This year I was able to join the ranks of Yet Another Generator User in my neighborhood. We live in a fairly rural area of Southern Maine so we were black for 8 days this season. As a telecommuter this was particularly painful. While the furnace is 120V the well is 240V and the furnace will not run if there is no water service.
When we were dark last season I found myself whining to my father about no power, heat, water. He informed me that he had an old Chicago Power 40411 portable generator he no longer used because it made so much noise all the other campers kept giving him dirty looks and rude comments whenever he fired it up. A couple weeks later I found box with generator parts in my driveway. It took some fussing but I finally got it running. Cost: three weekends of small engine repair and my pride.
On the first day of darkness this season my wife asked why I had not actually hooked up that generator so we could have heat and water. Um, so a few hours later and a trip to HD I added a HEMA L14-30 outlet near the cellar window and 20ft of 30A extension cord. Cost: $130 in parts, 5 hours, my manhood.
The key here is that the generator has a 4 connector outlet and is rated at 5.5kW @ 240V. This allows me to run both sides of the circuit breaker panel. So long as I remember to open the main breaker switch. Fortunately my main switch as 3 contact (red, white, black) so when it's open I'm isolated from the grid. I'm told this is not always the case so if you're going to back feed your circuit breaker panel like I did you need to check this or have an electrician install a cross over switch. Cost: ~$300 installed. While I don't need this I'm having my electrician friend come over and help me put it in so I'm code compliant.
I can't stress the safety of this enough. Back feeding a circuit panel is handy but can be dangerous. I put the plug I use on a separate thermal magnetic breaker with ground fault. The generator runs outside, under an awning behind the shed so we don't get exhaust gas back in the cellar. I'm installing a separate cross over switch so I can't get electricity from it unless I'm isolated from the utility grid.
That said, this little puppy has enough umph to run the well and furnace and a few lights. I get about 3 hours per gallon of gas which is less than ideal but this is a backup system that might see 2% usage. Unfortunately the power is not clean enough to run my home office. I have 4 systems on a 2kVA UPS to do Enterprise Software Development. Unfortunately, the UPS didn't like the generator's power and kept shutting off when the well kicked in. I ended up using a little Honda generator to drive my office that week.
Every time I see one of those 22kW propane generators with auto start outside HD my heart skips a beat and my trousers get a little tight but then I look at the price tag and think; Yea, for a few days a year I need this I can live with my hand me down generator a little longer.
My advice. keep an eye on craig's list this summer and pick up a cheap used generator. Get your electrician friend to help you install a cross over switch and the big extension cord. Shove the thing in the back of the garden shed and sleep easier knowing it's there.