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Old February 21st 18, 06:26 AM posted to sci.astro.amateur
Paul Schlyter[_3_]
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Default NASA's biggest worry right now: What if something goes wrong with the Webb telescope?

On Tue, 20 Feb 2018 08:47:03 -0700, Jibini Kula Tumbili Kujisalimisha
wrote:
Paul Schlyter wrote in
:



On Mon, 19 Feb 2018 08:07:00 -0700, Chris L Peterson
wrote:
Almost every home has 220V service with 30-50A fusing. Of
course,

not
for every outlet, so it's true that a new outlet might need to
be installed in the garage.


I thought the US had 110V in their outlets. Did thar change? Did
you switch to 50Hz as well?

Most of the outlets aer 110 volts. But the service coming into the
house is always 220 volt, three phase, which is commonly split into
two 110 volt sides. (Except when there's 440 volt three phase,

which
is rare in residences.) Electric stoves and dryers (which generally
requires 200 volt, 3 phase) are common enough that pretty much all
homes have it available (I suspect it's required by building codes,
in fact).


Why are the three phases split into only two sides? What happened to
the third phase?