3000W Chinese Gensets Info.

"...Last night we tested it with some assorted loads:
it ran a box fan fine, it ran a hair dryer on both low and high
without any problem. It struggled to run a vacuum cleaner, but the
RPMs did eventually settle out after about 5-10 seconds and it ran OK.
It will not run a Craftsman portable 6 HP 33 gallon air compressor at
all.

"The generator would not run the vacuum and hair dryer together,
either. The whole thing would shake like a paint mixer and the engine
RPMS were erratic, just like when the air compressor was hooked up.

a 6hp is that peak surge or running, thats is 5000+ watts
how big was the vacuum, 3hp shopvac = 2226 running watts, start up surge could be 5kw

"With no load, on 120V setting, the generator was producing a pretty
steady 13.9 - 14.2 amps. The fan as a test load had a negligible
effect on the amperage read out; the hair dryer test would drop the
amps to around 13 even; and the vacuum would drop it to about mid-10s
to low-11s. The vacuum and hair dryer together would pull the amps
down to mid- to high-8s, but again, the shaking and erratic RPMs meant
the unit was not functioning properly."

Shouldn't the 30A plug be producing nearly 30A, not 1/2 that? And why can't a 4000W surge/3500W service rated generator run a vacuum and a hair dryer at the same time? If it can't run those two, how can I expect it to run our TT's A/C and fridge at the same time?

where? what wire? did you read those amps, the more load the more amps
it sounds like you were reading the power to ONLY one load
as you added items/load the power available for the load you where reading went down because the other loads where using power

fridge on electric from the genny ? terrible waste of gasoline , leave the fridge on propane, and let the genny have that 300-500 watts of power available for other things, same goes for the Water Heater. set it to propane because the WH has a 1500w heating element, using a 3kw power unit to try an run Everything in the RV on electric is NOT efficient and does NOT work very well, and I don't know anybody that would run the vacuum and hair dryer at the same time, (maybe IF DD was drying hair while mom wanted to vacuum , but thats very unusual), the converter will always be using some power so that has to be subtracted from whats available

3kw EXAMPLE: "for US" the batteries are low in the morning and converter is drawing max power,
so converter & coffee maker are the only major items on, plus one or two CCFL lights,
heat IF needed will come from propane, not electric, WH off or on Propane, fridge is always on propane, IF its hot 12v fans will be on, A/C will have to wait until the coffee is made and BIG point here..until the converter has run at least an HR and has reduced its power draw.. converters are NOT power efficient.. a converter putting 50a/700w into the batteries is using over 900w to do so.
900w for the coffee & 900w for the converter = 1800w , so NO morning A/C or morning Electric heater, at this point/time of day .. even the hair dryer will push a 3k portable over the limit using full heat, and on the edge using low heat.

its all about power management, not torture testing with a 6hp load!
even a pair of 2kw hondaUI's would not work well with some of these combined loads