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Tzortzakakis Dimitrios[_2_] Tzortzakakis Dimitrios[_2_] is offline
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Default 280V motor on 230V circuit


Ο "James Sweet" έγραψε στο μήνυμα
news:WMGTj.5083$ch1.2983@trndny09...


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Nope. LV (low voltage)230-V in Europe is just sufficient for 1 km
distance. MV (medium voltage) 20 kV for 60 km. HV (high voltage) 150 kV
for 220 km. EHV 400kV for 500 km with stability issues. 110 volt is so
low you need a transformer outside each building....



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Tzortzakakis Dimitrios
major in electrical engineering
mechanized infantry reservist
hordad AT otenet DOT gr



Learn the system before you criticize it.

It's not 110V, it's 240V, we simply split it with a grounded center tap
which gives 120V between each side and neutral, or 240V between the sides.

I'm perfectly aware of this, only in theory, though, as I've never been in
USA. I have worked, though in the decommisioned US base in Gournes, really
impressive your distribution systems:-)
And in Europe we have 400 V (3 phase) line to line voltage. It's 230 line to
earth. Large motors and conditioners use 3 phase. Normal residence is 40 A
230 V single phase, or for energy hogs 400 V 3 X 40 A 3 phase..
There's no transformer per house, except rural applications. Generally
5-10 houses are on each transformer, sometimes more. The problem with long
runs is that the voltage fluctuates substantially with large loads such as
central air conditioning. Standard North American residential service is
200 Amps 240V, I gather this is quite a bit larger than typical European
domestic stuff, so stretching it over 1km distance would require
prohibitively large cables or suffer from wide voltage swings. Makes more
sense to run 7200V down the street and locate a smallish transformer near
every half dozen houses.