3000W Chinese Gensets Info.

professor95 wrote:
Floyd,
IMHO, from five years of working with these toys, ANY generator under 5,500 watts will NOT be able to sustain a 15,000 BTU A/C with a locked-in compressor for 12-16 (or more) hours in 100 degree weather without some issue with overheating or damage -- Chinese, Japanese, inverter, synchronous, etc. The load is too great for the cooling design and rising oil temperatures along with temperatures inside the alternator itself. All will rise to dangerous levels -- this is even with the genny sitting outside in open air. Of course, a 5,500 watt open frame genny with a 13 HP engine is just too darn loud for a campground at 77 dBA. Out in the lonely desert, sure -- take a 5,500 if you like.

The Champion 3,500 will run a 15,000 BTU A/C in 85, maybe 90 degree heat for 3-4 hours at continuous compressor load. It is best to set your A/C thermostat a little warmer so the compressor will cycle on and off and give the genny occasional rest breaks.

Just like your MH or TV, going up a long 7% grade in 100 degree weather at WOT when pulling a loaded camper will cause an overheated engine and tranny UNLESS the rig is over sized for the purpose. BTW - this is a good reason to respect tow ratings just like wattage ratings.

As for the 29.5 amps -- the Champion will do it. I have run the test with the genny connected to an adjustable resistance 500 amp carbon pile load cranked down to show 29 plus amps (3,540 watts). But, as I noted, it will NOT sustain it. No matter what the labels say about wattage with a 6.5 HP and 200 or so CC GX style engine figure about 2,800 watts (23.3 amps) as your maximum continuous working load. In hot, hot weather drop it down to 2,400 watts (20 amps). Also, keep in mind inductive loads are more demanding of a generator's power than resistive loads.

Still no clue why your unit shut down with two 1,500 watt heaters (3,000 watt total). Mine will run two 1,500 watt heaters at the same time (resistive load) like a walk in the park. Of course, I'm not running heaters in 100 degree weather! :) As I ventured to say earlier, you were dealing with some other problem or issue that you are not aware of.

Prof,

Great post. Folks who want the 3000w Champion to cool with a 15,000 BTU A/C now know what to expect. My only experience has been with a 13,500 roof top A/C/3000w Champion combo and never on a 100 degree day in the old MH. The Champion C46540 is now in my little genhouse/shop. In that I am no longer able to move about without great pain, it is set up so that I can sit on a stool and due some trials and play with my little Yellow and Black toy, if you want to call it by that name. Having Electric start is sure nice. Yes, I do like to see and hear what it can and will do.:) As you suggested some time ago, I ordered from Ebay the dogbone for the 240v twist lock recp't that has two 120v pigtails. So I have full use of all the AC power the Champion can produce. The 2 1500w heaters were available so are used for a test load. With 2 1500w hearter in use the gen will shut down after a few minutes. However, if I turn one of them down to medium, all is well. So yes, I agree, with my testing, the Champion is good for 2600/2800watts with no problem. For whatever it's worth. What the Champion will do using LPG is another story.