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Re: Single or double pole mains switch in USA?

From John S <Sophi.2@invalid.org>
Newsgroups sci.electronics.design
Subject Re: Single or double pole mains switch in USA?
Date 2016-11-15 17:00 -0600
Organization A noiseless patient Spider
Message-ID <o0g403$do3$1@dont-email.me> (permalink)
References (8 earlier) <srhf2c9e3tl0kmb5t47u7b9655bdr5lsfq@4ax.com> <o08i16$33e$8@dont-email.me> <6ush2c173uqejf0a5kca0c04oqim5a3v1s@4ax.com> <o0dibb$ndk$2@dont-email.me> <28nk2c5eauhcgn7hkbs1r6b4rnv2emnd30@4ax.com>

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On 11/14/2016 6:56 PM, krw wrote:
> On Mon, 14 Nov 2016 17:46:27 -0600, John S <Sophi.2@invalid.org>
> wrote:
>
>> On 11/13/2016 5:14 PM, krw wrote:
>>> On Sat, 12 Nov 2016 20:10:40 -0600, John S <Sophi.2@invalid.org>
>>> wrote:
>>>
>>>> On 11/12/2016 7:56 PM, krw wrote:
>>>>> On Sat, 12 Nov 2016 19:48:13 -0600, John S <Sophi.2@invalid.org>
>>>>> wrote:
>>>>>
>>>>>> On 11/12/2016 3:20 PM, M Philbrook wrote:
>>>>>>> In article <o07naa$33e$2@dont-email.me>, Sophi.2@invalid.org says...
>>>>>>>>
>>>>>>>> On 11/12/2016 11:03 AM, M Philbrook wrote:
>>>>>>>>> In article <xn60nt2y7f.fsf@delorie.com>, dj@delorie.com says...
>>>>>>>>>>
>>>>>>>>>> John S <Sophi.2@invalid.org> writes:
>>>>>>>>>>>>> 2 phase? Please educate me on this. I know that single phase and 3 phase
>>>>>>>>>>>>> are common, but I have never encountered 2 phase.
>>>>>>>>>>>>
>>>>>>>>>>>> really?
>>>>>>>>>>>>
>>>>>>>>>>>>  two leads 90 degree shift..
>>>>>>>>>>>
>>>>>>>>>>> How often have you encountered a mains supply with 90 degree phase
>>>>>>>>>>> shift, smart ass?
>>>>>>>>>>
>>>>>>>>>> Nikolas Tesla invented it long ago.  Just because it isn't used for
>>>>>>>>>> mains *now* doesn't mean he can't know what it is.
>>>>>>>>>>
>>>>>>>>>> Also, it's what stepper motors use, and we encounter those every day.
>>>>>>>>>>
>>>>>>>>>> Also, he didn't mention "mains" in that follow-up.
>>>>>>>>>>
>>>>>>>>>> Also, replying to pedantry with jackassery is lame.
>>>>>>>>>> (whereas the opposite is just plain fun ;-)
>>>>>>>>>
>>>>>>>>>  actually there is an old place near me that uses 2 phase power./
>>>>>>>>>
>>>>>>>>> Jamie
>>>>>>>>>
>>>>>>>>
>>>>>>>> Does the old place generate its own power? The power company does not
>>>>>>>> provide two phase power.
>>>>>>>
>>>>>>>  Yes, they have both a water generation plant and scott connection
>>>>>>> transformers from commercial 3 phase to fill in when they need it.
>>>>>>>
>>>>>>> Jamie
>>>>>>>
>>>>>>
>>>>>> So it is not 2 phase, it is 3 phase with a lame connection.
>>>>>
>>>>> No, he said 2-phase.  The Scott-T is used to transform three-phase, as
>>>>> supplied by the power company, into the 2-phase this old installation
>>>>> requires.
>>>>>>
>>>>>> Please explain how it is used without the fill-in. Two phase motors?
>>>>>> Note that three phase is completely different from two phase. The phases
>>>>>> are 120 degrees apart in 3 phase (with a common reference which requires
>>>>>> 3 wires) whereas 2 phase is 90 degrees apart (also requiring 3 wires),
>>>>>> even according to you. Why would they use a Scott-T when 3 phase is
>>>>>> already available. Pretty stupid -- just like you.
>>>>>
>>>>> Because "he" needs two-phase and only three-phase is available from
>>>>> the power company, thus the Scott-T.  He is pretty clear, here.
>>>>
>>>> What is the advantage of two phase power?
>>>
>>> It exists.
>>
>> Now you are just being an argumentative ass. Many things exist that we
>> do not use because they are not practical.
>
> Idiot.  They exist because they were practical.

And how long ago was that, Idiot?

Sure. About 60 or so years ago. For a couple of years, maybe. Try buying 
2 phase power from the power company now. I know 2 phase power can be 
created with a Scott-T so you will have to buy 3 phase power first and 
then spend more money to create the Scott-T. What will that get you 
other than loss of money?


> You didn't even know what a Scott-T was.  Turn in your degree now.
>

An ass-umption of yours, dip-shit. Turn in your brain now. It has little 
to offer.

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Thread

Single or double pole mains switch in USA? Syd Rumpo <usenet@nononono.co.uk> - 2016-11-08 09:41 +0000
  Re: Single or double pole mains switch in USA? jrwalliker@gmail.com - 2016-11-08 06:10 -0800
    Re: Single or double pole mains switch in USA? John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-08 06:29 -0800
      Re: Single or double pole mains switch in USA? Martin Riddle <martin_ridd@verizon.net> - 2016-11-08 11:55 -0500
        Re: Single or double pole mains switch in USA? Martin Riddle <martin_ridd@verizon.net> - 2016-11-08 11:56 -0500
  Re: Single or double pole mains switch in USA? Martin Riddle <martin_ridd@verizon.net> - 2016-11-08 11:58 -0500
    Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-08 11:05 -0600
      Re: Single or double pole mains switch in USA? krw <krw@nowhere.com> - 2016-11-08 12:48 -0500
      Re: Single or double pole mains switch in USA? jurb6006@gmail.com - 2016-11-08 10:46 -0800
      Re: Single or double pole mains switch in USA? M Philbrook <jamie_ka1lpa@charter.net> - 2016-11-08 17:22 -0500
        Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-11 20:22 -0600
        Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-11 20:26 -0600
          Re: Single or double pole mains switch in USA? DJ Delorie <dj@delorie.com> - 2016-11-11 22:07 -0500
            Re: Single or double pole mains switch in USA? M Philbrook <jamie_ka1lpa@charter.net> - 2016-11-12 12:03 -0500
              Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-12 12:34 -0600
                Re: Single or double pole mains switch in USA? M Philbrook <jamie_ka1lpa@charter.net> - 2016-11-12 16:20 -0500
                Re: Single or double pole mains switch in USA? pedro <me@privacy.net> - 2016-11-13 09:32 +0800
                Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-12 19:52 -0600
                Re: Single or double pole mains switch in USA? Jasen Betts <jasen@xnet.co.nz> - 2016-11-13 05:11 +0000
                Re: Single or double pole mains switch in USA? M Philbrook <jamie_ka1lpa@charter.net> - 2016-11-13 13:07 -0500
                Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-13 16:44 -0600
                Re: Single or double pole mains switch in USA? krw <krw@somewhere.com> - 2016-11-13 18:13 -0500
                Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-12 19:48 -0600
                Re: Single or double pole mains switch in USA? krw <krw@somewhere.com> - 2016-11-12 20:56 -0500
                Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-12 20:10 -0600
                Re: Single or double pole mains switch in USA? Jasen Betts <jasen@xnet.co.nz> - 2016-11-13 04:57 +0000
                Re: Single or double pole mains switch in USA? upsidedown@downunder.com - 2016-11-13 11:07 +0200
                Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-13 09:57 -0600
                Re: Single or double pole mains switch in USA? krw <krw@somewhere.com> - 2016-11-13 18:14 -0500
                Re: Single or double pole mains switch in USA? upsidedown@downunder.com - 2016-11-14 21:19 +0200
                Re: Single or double pole mains switch in USA? krw <krw@somewhere.com> - 2016-11-14 19:54 -0500
                Re: Single or double pole mains switch in USA? upsidedown@downunder.com - 2016-11-15 09:55 +0200
                Re: Single or double pole mains switch in USA? Glen Walpert <nospam@null.void> - 2016-11-15 17:55 +0000
                Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-14 17:39 -0600
                Re: Single or double pole mains switch in USA? krw <krw@somewhere.com> - 2016-11-14 19:55 -0500
                Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-14 17:46 -0600
                Re: Single or double pole mains switch in USA? krw <krw@somewhere.com> - 2016-11-14 19:56 -0500
                Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-15 17:00 -0600
                Re: Single or double pole mains switch in USA? krw <krw@somewhere.com> - 2016-11-15 19:20 -0500
              Re: Single or double pole mains switch in USA? upsidedown@downunder.com - 2016-11-12 20:53 +0200
              Re: Single or double pole mains switch in USA? jurb6006@gmail.com - 2016-11-13 10:50 -0800
                Re: Single or double pole mains switch in USA? jurb6006@gmail.com - 2016-11-13 10:58 -0800
            Re: Single or double pole mains switch in USA? John S <Sophi.2@invalid.org> - 2016-11-12 12:31 -0600
  Re: Single or double pole mains switch in USA? krw <krw@nowhere.com> - 2016-11-08 12:46 -0500
    Re: Single or double pole mains switch in USA? jurb6006@gmail.com - 2016-11-08 10:40 -0800
      Re: Single or double pole mains switch in USA? krw <krw@somewhere.com> - 2016-11-08 19:13 -0500
  Re: Single or double pole mains switch in USA? whit3rd <whit3rd@gmail.com> - 2016-11-08 10:50 -0800
  Re: Single or double pole mains switch in USA? Syd Rumpo <usenet@nononono.co.uk> - 2016-11-09 14:06 +0000
  Re: Single or double pole mains switch in USA? Jasen Betts <jasen@xnet.co.nz> - 2016-11-12 07:05 +0000

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