Re: IS 240VAC two-phase - NO

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: dave pierson <davep-at-quik-dot-com> 


>Two phase denotes a phase angle difference of 180 degrees.

        Sometimes.

>The sum of all phases in any system must always equal 360 degrees.

    Really?
    Nikola Tesla invented a system at 90 degrees...
    It was his first, and, at the time, widely used.
    (OK:
    Thats 90 + 270 so it sill equals 360...
            And I suspect there is none left.)

>The standard home electrical system in the US is two phase, 180 degree 
>difference

    THAT is a matter of  some debate.
    (hint:
    Add two 180 degree sines.
        Observe result.
            zero.

        Observe result across outer end of home 240.
    Uhmmm.

    ITS 240!!!

        Check phasing implicit in transformer center tap.

    AS VIEWED FROM THE 240, the phasing is zero.

    (looked at with a 'scope it tends to be _interpreted_ as
    189 SINCE THE SCOPE IMPOSES A 'ground' refernce to the
     centertap/neutral/ground.)

best
     dwp