![]() Once it reaches its destination area, the voltage is stepped down to between 4kV and 35kV. This voltage is then stepped up to anywhere between 150kV and 800kV, to reduce power losses when transporting electric current over long distances. It is used for power transportation because electricity needs to be transformed several times during the transportation process.Įlectric generators produce voltages of about 40,000V, or 40kV. If the phase difference is 0°, then we say the two waves are in phase.Īlternating current (AC) is the way electric power is transmitted from generating facilities to end users. These waves are considered to be in antiphase, as their values will always have opposite signs. ![]() If two waves are plotted together, and one wave reaches its positive peak at the same time that the other reaches its negative peak, then, the first wave will be at 90°, while the second wave will be at 270° this means the phase difference is 180°. A complete cycle of a sine wave is divided into 360°, starting at 0°, having peaks at 90° (positive peak) and 270° (negative peak) and crossing the start point twice, at 180° and 360°.
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