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  2. Mains electricity - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity

    The utilization voltage available at an appliance may be below this range, due to voltage drops within the customer installation. As in the UK, 240 V is within the allowable limits and "240 volt" is a synonym for mains in Australian and British English.

  3. Low-voltage network - Wikipedia

    en.wikipedia.org/wiki/Low-voltage_network

    In Europe and most of the world 220–240 V is the dominant choice, while in North America 120 V is the standard. [5] ANSI standard C84.1 recommends a +5%, −2.5% tolerance for the voltage range at a service point. [6]

  4. Electric power distribution - Wikipedia

    en.wikipedia.org/wiki/Electric_power_distribution

    Most of the world uses 50 Hz 220 or 230 V single phase, or 400 V three-phase for residential and light industrial services. In this system, the primary distribution network supplies a few substations per area, and the 230 V / 400 V power from each substation is directly distributed to end users over a region of normally less than 1 km radius.

  5. Cost of electricity by source - Wikipedia

    en.wikipedia.org/wiki/Cost_of_electricity_by_source

    The levelized cost of electricity (LCOE) is a metric that attempts to compare the costs of different methods of electricity generation consistently. Though LCOE is often presented as the minimum constant price at which electricity must be sold to break even over the lifetime of the project, such a cost analysis requires assumptions about the value of various non-financial costs (environmental ...

  6. Electrical wiring - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring

    Electrical wiring is an electrical installation of cabling and associated ... temperature range, ... from the late 1960s to mid-1970s due to the rising cost of ...

  7. Electrical wiring in North America - Wikipedia

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

    In 240-volt applications not requiring a neutral conductor, the white wire may be used as the second hot conductor, but must be recolored with tape or by some other method. [ citation needed ] Four-wire flexible equipment connection cords have red as the fourth color; unlike older European practices, color-coding in flexible cords is the same ...

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  9. Mains electricity by country - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity_by_country

    220 V [16] 220 V 380 V 60 Hz [17] Before standardization, socket types varied: C (very old installations), I (for air conditioners), and combinations like A/C and A/B/C. British Virgin Islands: A, B 110 V 190 V 60 Hz Brunei: G 240 V 415 V 50 Hz Bulgaria: C, F 230 V 400 V 50 Hz Burkina Faso: C, E 220 V 380 V 50 Hz Burundi: C, E 220 V

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