Reddit mentions of Reliance Controls 31410CRK Pro/Tran 10-Circuit 30 Amp Generator Transfer Switch Kit,Gray

I got a reliance. I like it. Very easy to install and comes with a video.
https://www.amazon.com/gp/product/B000HS2L3O/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

I just did this a few months back (same issue with the well pump). Was originally planning on hiring an electrician to do it, but after a few youtube videos, realized I could do it myself. Very simple - hardest part was figuring out which circuits I wanted to include and wrestling 10-3 UF-B wire. The electrical part was easy.

First question you got to figure out is what kind of switch you are going to use. If you have some free breaker space in your panel, you can get an interlock switch. This is the cheapest way to go and you could power your whole house with this method (if you generator is up to it). Downside is you have to be careful about balancing your loads.

I didn't have any space in my panel so got one of these badboys. Super easy to set up and use. Lets you choose up to 10 circuits that you want to be run off the generator. It includes a bunch of documentation on how to calcualte and balance loads for your generator to decide which side you hook each ciruit up to. Also nice because when the pwoer comes back on, you will know. I very highly recommend this box and company. Great instructions and customer support, very easy to install. Seems like really solid hardware, too. They sell these at the Lowes near me in case you can't wait for amazon shipping.

In either case, I also highly recommend the remote L14-30 input box (its included in the kit that I linked to). Have it mounted somewhere outside you house where the generator will be running. You can run the aforementioned 10-3 UF-B cable out to it. Its a lot cheaper than buying a super long equivalent extension cord to get the generator a safe distance away from your home, and you also don't have to wrestle that same cord every time you need the generator (those things are heavy AF and the last thing you want to deal with in the cold/dark/rain/snow/wet/wind that is happening when you lose power).

You should be fine. Just be sure to turn off all breakers that you don’t need. The interlock I plan on installing soon includes wire that I can fasten directly to my intended breaker.

Interlock

All you really need is a transfer switch of some sort and an AC inverter hooked up to your car's 12v system. Just don't draw more power than the car's dc-dc converter can make.

Get this: https://www.costco.ca/Firman-H08053-Hybrid-Series-Dual-Fuel-Portable-Generator.product.100364803.html

And this: Mroinge Automotive Trickle Battery Charger Maintainer 12V 1A Smart Automatic Battery Charger for Car Motorcycle Boat Lawn Mower Sla Atv Wet Agm Gel Cell Lead Acid Batteries https://www.amazon.ca/dp/B010NRKERI/ref=cm_sw_r_cp_apa_i_7rojDbGT3EC43

Then a 30lb tank at costco filled for 85$

Then get this:

Reliance Controls 31410CRK Pro/Tran 10-Circuit 30 Amp Generator Transfer Switch Kit with Transfer Switch, 10-Foot Power Cord, and Power Inlet Box for Up to 8,000-Watt Generators https://www.amazon.ca/dp/B000HS2L3O/ref=cm_sw_r_cp_apa_i_3nojDb6PD5Q25


Should only cost $1000 to install from a contactor or electrician.

Is your pellet stove your only source of heat? Do you turn it down at night? If your pellet stove pipe going out of the house has some rise to it, for the most part it still has some ability to get the smoke out due to chimney effect. If your pipe is just sticking straight out of your wall , you might want to extend the pipe up on the outside of the house to encourage more draft.

you can use a battery back up (like the kind for a computer) - they have an alarm on them and will beep while in battery mode, so that might be able to wake you up in the night to alert you that the power went out.

If the power does go out enough at your place; i would highly suggest adding a generator plus transfer switch. I have one. it is not automatic and i would have to hook up the generator to the house, flip the transfer switch etc. but i made sure the outlet my stove uses is also one of the covered circuits.

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Example Transfer Switch Kit - this is the one i used. Very happy with it. They do have other options. I have a well pump that needs 240. Just about everything in my home is covered except for the AC (i have a separate boiler for heat and hot water that is covered) and i have a sub panel for an addition on my house. If i need power for the addition i can run an extension cord.

https://www.amazon.com/Reliance-Corporation-31410CRK-10-circuit-Generators/dp/B000HS2L3O

Personally, i dont run my stove when i am sleeping or not home. I have hydronic heat for the house, the stove is to help keep the uninsulated part of the house warm. But i understand your concern and needs if it is your only heat.