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2. History of AC power plugs and sockets - Wikipedia

   en.wikipedia.org/wiki/History_of_AC_power_plugs...

   The report found that "the harmonisation of plug and socket outlet systems in Europe, by introducing changes in national wiring legislations (would have) important transitional periods (above 75 years)", and that the cost to "replace the old socket-outlets (and the corresponding plugs of the appliances being used)" was estimated at 100 billion ...

3. Mains electricity - Wikipedia

   en.wikipedia.org/wiki/Mains_electricity

   It is the form of electrical power that is delivered to homes and businesses through the electrical grid in many parts of the world. People use this electricity to power everyday items (such as domestic appliances, televisions and lamps) by plugging them into a wall outlet. The voltage and frequency of electric power differs between regions. In ...

4. Electrical contractor - Wikipedia

   en.wikipedia.org/wiki/Electrical_contractor

   An electrical contractor is a business person or firm that performs specialized construction work related to the design, installation, and maintenance of electrical systems. [1] An electrical contractor is different from an electrician ; an electrician is an individual tradesman and an electrical contractor is a business person or company that ...

5. Electrical engineering - Wikipedia

   en.wikipedia.org/wiki/Electrical_engineering

   Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism.

6. Sleek Socket Ultra-Thin Electrical Outlet Cover is a must-have

   www.aol.com/lifestyle/sleek-socket-amazon...

   Sleek Socket Ultra-Thin Outlet Cover The Sleek Socket is a handy three-outlet power strip that stays out of sight while leading into one inconspicuous cover. $24 at Amazon

7. 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 ...