I've also used a Fluke Scopemeter on my Yamaha. Very clean power, far better than a campground!
I was curious about that. I know that the Honda put out a very smooth sine wave even though it is an inverter generator. Regular MSW inverters usually put out a stepped sine wave.
So the Yamaha produces a nice smooth sine wave like the Honda?
It's interesting that neither the Honda nor the Yamaha use PSW inverters yet they put out such smooth power. Must be done through extra filtering that the stand alone MSW inverters don't have.
Who said they don't put out a PSW? Take a look for yourself...
Unfortunately, I didn't take a photo of the Scopemeter when measuring the waveform of the Yamaha. That meter belongs to work, and I don't have it tonight.
Fear not, I do have an old Sony oscilloscope. Had to dig it out, knock the dust off of it. Here are the untouched photos (only downsized), forgive the focus, I was in a rush.
This is the actual waveform of the power at my house. Slightly distorted sinewave.
Here's the actual waveform from the Yamaha EF2400iS, at idle. Nice clean sinewave, not distorted. About as clean as it gets.
* This post was
edited 12/17/07 06:37pm by 2manytoyz *
dixoncider wrote: As usual I get the piece of junk . Just get the honda
Maybe you should do a search on this forum of people having problems with Hondas. Also people that have Hondas that find that they run different speeds when paralleling. I follow all these threads, along with the ones regarding Kipor, Champion, etc.
You are the first (congratulations!!!) person I've read that's had anything but a glowing report about their Yamaha.
I'd HIGHLY suggest finding another authorized service center. Go to the Yamaha website, type in your zip code, it'll show you the ones in your area. I found 10 within a 1/2 hr drive of my house.
Some people are lucky, or maybe there's more to this story, don't know, don't know you. Maybe you're a Honda dealer!
Personally, it doesn't matter who buys what. I'm giving details about what I know, and what I've learned through many first hand reports. Take it FWIW.
* This post was
edited 12/17/07 08:16pm by an administrator/moderator *
DrBlackrose wrote: I would love to see that oscilloscope with a square wave converter. I have always wondered what it would look like.
Ask and ye shall receive!
Here are pictures from one of my many UPS units. Some have the misconception that computers require a very clean power source. Fact is, computers use switching power supplies, and convert the AC back to DC.
Note the well known brand...
Here's the actual waveform:
If you want to see the different outputs from some of my inverters, check out this link.
Towards the bottom of that page is the scopemeter showing the distorted sinewave from my house, vs the clean sinewave from my Prosine inverter. I'm going to capture the waveform from a campground one of these days, and make everyone scream.
dixoncider wrote: As usual I get the piece of junk . Just get the honda
Maybe you should do a search on this forum of people having problems with Hondas. Also people that have Hondas that find that they run different speeds when paralleling. I follow all these threads, along with the ones regarding Kipor, Champion, etc.
You are the first (congratulations!!!) person I've read that's had anything but a glowing report about their Yamaha.
I'd HIGHLY suggest finding another authorized service center. Go to the Yamaha website, type in your zip code, it'll show you the ones in your area. I found 10 within a 1/2 hr drive of my house.
Some people are lucky, or maybe there's more to this story, don't know, don't know you. Maybe you're a Honda dealer!
Personally, it doesn't matter who buys what. I'm giving details about what I know, and what I've learned through many first hand reports. Take it FWIW.
I called yahama and went to and authorized sevice center. Which is very close to my house which was one of the reasons I went with the yahama, also I have had great luck with there outboards. My experence with there generators has been poor at best. I guess its just me. I wish I would have got the honda. Nuff said
My Honda2000 will run my 13500 BTU A/C just fine. Fist time it didn't fire...the second time I ran the A/C fan first for one minute then hit the cooling mode (compressor) and it fired right up. Once the A/C was running and blowing nice and cold for a one minute, I wanted to see how much she would take. Turned on the the TV and Sat box...then a 60w light...then the inverter/charger with 5amp charging. OK, figured this has got to be it....went outside and turned the Honda2000 to econ mode.....no problems. I ran all this for 20 minuets. The funny thing was that I had forgot the furnace was running in order to create enough heat so that the A/C compressor would turn on. During this time the A/C compressor WAS IF FACT RUNNING AND BLOWING COLD.
Welp, I took the plunge.. The Yamaha is sitting in the truck as I type. I look forward to the transition from Yamaha speculator to Yamaha user.
I will update my experience for others who are in the market.
Here is a final note on why I went with Yamaha.:
Of the 3 outlets I went to, all said they did not get any reported problems or returns. The only problem that users have had, is when they run the oil too low and the user does not know why the unit shuts off.
I finally found the specs that said my A/C is a newer 13,500btu. I am very hopeful it will start with the yamaha.
Finally, thanks for all the info 2manytoyz. Your data really did sell the unit for me. I was 100% honda 2000 until I saw this thread. If you ever need a reference from Yamaha for some sort of 'sponsorship', add me as a reference =).
The problem is few roof top A/C units lack a start capacitor. A smaller generator might start the A/C unit initially, but when the compressor cycles, a smaller generator lacks the power to kick the compressor while the system pressure is still elevated. So it'll run for a while, then suddenly go into overload. VERY common complaint, search the archives. This is ultimately the reason people with a Honda 2KW already, end up buying a second one, and paralleling them.
Also, once the A/C is up and running, it is possible to start and run many other things. The overload occurs when the A/C tries to cycle the compressor once again.
During the testing of my Yamaha, I ran it for several hours with the temps in the low 90s, with zero shade. The A/C cycled on/off many times, with the usual items running.
According to Hayes Equipment, the EF2400iS was "Load bank tested to hold a 25 Amp load for up to 10 seconds. That's 3000 Watts of surge capability". They have their own load bank: Link. This is why the Yamaha will likely start any 13,500 BTU A/C unit that a 3KW generator can start.
* This post was
edited 12/18/07 10:22am by 2manytoyz *
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