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Index][Thread Index] Re: IS 240VAC two-phase - NO Original
poster: BunnyKiller <bunikllr-at-bellsouth-dot-net> Tesla list
wrote: >Original poster: dhmccauley-at-spacecatlighting-dot-com
>240VAC is correctly denoted as SPLIT single phase. It is NOT
two phase. >It is simply a centertapped, 240VAC single phase
line from a single phase >Two phase denotes a phase angle
difference of 180 degrees. The sum of all >phases in any system
must always equal 360 degrees. The standard home >electrical
system in the US is two phase, 180 degree difference( two times
>180 equals 360). Each phase is 125 volts RMS to neutral, and
250 volts RMS >from phase to phase. when testing the house
wiring with my O-scope .. the 120V shows a single sine wave ...
when testing the 240 system it shows 2 sine waves ( had to use
both leads) so how does a single phase get "split" via a center
tap transformer to produce the opposed phases ???