saver. Now I can run the microwave or our mini Keurig coffee maker without having to turn the A/C off first. If anyone else is interested let me know and I can post the part number for the relay, marine receptacle and schematic.