"Me" wrote in message
...
In article ,
"Ulysses" wrote:

"wmbjk" wrote in message
...
On Thu, 16 Jun 2005 15:43:10 GMT, "Pete C."
wrote:



Not necessarily. Home welding tends to be short duration. The hardware
to supply that kind of power is actually affordable, and if one is
designing the power system from scratch for what most would consider a
normal home, then the extra inverter capacity isn't a big deal. In our
case, for the house loads alone we could have gotten away with a
single SW4024 plus a transformer for the 220V loads.

How is this done, getting 220V from 110? How do you get the two "hot"
wires? Are there 2 secondary windings on the transformer? Wouldn't
they
need to be out of phase with each other?



Now here is a fellow that asks an inteligent question. If you take
a dual winding secondary with 120 Vac on each winding, feeding it
with a 120 Vac Primary, and connect the dual 120Vac windings in series
you get 240Vac. The phase is determined on how you connect the two
series windings. and they will either be inphase or 180 out of phase,
depending on the connection.

Me

Something else I've wondered about is why is it sometimes called 220, other
times 230, and also 240VAC? Do the different voltages imply single or
double phase or is it just a matter of different voltages in different
geographic locations? My little Honda generator is rated at 125 VAC which
seems to be unusual and that would give us 250 VAC if it was ran through the
step-up transformer.