Without residential generator transfer panels you have no real means of getting power from your residential generator to your entire house. There are certainly alternatives, but these are illegal. Worse still, they are unsafe.
Feeding electricity back into the utilities using your own wiring system is called back-feeding. It works, but usually not for long. This is because you will be sharing the power from your generator with everyone that is on your electrical grid. This inefficient use of the power that your generator is able to supply will have you back in the dark in no time at all.
Once the utility company has dispatched a repair person to correct the electrical failure it is highly unlikely that he or she will be expecting the electrical line to be live. You may have several neighbors that do not expect this as well. The potentate for deadly electrocution is high, and you can face fines, jail time and law suits for back-feeding your power in any fashion.
The best solution for connecting your generator to the power supply is transfer panels. They are safe, relatively inexpensive and offer you a smooth transition from darkness to your own back up power supply. Because the energy that the generator is creating is contained within your own home, you do not have to worry about supplying power to the entire electrical grid that you share. This means that you can use your generator as long as you need it without worrying about running short.
Automatic residential generator transfer panels allow for a seamless transition. The panel detects the utility failure and switches the generator on. The power supply is then transferred to the generator until the utilities have been restored. Once restored the power than switches back to the utilities and the transfer panel puts your residential generator into cool down mode.