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  2. High-leg delta - Wikipedia

    en.wikipedia.org/wiki/High-leg_delta

    So if A–B, B–C and C–A are all 240 volts, then A–N and C–N will both be 120 volts, but B–N will be 208 volts. Other types of three-phase supplies are wye connections, ungrounded delta connections, or corner-grounded delta [2] (ghost leg configuration) connections. These connections do not supply split single-phase power, and do not ...

  3. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    120/208 V: 18: 21: 277/480 V: 19: 22: 347/600 V: 20: 23: 240/415 V-26 Non-locking connectors. NEMA non-locking connectors all use blades of various flat and folded ...

  4. Camlock (electrical) - Wikipedia

    en.wikipedia.org/wiki/Camlock_(electrical)

    120/208-volt wye and 240-volt delta Colour Use ... White: Neutral (grounded conductor) Black: Ø 1 Red: Ø 2 Blue: Ø 3 277/480-volt wye or 480-volt delta Colour Use

  5. Electrical wiring in North America - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring_in_North...

    Lighting and general purpose receptacles are at 120 volts AC, with larger devices fed by three wire single-phase circuits at 240 volts. In commercial construction, three-phase circuits are often used. Common 3 phase configurations within a building are 208v/120 wye, 120/240 center tapped delta and 480v/277v wye. Lighting is usually fed by 277 V ...

  6. Mains electricity by country - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity_by_country

    120 V 240 V 120/208 V 277/480 V 120/240 V 240 V 480 V 60 Hz NEMA 5-20R outlets, which are similar to type B but have a T-shaped neutral slot, are sometimes used for higher current 120 V equipment (up to 20 A). U.S. Virgin Islands: A B NEMA 1-15P NEMA 5-15P 110 V 190 V 60 Hz Uruguay: C, F, I, L 230 V 400 V 50 Hz

  7. Three-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Three-phase_electric_power

    Three-phase transformer with four-wire output for 208Y/120 volt service: one wire for neutral, others for A, B and C phases. Three-phase electric power (abbreviated 3ϕ [1]) is a common type of alternating current (AC) used in electricity generation, transmission, and distribution. [2]

  8. SAE J3068 - Wikipedia

    en.wikipedia.org/wiki/SAE_J3068

    Also, SAE J3400 electric vehicles in North America are required to support power transfer under PWM-CP at 277 VAC. [ 6 ] Under SAE J3400 and SAE J3068 EVSE cannot use PWM-CP controls when nominal system voltages exceed 480Y/277 VAC (single-phase 277 VAC). digital communication (e.g. LIN-CP) shall be used when these voltage limits are exceeded ...

  9. Mains electricity - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity

    The modern combinations of 230 V/50 Hz and 120 V/60 Hz, listed in IEC 60038, did not apply in the first few decades of the 20th century and are still not universal. Industrial plants with three-phase power will have different, higher voltages installed for large equipment (and different sockets and plugs), but the common voltages listed here ...