saaf@joker.optics.rochester.edu (Lenny Saaf) (09/13/89)
I know that in this country most homes receive 2 110 volt AC lines with different phase and a common line, allowing us to get 110 off either side or 220 across both. I know this is called (some number) phase, but will refrain from guessing to avoid flames. Is this wiring scheme also used in 220 volt land? That is, can homes access 440 volts from their service drop? I will summarize the responses. Thanks in advance, Len -- ------------------------------------------------------------------------ | Len Saaf, The Institute of Optics, Univ. of Rochester, Rochester, NY | | Internet: saaf@joker.optics.rochester.edu Bitnet: SAAF@UOROPT | ------------------------------------------------------------------------
BHB3@PSUVM.BITNET (09/13/89)
Well a know common househould service is called "single phase" in references to electric motors.
hakanl@loglule.se (H}kan Lennest}l) (09/14/89)
In article <SAAF.89Sep12215929@joker.optics.rochester.edu> saaf@joker.optics.rochester.edu (Lenny Saaf) writes: <Stuff deleted> >Is this wiring >scheme also used in 220 volt land? That is, can homes access 440 >volts from their service drop? I will summarize the responses. <Stuff deleted> Here in the nordic countrys we have a three-phase system. All households are connected with three live "phase" wires plus one "zero" and possibly one ground. You obtain 220 volt between "zero" and one of the phases. And 380 volt between two of the phases. I am no expert on this, but I think that this is the general idea. / H}kan
pcf@galadriel.bt.co.uk (Pete French) (09/15/89)
In article <SAAF.89Sep12215929@joker.optics.rochester.edu> saaf@joker.optics.rochester.edu (Lenny Saaf) writes: >Is this wiring >scheme also used in 220 volt land? That is, can homes access 440 >volts from their service drop? I will summarize the responses. British mains is 3-phase, but a house only noramlly gets a single phase supply. larger buildings may have 2 or 3 phases comming into them. From these you can access 415 volts. These are used for machinery in places lie factories etc... -Pete. -- -Pete French. | British Telecom Research Labs. | "The carefree days are distant now, Martlesham Heath, East Anglia. | I wear my memories like a shroud..." All my own thoughts (of course) | -SIOUXSIE