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  2. Split-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Split-phase_electric_power

    This three-wire single-phase system is common in North America for residential and light commercial applications. Circuit breaker panels typically have two live (hot) wires, and a neutral, connected at one point to the grounded center tap of a local transformer. Usually, one of the live wires is black and the other one red; the neutral wire is ...

  3. Phase converter - Wikipedia

    en.wikipedia.org/wiki/Phase_converter

    An American Rotary Phase Converter with a Transformer. A phase converter is a device that converts electric power provided as single phase to multiple phase or vice versa. The majority of phase converters are used to produce three-phase electric power from a single-phase source, thus allowing the operation of three-phase equipment at a site that only has single-phase electrical service.

  4. Rotary converter - Wikipedia

    en.wikipedia.org/wiki/Rotary_converter

    Wiring schematic for a simplified bipolar-field Gramme-ring single-phase–to–direct-current rotary converter. (In actual use, the converter is drum-wound and uses a multipolar field.) [2] Wiring schematic for a simplified two-phase–to–direct-current rotary converter, with the second phase connected at right angles to the first [3] Wiring schematic for a simplified three-phase–to ...

  5. IEC 60309 - Wikipedia

    en.wikipedia.org/wiki/IEC_60309

    This allows one to choose single-phase AC power at either 110–120 volts between phase and neutral or 220–240 volts between phase and phase. Since these two modes do not need three phases there is also a dark yellow-orange four-pin connector available designed for a single-phase 110–120 or 220–240 volt load.

  6. Rotary phase converter - Wikipedia

    en.wikipedia.org/wiki/Rotary_phase_converter

    Rotary phase converters are used to produce a single-phase for the single overhead conductor in electric railways. [ citation needed ] Five European countries ( Germany , Austria , Switzerland , Norway , and Sweden ), where electricity is three-phase AC at 50 Hz , have standardised on single-phase AC at 15 kV 16 + 2 ⁄ 3 Hz for railway ...

  7. Three-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Three-phase_electric_power

    A three-wire three-phase circuit is usually more economical than an equivalent two-wire single-phase circuit at the same line-to-ground voltage because it uses less conductor material to transmit a given amount of electrical power. [3] Three-phase power is mainly used directly to power large induction motors, other electric motors and other ...

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  9. High-leg delta - Wikipedia

    en.wikipedia.org/wiki/High-leg_delta

    Current practice is to give separate services for single-phase and three-phase loads, e.g., 120 V split-phase (lighting etc.) and 240 V to 600 V three-phase (for large motors). However, many jurisdictions forbid more than one class for a premises' service, and the choice may come down to 120/240 V split-phase, 208 V single-phase or three-phase ...

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