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2. Single-phase electric power - Wikipedia

   en.wikipedia.org/wiki/Single-phase_electric_power

   Single phase power transmission took many years to develop. The earliest developments were based on the early alternator inventions of 19th century Parisian scientist Hippolyte Pixii, which were later expanded upon by Lord Kelvin and others in the 1880s. The first full AC power system, based on single phase alternating current, was created by ...

3. Mains electricity - Wikipedia

   en.wikipedia.org/wiki/Mains_electricity

   Many areas, such as the US, which use (nominally) 120 V, make use of three-wire, split-phase 240 V systems to supply large appliances. In this system a 240 V supply has a centre-tapped neutral to give two 120 V supplies which can also supply 240 V to loads connected between the two line wires.

4. Orders of magnitude (power) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(power)

   weather: Hurricane Katrina's rate of release of latent heat energy into the air. [48] 3 × 10 14: tech: power reached by the extremely high-power Hercules laser from the University of Michigan. [citation needed] 4.6 × 10 14: geo: estimated rate of net global heating, evaluated as Earth's energy imbalance, from 2005 to 2019.

5. Split-phase electric power - Wikipedia

   en.wikipedia.org/wiki/Split-phase_electric_power

   120 V circuits are the most common, and used to power NEMA 1 and NEMA 5 outlets, and most residential and light commercial direct-wired lighting circuits. 240 V circuits are used for high-demand applications, such as air conditioners, space heaters, electric stoves, electric clothes dryers, water heaters, and electric vehicle charge points.

6. 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]

7. Mains electricity by country - Wikipedia

   en.wikipedia.org/wiki/Mains_electricity_by_country

   Type C sockets are the most frequent. Many buildings and households have double use sockets compatible with type A and C. Lesotho: M 220 V 380 V 50 Hz Liberia: A, B, C, E, F 120 V 220 V 208 V 60 Hz 50 Hz Libya: C, D, F, L 127 V 230 V 400 V 50 Hz Barca, Benghazi, Derna, Sabha & Tobruk 230 V. [citation needed] Liechtenstein: C, J 230 V