Well, first off thankyou everyone for the quick responses! I've finally found a forum with active members that offer up solid ideas and input!
In many ways I think what were working on is a ghetto UPS, but from my understanding of how a UPS works there is no input to allow charging of the battery from a secondary source besides main power?
I like Carl's idea of building a relay outlet box but I still don't fully understand; 1 outlet will be for main grid power and the other outlet for battery power coming out of the inverter.
Also, I didn't know what a grid tie inverter was until posting! They look great and already have my mind wandering how to incorporate one into my next project.
Thanks again