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Phases in AC refer to the number of sine waves of alternating current used to generate the average voltage. In 2 phase, two opposing sine waves are overlapped to give the average voltage delivered, eg 240V in household supplies.

In 3 phase, three sine waves are overlapped to produce a more consistent average voltage.

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14y ago
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11y ago

I believe the term 'three pole' is used for the circuit breaker that is used in a three phase circuit. The number of poles is the number of current paths broken when the breaker trips or is switched off. If you look into a circuit breaker box, you might notice the breaker for the electric stove (range) is twice as wide and the breakers for lighting, etc. This because the lights operate on 120V (in the US) which is a single pole breaker, whereas the stove (range) needs 240V to power the 'burners' If you checked the power socket for the range, you should note each hot lead is 120V relative to ground but 240V relative to the other hot lead. This requires a double pole breaker to disconnect both hot leads. A three phase circuit requires all three hot leads be disconnected and this requires three poles. Three phase power is generally not used in residential installations.

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7y ago

In electrical terms, 3 pole is a description used for a type of switch of circuit interrupter. This type of switch is used on three phase applications where the three line voltages are all disconnected with one pull of the switch's handle. In electrical terms, 3 phase is defined as generation or use of a designed supply that uses three simultaneously separate alternating currents of the same voltage, but with phase voltages spaced at 120 degrees separation from one another.

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13y ago

No of flux line producing can be the difference. And we need improved external structures to get maximum out put voltage through 3pole than 4pole.

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14y ago

One and two pole switches are used for single phase applications and a three pole switch is used for three phase applications.

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Q: Difference between 3 pole and 3 phase?
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