On Thursday, February 18, 2021 at 10:29:25 AM UTC-5, Peter W. wrote:
We have a small 30A @ 240 VAC emergency generator. When it is in use, we run it to a 30A double-pole breaker in the panel, shutting off the main breaker at the same time. That will cover the freezer, refrigerator, boiler a few lights and other miscellaneous items as needed, without having to wire or unwire anything. The feed from the generator is 6/3 SJO cord, and the unit itself is grounded to a properly installed 8' ground rod. The three times we have had to use it for more than a couple of hours, it has worked nicely. Usually, we run a single-ended extension cord to our neighbors for their refrigerator as well.
Peter Wieck
Melrose Park, PA

I assume the 30A double-pole breaker is wired to be a transfer switch, else, bad things will happen when the power comes back on.
In your configuration, wont you need to drop some load at the load center as I assume all the devices in a 3-4 bedroom house would exceed the power output of the generator? Just re-read the post...30A@240 VAC...probably not..