Powering a standby generator?

   / Powering a standby generator? #11  
I dunno, gents, I can think of a some advantages the pto generator has. The first is high capacity at low initial cost. Roughly speaking a pto generator is about 1/4 the price of a comparable stand alone, plus it weighs half as much, plus you'll be using the tractor's muscle to move it around instead of your back. This is especially true at higher capacity: A 13kw pto generator weighs less than 200#, while a 10kw portable weighs close to 500#. Those little wheels it comes equipped with don't look so good at my age.

What's it going to be used for? Any internal combustion driven generator is going to use gobs of fuel if it's on continuously. Let's assume, then, that this sort of powerplant is for intermittent or emergency use. If it's for emergencies, then the vast majority of the time it's just going to sit there. Motors don't do well just sitting. They still take maintenance. My generator (yes it's a portable!) hasn't been run in two years. I need to drag it out and make sure it starts. A snow storm is not the time to find out it won't. Actually we're trying to pare down the number of indepent motors we have for this reason, for example we're going to convert to a pto log splitter.

Let's say you do have an emergency. In our household at least, there'd be no necessity to run the generator 24/7. Turn it on and get everything done, wash clothes, wash bodies, cook food, run the freezers, HVAC, pump water, etc. A large pto generator would have the capacity to do this. Then shut down the generator. You might do this twice a day, let's say 4 hours total. In two weeks you'd only have 56 hours on your beloved tractor. When the emergency is over you park your insurance policy in a clean dry place until next time, no maintenance required.

Let's say you do have to run that tractor 24/7 for a few days to keep the natives from getting restless. Most of the time the generator and therefore tractor will be lightly loaded, which translates into a lot less wear than plowing a field at its limits. No dust or mud, either.

I'm not saying portables don't have their advantages, too. The small ones are cheap to buy, very portable and adequate for most of our needs. We bought an 1800W Coleman to run power tools and provide house power in a pinch. Granted, not much power, but it would be a whole lot more than nothing. We could run our freezers, water pump, and water heater until the grid is back up. If I wanted something big, though, I'd take a hard look at a tractor driven unit.
 
   / Powering a standby generator? #12  
Faced with the same choices, I went with a stand-alone unit.

Having a well, you run out of water really quick unless you have power. Real pain to start-stop-start-stop, so I want to just keep it running. Couldn't live with the insane number of WOT hours on my machine. Loaded or not, you have to turn certain RPM's to keep power at the right frequency.

And I'm confused on the cost. 1/4 the price of a portable? Haven't researched recently, but I recall the PTO generators being a little expensive. Am I off?

I run my generator about once a month, usually because of an outage. If the thing messes up, I'll just get a new one...a 5500 runs everything but the air conditioners, but if I get another I'd be in the 8K to 10K range so things don't blip when I fire up the microwave! Don't want to mess around with the little ones in the house and that is just 'one of those things' that warrants a suitable investment.
 
   / Powering a standby generator? #13  
Stackwood said:
... A 13kw pto generator weighs less than 200#, while a 10kw portable weighs close to 500#. Those little wheels it comes equipped with don't look so good at my age...

My 15 Kw (continuous) generator weighs 450 lbs dry and probably right up there in the 550 -600 lb range fueled & ready to go.

I consider this a great big advantage. A couple of high school kids with a pickup truck are not going to make it disappear.

As far as moving it goes, I has an eye at the balance point and a 3' length of chain lets me lift it with one of the hooks on my FEL. I didn't even bother to put the little wheels on it, they didn't look very good to me either.

So, I move it with the tractor. Thats what they are designed for. The difference with the PTO unit is that I put the stand-alone generator down where I want it and drive the tractor off to do something else. You just plain can't do that with a PTO unit.

My 6 kw generator fits in the bucket and goes wherever the tractor can, no problem. I chain it to something solid to prevent it from walking away some fine evening...
 
   / Powering a standby generator? #14  
Good points all. Sounds like it depends on local conditions & circumstances. I guess if we wanted simple lives, we'd live in apartments rather than out in the country. But you know, I'd go stir crazy in three rooms with nothing to do.

BTW, I took the weights and prices from the current Northern Tool catalog. Your mileage may vary.
 
   / Powering a standby generator? #15  
I agree with you stackwood, one less engine to look after, that is why I just bought a 50kw surge 25kw continous pto generator. one of my clients had it for a few years and sold it to me for 1200$ and it is like brand new a Generac I thought that was a deal. My electrician friend coming out monday to wire my house for it. It is a big insurance policy for my wife and I. It will be there when i need it and i want have to crank it once every week or so.
 
   / Powering a standby generator? #16  
If I came across a deal like that I'd jump at it. That's a lot of capability for the money. Sounds like an ideal emergency backup. Can you run your heating system with it?
 
   / Powering a standby generator? #17  
I agree with CurlyDave all the way through this thread. I picked up a 12kw tri fuel unit a few years back. Paid under $2K for it. I have it connected to the natural gas line, but it can be removed and moved easily if I want it somewhere else. Mine is a little large for either of my buckets, but could easily chain it in and lift it.

The thing I don't like about gas is having to constantly refuel. Been there, done that. A 7+ day outage with a gas powered generator is why I switched to a tri-fuel generator. No need to worry if it will run out of gas!!!

Mine is not used enough to worry about the added noise or fuel used while it spins at 3600rpm, but if I could have gotten a good deal on a unit that ran at a lower speed I would have done it. It seems like a lot of money can be spent on generators that get used very infrequently. In my case I could have gotten by a bit cheaper with a smaller tri-fuel unit, but this size allows me to run the well pump, refrigerators, freezer, most of the lights and TV sets, etc. So I have about 80% of my house powered by the generator (it does help that my house house is energy efficient).

The biggest problem I have with a PTO generator is that it prevents me from using the tractor and keeping the house heated at the same time. If we lose power in the winter it is also a safe bet that the road is buried under some snow and ice and I need to help clear that to get out.
 
   / Powering a standby generator? #18  
Yes if i needed it to Stackwood it would run my heating system as well, but luckily i will not need that as i have gas logs. I am looking forward to my electrician coming over monday and getting me hooked up. Then i will really be ready.
 
   / Powering a standby generator? #19  
I agree with Bob, when I need a generator, I most likely need the tractor to clean up what ever caused the need for the generator. Move downed trees etc. By the way, I did a test on my refrigerator and it normally is on about 50% of the time. I have also seen places that say do not use food if the refrigerator has been off for 2 hours and another says 4. In either case you are not going to just run a generator just 3 or 4 hours a day if you want to keep food cold. I actually have an inverter to run my small refrigerator and freezer during the night. This is kind of extreme as I have 4 golf cart batteries to power the inverter.

The PTO genertor can make a good generator for when you need a lot of power to run your well for example. You might want to consider a larger well tank. Mine is about 40 gallons and we can go several hours without running the well usually and still have water pressure.
 
   / Powering a standby generator? #20  
My gas genny sets right in the FEL... only 3500 watt but does everything I need to do. Like soundguy said once... I don't want a tractor running day or night alone.

mark
 

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