by St. Funogas, Survival Blog:

(Continued from Part 4. This concludes the article.)
I’ll refer the reader to My Ten-Day Test-My-Preps Adventure – Part 4 for the details of how my system works and what I am able to do with it. In a nutshell, during sunlight hours I can take the available 1,500 watts and feed them into my home/shop wiring system and run nearly everything including the freezer.
On Day One if the SHTF, the actual switchover process from grid-tie to off-grid takes just a few minutes. In a simplified explanation, I activate the SPS switch at the inverter and plug a suicide cord (male plug on both ends) into the 120-v outlet next to that switch. I plug the other end of the cord into the nearby 120-v outlet where my air compressor is plugged in. At the breaker box just above that outlet, I install a short jumper wire to connect the two bus bars. With that, the SPS back feeds electricity into the breaker panel and the system is up and ready to power my house and shop.