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2. Convection heater - Wikipedia

   en.wikipedia.org/wiki/Convection_heater

   A convection heater, also known as a convector heater, is a type of heater that utilizes convection currents [1] to heat and circulate air. These currents move through the appliance and across its heating element, [ 2 ] using thermal conduction [ 3 ] to warm the air and decrease its density relative to colder air, causing it to rise.

3. Electric heating - Wikipedia

   en.wikipedia.org/wiki/Electric_heating

   Most modern electric heating devices use nichrome wire as the active element; the heating element, depicted on the right, uses nichrome wire supported by ceramic insulators. Alternatively, a heat pump can achieve around 150% – 600% efficiency for heating, or COP 1.5 - 6.0 Coefficient of performance , because it uses electric power only for ...

4. Mains electricity - Wikipedia

   en.wikipedia.org/wiki/Mains_electricity

   Mains electricity or utility power, grid power, domestic power, and wall power, or, in some parts of Canada, hydro, is a general-purpose alternating-current (AC) electric power supply. It is the form of electrical power that is delivered to homes and businesses through the electrical grid in many parts of the world.

5. Mains electricity by country - Wikipedia

   en.wikipedia.org/wiki/Mains_electricity_by_country

   Combined wall socket that supports types A and C are widely common among households in addition to type B for ground pin hole-added variant. Pitcairn Islands: I AS/NZS 3112 230 V 400 V 50 Hz Poland: C, E BN-88/3064 230 V 400 V 50 Hz Portugal: C, E, F NP 1260 230 V 400 V 50 Hz Type E is very rare, used only in very old installations.

6. Energy Prices Are High—And These Tankless Water Heaters Can ...

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7. Electric power distribution - Wikipedia

   en.wikipedia.org/wiki/Electric_power_distribution

   Most modern North American homes are wired to receive 240 volts from the transformer, and through the use of split-phase electrical power, can have both 120 volt receptacles and 240 volt receptacles. The 120 volts is typically used for lighting and most wall outlets. The 240 volt circuits are typically used for appliances requiring high watt ...