Thomas,
In the USA three phase is only brought into industrial
areas (commercial area). Very rare to see any three phase
power in the homes.
All the houses here are wired for 220V single phase.
Typically ovens, Air Conditioning, and clothes dryers are
220V, the rest of the house being 110V.
The 110V is really a "split" 220V with a branch on both
sides of a "common". It is a very odd way of doing things
as to "balance" the load you really should have an equal
amount of load on the two sides of branches, as current
should not be flowing in the "common branch".
Oh, I do have three phase motor's in my shop for the
milling machine and metal lathe. Trick there is to use
a switched capacitor to start the motor, then once it
is rotating it will spin along nicely on the single phase
power (at reduced power ratings). Doesn't work for
something like a welder.
Cheers,
Tom Walter
P.S. My electric vehicle used a three phase motor! ;-)
DC (288V) was supplied by batteries to six IGBT switches,
which created the three phase power to the trucks motor.
http://www.austinev.org/evalbum/121.html to give an idea.
Alas, truck stayed with Motorola. Still sitting there. ;-(
Thomas - Sweden wrote:
> The few suggestions I can give on MIG welders in general
> (as someone who welds a few hours every day) is to get
> a 3-phase current machine. We have 220-230 Volts on
> 1-phase and 400 Volts on 3-phase in most parts of Europe.
> I think USA are 110 Volts for 1-phase and 220 Volts for
> 3-phase.
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