Three-phase electric power facts for kids
Three-phase electric power is a method to generate, transmit and distribute AC electricity. It is the most common method in power systems to transfer power from generation to load. Three-phase systems are usually more economical to be used than equivalent single-phase or double-phase systems.
Images for kids
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Three-phase transformer with four wire output for 208Y/120 volt service: one wire for neutral, others for A, B and C phases
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Three-phase transformer (Békéscsaba, Hungary): on the left are the primary wires and on the right are the secondary wires
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A delta-wye configuration across a transformer core (note that a practical transformer would usually have a different number of turns on each side).
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Three phase plug commonly used on electric stoves in Germany
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Three-phase electric power Facts for Kids. Kiddle Encyclopedia.