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In alt.engineering.electrical Tzortzakakis Dimitrios
wrote:

| A shame that Tesla won the infamous "battle" and we don't have DC:-()
But
| then, we would be having a power plant at each neighborhood, instead of
the
| 300 MW ones.

And the latter make easy terrorism targets, too.

I cross my fingers that terrorists get no electrical engineering degree:0

| I know, I know, my answer was a bit provocative:-) And of course there
are
| DC regulators.... You're talking about DC generators;the one a 300 MW
uses
| for excitation is 220 V, 1000 A DC and probably shunt field. I have seen
| here in some machine shops the old type welding generator, which is a 3
| phase induction motor coupled to (usually) a compound field DC
generator,
| which provides the welding current. The modern ones are, maybe, not
larger
| than a shoe box and powered by a higher wattage 230 V 16 A receptacle.
| (Usual receptacles are 230 V 10 A;16 A for washing machines, dryers and
the
| like).

You don't use 400 V for anything heavy duty like an oven?

Yep. All ovens sold in EU are wired for 3 phase, 400 V with neutral (and
earth, goes without saying). Just if you connect it on 1 phase (as usually)
you use a bridge, and connect all L1-L2-L3 to the one and only hot. 230 V is
powerful enough for almost everything in a house, only large airconditioners
are 3 phase, and all industrial motors, even if they are 1HP:-) (




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Tzortzakakis Dimitrios
major in electrical engineering
mechanized infantry reservist
hordad AT otenet DOT gr
NB:I killfile googlegroups.