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can we convert 3-phase system of AC circuits into single phase system?
- Anumehana (age 17)
Sure, it's done all the time. I'm not sure what the system is in India, but here I think it works this way. All three phases are carried by wires between houses. Two of the phases are sent to each house, with different houses getting different ones. Within the house, some circuits run off one phase, some off the other. In other words, you just don't use all three phases on any particular circuit.
Special circuits for high-power items work off the difference between two of those signals. The voltage between any two of the three phases is sqrt(3) times as big as that between any one of the phases and ground. You can draw a nice little phasor picture with ground as a dot in the middle and the three phases as dots at 0°, 120°, and 240°, equidistant from ground.
(published on 03/04/2011)
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