3000W Chinese Gensets Info.

MrWizard wrote:

The reason I know this? I had to use this generator as emergency power after hurricane Fran in 1996. I could not find a 240v plug anywhere in Raleigh, every place was sold out. So, I discovered the two 120v outlets were 180 degrees out of phase, and made an adapter that used two 120v plugs going to a 240v socket. I was able to run my water pump!!

240 volts yes , OUT of PHASE ....NO NO. NO

the 240 volt home line power is , SINGLE phase 60 cycle, the transformer is center tapped to provide 120v single phase.

on the generator, when in 240 mode the windings are series and represent a CT transformer, when in 120 ONLY MODE, the windings are parallel

on a generator that has no switch, and has 240 & 120, it is just like your home service.. it is still single phase the (2) legs are NOT out of Phase.

I could take 10 door bell transformers, parallel all the inputs into just 2 wires, now take all the outputs and string them in series, one after the other like batteries, door bell xf are 28 v, but i would have 120 in and 280 volts out, if tapped the center connection between #5 & #6 outputs, i would get 140 volts to either end, 280 end to end,

nothing is OUT of PHASE, you tapp the winding at a specific point to get the voltage you want

there are only TWO types of service in the USA (except under highly unsual condtitions ) single phase resedential 240/120 and 3phase industrial

industrial high voltage 3 phase is reduced to 460 3phase at the xtransfomer at the building

there is no 2phase, no 180 degree out 240/120

stop saying that

Ok, it was inverted. :) You can call it what you want, no need to burst a blood vessel.

I'm sorry, my electronics background makes me want to relate the waveforms to each other by phase. If you look at the two outputs on an o'scope, they appear to be 180 degrees out of phase. This is how a push-pull amplifier works, one side is inverted so the signal appears to be 180 degrees out of phase.

Cheers,

Bob R.

*** On edit *** I should have said "This is how a bridged output amplifier works....